Does Exynos 5420 of Tab S support HMP and enable real 8 core? - Galaxy Tab S Q&A, Help & Troubleshooting

I just read some articles that 5420 may enable 8 core processor by soft update. Is it true?
Sent from my Galaxy Note 2

Alexsandra said:
I just read some articles that 5420 may enable 8 core processor by soft update. Is it true?
Sent from my Galaxy Note 2
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they're already enabled. next.

Jodova: if you don't understand the question then don't answer and display your ignorance. He's asking about enabling all right at the same time, not the big.Little configuration they're in now.
Hopefully Samsung will enable this soon.
Sent from my GT-N7000 using Tapatalk 2

I can't imagine needing all 8 cores at the same time. It seems it works great under heavy loads as is.
Forgive my ignorance but, would we really benefit? It seems to me it would absolutely destroy the battery.

Is there any octa-core device running all 8 cores out of the box?

LoVeRice said:
Is there any octa-core device running all 8 cores out of the box?
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I attached a image for your question. It looks like Galaxy S5 should support enable 8 core. I think Little Big is designed for beautiful scoring not for daily usage.:banghead: I prefer to choose the latest Snapdragon Chip
Sent from my Galaxy Note 2

Brenardo said:
I can't imagine needing all 8 cores at the same time. It seems it works great under heavy loads as is.
Forgive my ignorance but, would we really benefit? It seems to me it would absolutely destroy the battery.
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I expect my next Tab or tablet could have enough powerful processor which is able to make me forget my windows laptop. Battery killer? Samsung ROM is the best battery killer
Sent from my Galaxy Note 2

Zamboney said:
Jodova: if you don't understand the question then don't answer and display your ignorance. He's asking about enabling all right at the same time, not the big.Little configuration they're in now.
Hopefully Samsung will enable this soon.
Sent from my GT-N7000 using Tapatalk 2
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I am waiting for update or Sony Z2 tablet is my alternative option
Sent from my Galaxy Note 2

Exynos 5420 + HMP = Exynos 5422. So no, Exynos 5420 which is in the S doesn't (and won't) support HMP.

BarryH_GEG said:
Exynos 5420 + HMP = Exynos 5422. So no, Exynos 5420 which is in the S doesn't (and won't) support HMP.
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:banghead::banghead:
Sent from my Galaxy Note 2

Here's a slide from Qualcomm. The same holds true with Exynos where 85% of apps never leave the A7 cluster. In a few instances using A7 and A15 at the same time might provide needed extra power but how many apps or games exceed the power provided by four A15 chips?

Check out this:
http://www.slashgear.com/samsung-te...lementation-for-exynos-ahead-of-ces-29310253/
In this article. from Dec 2013 , more than 6 months before the tab S was released, a "Samsung Engineer" is quoted as saying:
'The ARM-based Exynos 5 Octa is currently used in a range of Samsung tablets and smartphones, but only one Exynos model, the 5420, is hardware-enabled for HMP. The 5420 is currently found in the Galaxy Note 3 and Galaxy Note 10.1. However, HMP is currently software-disabled because HMP would overheat such devices, a Samsung engineer stated.'

Samsung announced two new mobile SoCs at MWC today. The first is an update to the Exynos 5 Octa with the new Exynos 5422. The 5422 is a mild update to the 5420, which was found in some international variants of the Galaxy Note 3. The new SoC is still built on a 28nm process at Samsung, but enjoys much higher frequencies on both the Cortex A7 and A15 clusters. The two clusters can run their cores at up to 1.5GHz and 2.1GHz, respectively. The 5422 supports HMP (Heterogeneous Multi-Processing), and Samsung LSI tells us that unlike the 5420 we may actually see this one used with HMP enabled. HMP refers to the ability for the OS to use and schedule threads on all 8 cores at the same time, putting those threads with low performance requirements on the little cores and high performance threads on the big cores.
The GPU is still the same ARM Mali-T628 MP6 from the 5420, running at the same frequency. Samsung does expect the 5422 to ship with updated software (drivers perhaps?) that will improve GPU performance over the 5420.​http://www.anandtech.com/show/7811/samsungs-exynos-5422-the-ideal-biglittle-exynos-5-hexa-5260
The Exynos 5422 in the SGS5 is running at the same clock speed as the 5420 vs. the higher speeds it's capable of supporting. So it's highly likely 5420 and 5422 have the same heat envelope.
@AndreiLux is a leading kernel developer on XDA. You can review his comments on 5420 ever being able to support HMP in this thread. I'd take it as gospel. Getting HMP working where it's disabled is kind of like threads about reversing KNOX after it's tripped. Both are urban myths.
http://forum.xda-developers.com/showthread.php?t=2645875

It's not impossible for the 5420, it's been done and I've seen the Samsung patch (I linked the patch in another thread in our forum somewhere). As far as I'm aware, it just hasn't been done on Android. It may require many changes including Linux version, governor etc etc
I personally (just guessing) think that Samsung haven't bothered for our device because of heating issues and invoking thermal throttling at an earlier stage. For most applications, such power would not be needed.
Edit: OK, the patch I quoted was for 5410, but I've seen similar for 5420. ...
This is the thread in I'm referring to previous discussion.
http://forum.xda-developers.com/showthread.php?p=54700335
If Samsung invested the time money and resources, I'm quite sure that is not "impossible" to do it for our device. Due to the above stated reasons, I feel it's quite "improbable".

UpInTheAir said:
It's not impossible for the 5420, it's been done and I've seen the Samsung patch (I linked the patch in another thread in our forum somewhere). As far as I'm aware, it just hasn't been done on Android. It may require many changes including Linux version, governor etc etc
I personally (just guessing) think that Samsung haven't bothered for our device because of heating issues and invoking thermal throttling at an earlier stage. For most applications, such power would not be needed.
Edit: OK, the patch I quoted was for 5410, but I've seen similar for 5420. ...
This is the thread in I'm referring to previous discussion.
http://forum.xda-developers.com/showthread.php?p=54700335
If Samsung invested the time money and resources, I'm quite sure that is not "impossible" to do it for our device. Due to the above stated reasons, I feel it's quite "improbable".
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That patch in that previous discussion won't work, and neither will any for the 5420 due to various reasons I already explained in the past.

AndreiLux said:
That patch in that previous discussion won't work, and neither will any for the 5420 due to various reasons I already explained in the past.
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I never implied that that specific patch will work, just an example of what's "possible".
Here is a link on a working 5420 HMP in a Samsung demo:
https://www.google.co.th/url?sa=t&...wIwAA&usg=AFQjCNE0QItCM5_UdrpSajCtUSJ3Dt3WBw
As i maintain , possible, but improbable. ...

UpInTheAir said:
As i maintain , possible, but improbable. ...
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And I maintain that it is not possible.

AndreiLux said:
And I maintain that it is not possible.
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The video isn't shot by David Copperfield . ...... This is clear evidence, not hearsay. Not "impossible", because it's actually been done

UpInTheAir said:
The video isn't shot by David Copperfield . ...... This is clear evidence, not hearsay. Not "impossible", because it's actually been done
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Do you really want to argue with me? The CCI is disabled in hardware on the SoC and it's impossible in any kind of way to circumvent this via software. Beyond that we need changes to the bootloader to be able to properly manage booting of the clusters as the PM is protected/handled over TrustZone.
You will never see HMP work on any 5420 on any publicly available hardware. Period.

AndreiLux said:
Do you really want to argue with me? The CCI is disabled in hardware on the SoC and it's impossible in any kind of way to circumvent this via software. Beyond that we need changes to the bootloader to be able to properly manage booting of the clusters as the PM is protected/handled over TrustZone.
You will never see HMP work on any 5420 on any publicly available hardware. Period.
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You know that i wasnt arguing...... My point was that's is not impossible (video evidence !!), but improbable. Samsung have the resources to do just about anything they put there minds, money and motivation too. I also referred to generally 5420 , and not our specific device......
I agree on your last statement (edit: for existing public available hardware), The demo 5420 HMP clearly works.

Related

8 core update for exynos? !

So...., are we getting this 8 core update or what?
Doesn't seem like it , it's been confirmed that note 3 will not be getting the 8 core patch...since it's in essence a smaller version of the note 10.1 , well you do the math.
Can someone prove me wrong?? (please)
There are both thermal and battery life concerns. If Samsung thought this would up the anti for performance and not compromise stability or battery life, they would probably release it.
it would be nice to turn off the weaker cores then. i'd suspect them to be a cause of a lot of the lagginess and frame drops in video players. bs player has been the smoothest so far.
I believe there were a few articles floating around specifically saying that the CPU in the note 10.1 2014 edition could potentially get the true octacore mode. I believe there were also demo videos using this tablet in another thread.
ChrisNee1988 said:
I believe there were a few articles floating around specifically saying that the CPU in the note 10.1 2014 edition could potentially get the true octacore mode. I believe there were also demo videos using this tablet in another thread.
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Here's the thread from the N3 forum showing a tablet running HMP. It's clearly a test mule and not a N10.1-14. Here's the bottom line about adding HMP after the fact - there's nothing in it for Samsung. All the current products are marketed with a defined "high end" performance capability and are vaguely marketed as "four core" for S-800 and "1.9+1.3" for Octa. What's the benefit to Samsung of lighting up all eight cores to exceed today's performance and to take on the burden of the impact to battery life and potential thermal issues? All for something that only enthusiasts (us) know or care about.
The only clear benefit of implementing HMP is adding the four A7 cores on top of the four A15 cores to improve high-end performance which will end up tanking today's battery life. As implemented, 1-4 cores of each cluster can run within a given cluster and the gains of mixing and matching clusters (EG: 4 A7+1 A15 vs. 2/3 A15) is unproven and questionable.
So maybe future Octa chips will run HMP but, primarily because there's no benefit to Samsung of doing anything to existing devices, I don't see it being made retroactive.
http://forum.xda-developers.com/showthread.php?t=2556264
madsquabbles said:
frame drops in video players. bs player has been the smoothest so far.
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With what kind of videos do you experience frame drops? I use my tablet very often while using my cross-trainer to watch video and never experienced any frame drops. I tried MX Player, Dice Player and VPlayer and they are all smooth - actually no wonder, because they all use the HW acceleration for playback which can handle HD content without any problems.
aac and ac3 seem to cause the most problems SD and HD. I generally keep the nitrate around 2.5 Mb/s just for portability sake. container doesn't matter as avi, mkv, and mp4 all have the drops. I've used mx, BS, Archos, xbmc, and a few others and installed custom codecs if needed. heck even Netflix has a few frame drops. maybe I'm just too sensitive to it, but my s4, gn2, and gn8 have no problems. my old gn10.1 had no problems either. this 10.1 2014 is also the first Samsung device I've had that doesn't natively support ac3. hardware playback with alternative players do play the ac3 audio, but with dropped frames.
So does the note 2014 doesn't have HMP?
Does the new one 12.2 has it.
madsquabbles said:
aac and ac3 seem to cause the most problems SD and HD.
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That's strange, almost all my video files contain ac3 6-channels audio and playback is smooth without any frame drops.
DeBoX said:
Doesn't seem like it , it's been confirmed that note 3 will not be getting the 8 core patch...since it's in essence a smaller version of the note 10.1 , well you do the math.
Can someone prove me wrong?? (please)
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I believe there was a demo at CES with hmp running on the Note 10.1. I'm almost positive. Where was it confirmed the note 3 was not getting it? Just curious.
havekk said:
I believe there was a demo at CES with hmp running on the Note 10.1. I'm almost positive. Where was it confirmed the note 3 was not getting it? Just curious.
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If Samsung was going to add HMP to the current generation of Exynos they would have tied it to something big, like the launch of a new $750+ tablet. HMP was shown on a test tablet, not the N10.1-14. Idealists keep hoping but it's not likely to happen.
BarryH_GEG said:
If Samsung was going to add HMP to the current generation of Exynos they would have tied it to something big, like the launch of a new $750+ tablet. HMP was shown on a test tablet, not the N10.1-14. Idealists keep hoping but it's not likely to happen.
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Do you happen to know what SoC the test tablet was running? Everything I read said it was the 5420. Btw, I don't own a Note 10.1 - I still have a ****ty iPad 3. I haven't heard anything from "idealists" just going over what I have read from folks at the event. From what I have read, it seems as likely to happen on the Note 10.1 and Note Pro as it is to NOT happen. I have heard it won't happen on the Note 3; however, I assume that is due to size and heat issues. Shouldn't be the case with the lager tablets.
Only time will tell. You or I certainly don't know. I'm gonna wait to buy a new tablet and keep an eye on it though.
Thanks,
havekk said:
Do you happen to know what SoC the test tablet was running? Everything I read said it was the 5420. Btw, I don't own a Note 10.1 - I still have a ****ty iPad 3. I haven't heard anything from "idealists" just going over what I have read from folks at the event. From what I have read, it seems as likely to happen on the Note 10.1 and Note Pro as it is to NOT happen. I have heard it won't happen on the Note 3; however, I assume that is due to size and heat issues. Shouldn't be the case with the lager tablets.
Only time will tell. You or I certainly don't know. I'm gonna wait to buy a new tablet and keep an eye on it though.
Thanks,
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There's not one commercial/business reason for Samsung to update tablets already on the market beyond their published specs. Zip. Zero. Nada. And there's a reason not to. If an update to the SoC goes wrong and borks the tablet they have the liability of repairs. Enthusiasts (us) know what HMP is. The masses don't know, don't care, and are fine with what they're getting/got.
BarryH_GEG said:
There's not one commercial/business reason for Samsung to update tablets already on the market beyond their published specs. Zip. Zero. Nada. And there's a reason not to. If an update to the SoC goes wrong and borks the tablet they have the liability of repairs. Enthusiasts (us) know what HMP is. The masses don't know, don't care, and are fine with what they're getting/got.
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Ok. I can see you're really passionate about this not happening lol. So for the sake of not getting another response, I'll concede that you are absolutely definitely correct about this. It is not going to happen.
Thanks for you assistance on this matter.
havekk said:
Ok. I can see you're really passionate about this not happening lol. So for the sake of not getting another response, I'll concede that you are absolutely definitely correct about this. It is not going to happen.
Thanks for you assistance on this matter.
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The N10.1-14's battery life is "adequate" and the Exynos version takes forever to charge. The only benefit of HMP is adding the A7 cores on top of the A15 cores at max load. That's going to take a toll on battery life and increase the thermal load beyond what the device is designed for possibly impacting component life. Forgive me if I'm not enthused.
Ok, I'm out.
BarryH_GEG said:
The N10.1-14's battery life is "adequate" and the Exynos version takes forever to charge. The only benefit of HMP is adding the A7 cores on top of the A15 cores at max load. That's going to take a toll on battery life and increase the thermal load beyond what the device is designed for possibly impacting component life. Forgive me if I'm not enthused.
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That's interesting to know. All of the test I have read about prior had gains in battery life by using the cores much more efficiently. You posted a video describing this process in detail and how it helped battery life, then you post the exact opposite opinion?
Something else I find interesting is that you say implementing HMP would "increase the thermal load beyond what the device is designed for" Yet... we all know that HMP is hardware-enabled in the 5420 SoC. So couldn't it be said that the device was designed to use HMP? I think it could.. nay, it should lol.
Wait a sec! I get it!! I just saw that you have fought this battle before with Iba21 - You really seem to have something against this whole thing lol. From what I just read, Iba21 really pooped on your entire argument and you stopped responding.
Don't worry about responding as I'm getting out of this "discussion". It's clear you have an opinion as do I.. Only time will tell who's is more accurate.
havekk said:
That's interesting to know. All of the test I have read about prior had gains in battery life by using the cores much more efficiently. You posted a video describing this process in detail and how it helped battery life, then you post the exact opposite opinion?
Something else I find interesting is that you say implementing HMP would "increase the thermal load beyond what the device is designed for" Yet... we all know that HMP is hardware-enabled in the 5420 SoC. So couldn't it be said that the device was designed to use HMP? I think it could.. nay, it should lol.
Wait a sec! I get it!! I just saw that you have fought this battle before with Iba21 - You really seem to have something against this whole thing lol. From what I just read, Iba21 really pooped on your entire argument and you stopped responding.
Don't worry about responding as I'm getting out of this "discussion". It's clear you have an opinion as do I.. Only time will tell who's is more accurate.
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Saying inflammatory things and then posting "no need to reply" is passive aggressive. There are two possible benefits of HMP - 1) using combinations of A7 and A15 cores across clusters and 2) going beyond the current max of 4 A15 cores. Do you know if there's battery life to be saved by using 2 A7 cores and 1 A15 core as opposed to using 2 A15 cores? I don't but I'm guessing the advantage to be minimal. You don't have to be an engineer to understand that using cores in addition to the current max of 4 A15's is going to create more heat and draw more power.
Just a thought, but allowing HMP during periods of high load and having all 8 cores online all the time represent two different scenarios. If core OS functions could remain on an A7 and yield all 4 A15s to applications, you could see an improvement purely due to a reduction in OS interrupt servicing. The case for thermal dissipation and battery life represents an unknown as to how much of an impact it would really have. It would be highly dependent upon how heavily you are using the active cores. The penalty would be proportionate to how hard you're pushing it.
All that said, I tend to agree with BarryH_GEG. Samsung hasn't demonstrated a lot in the forward thinking department. They make capable tablets, but just don't have it together on a lot of fronts and definitely don't strive to optimize products in a way that delivers maximum performance. Their focus is primarily on gimmicks and visual features and hitting a point of "acceptable", not exceptional performance. I'm not bashing, I have owned numerous galaxy line products and will continue to do so until a viable active digitizer tablet surpasses the note line. It's just a business play on their part. You expend enough development resources to get a mainstream sale, no more.
The note 12.2 is a prime example. At the time of release, Samsung has no book cover available, poor planning. They didn't have Hancom Office in the preloaded image and it wasn't available until a day after release, also poor planning. The end result is a customer experience that isn't smooth and demonstrative of a company that gives significant consideration to first impressions or user experience.
I have had my Note 2014 (32GB) for two days and would not want to have both core sets running at the same time. The device can already get very warm in the SOC area and the battery drains just like my iPad 4 when playing 3D games- faster than I want it to. Games are smooth and ditto for apps, so not seeing an advantage of all eight, but see the two key disadvantages. Not running into any core hand-off issues some are reporting that can cause lag. Not yet anyway.
Added:
I use Nova for my launcher, since IMO much better than Samsung's. Based on performance, I see no reason for me to root the 2014. Very happy already, so see no need to rock the boat.

[Q] Help Overclocking SM-P600 ARM A15 cores: is it possible?

Ive gotten apps that can over clock the cores, but it's only the 4 SMALL cores which clock at 1.3 GHZ and can over clock into 1.9 GHZ but I don't need that since the Exynos 5 Octa has 4 OTHER cores that clock at 1.9GHZ. The Dolphin emulator doesn't use the 1.9GHZ cores. When I over clock there 1.3GHZ to 1.9GHZ while playing Super Smash Bros Melee, it runs just as good as the Note 3 does, which is 2.3GHZ SnapDragon. If I were to use AND over clock the 1.9GHZ cores, I may be able to run that and also other graphic intense games almost perfectly. Help please.
NerroEx said:
Ive gotten apps that can over clock the cores, but it's only the 4 SMALL cores which clock at 1.3 GHZ and can over clock into 1.9 GHZ but I don't need that since the Exynos 5 Octa has 4 OTHER cores that clock at 1.9GHZ. The Dolphin emulator doesn't use the 1.9GHZ cores. When I over clock there 1.3GHZ to 1.9GHZ while playing Super Smash Bros Melee, it runs just as good as the Note 3 does, which is 2.3GHZ SnapDragon. If I were to use AND over clock the 1.9GHZ cores, I may be able to run that and also other graphic intense games almost perfectly. Help please.
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Overclocking was attempted with the Bindroid Kernel but it would not stick. As for it running better on the Note 3, you are pushing a lot fewer pixels on the Note 3 (1200x1980) versus Note 2014 (2560x1600)
nrage23 said:
Overclocking was attempted with the Bindroid Kernel but it would not stick. As for it running better on the Note 3, you are pushing a lot fewer pixels on the Note 3 (1200x1980) versus Note 2014 (2560x1600)
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what's a bindroid kernel lol and well then shouldn't that mean that it should be harder to run on the tablet??? and also if I were to over clock the bigger cores and over clock the gpu, which so far the apps that over clock gpu's are only for Snapdargon, then it would run better than any device on the market.
Also, I found this: "The core switching is controlled by a firmware layer that sits in between the software and the chip itself. Operating systems can be tweaked to better support big.LITTLE's particular arrangement of cores, but any OS that supports power state switching for CPUs (any mainstream operating system from the last decade or so) can take advantage of big.LITTLE without any additional changes."
Source:http://www.wired.co.uk/news/archive/2013-03/19/exynos-5-octa
Though this is for the galaxy s4, it should be the architecture as the note 10.1 2014. But is it possible to tweak that firmware or even MANUALLY activate the 4 stronger cores at will???
NerroEx said:
what's a bindroid kernel lol and well then shouldn't that mean that it should be harder to run on the tablet??? and also if I were to over clock the bigger cores and over clock the gpu, which so far the apps that over clock gpu's are only for Snapdargon, then it would run better than any device on the market.
Also, I found this: "The core switching is controlled by a firmware layer that sits in between the software and the chip itself. Operating systems can be tweaked to better support big.LITTLE's particular arrangement of cores, but any OS that supports power state switching for CPUs (any mainstream operating system from the last decade or so) can take advantage of big.LITTLE without any additional changes."
Source:http://www.wired.co.uk/news/archive/2013-03/19/exynos-5-octa
Though this is for the galaxy s4, it should be the architecture as the note 10.1 2014. But is it possible to tweak that firmware or even MANUALLY activate the 4 stronger cores at will???
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You may want to do some more research before you do anything. Most aspects of the CPU or GPU are handled by the kernel. The only way you can overclock any device is with a custom kernel that has the higher frequencies in the tables. DutchDanny tried to get overclocking working but it did not work. You can however underclock most any device since it has all the lower frequencies listed. If we wanted to enable Big Little on the Note 2014 we would need Samsung to release source code enabling it. Which I am sure they will not do. Again the Big Little is kernel dependent. The Android OS is not the problem Samsung is the problem. Do a search there is a very good thread about the 8 core thing.
nrage23 said:
You may want to do some more research before you do anything. Most aspects of the CPU or GPU are handled by the kernel. The only way you can overclock any device is with a custom kernel that has the higher frequencies in the tables. DutchDanny tried to get overclocking working but it did not work. You can however underclock most any device since it has all the lower frequencies listed. If we wanted to enable Big Little on the Note 2014 we would need Samsung to release source code enabling it. Which I am sure they will not do. Again the Big Little is kernel dependent. The Android OS is not the problem Samsung is the problem. Do a search there is a very good thread about the 8 core thing.
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Wait wuuut I heard there was going to be an update for the Exynos 5 octa for Big.Little Architecture ???
NerroEx said:
Wait wuuut I heard there was going to be an update for the Exynos 5 octa for Big.Little Architecture ???
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The Exynos 5 is fully capable but Samsung has never said they would update the Note 2014 to enable it.
Sent from my HTC6600LVW using XDA Premium HD app
nrage23 said:
The Exynos 5 is fully capable but Samsung has never said they would update the Note 2014 to enable it.
Sent from my HTC6600LVW using XDA Premium HD app
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Actually I heard either in Q4 or Q3 they were going to release an update
NerroEx said:
Actually I heard either in Q4 or Q3 they were going to release an update
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I got the Note 2014 the day it came out and I check all kinds of news/forums everyday. I have seen nothing where they stated they would update any current devices with big.LITTLE. They have stated by the end of the year they would release new devices with big.LITTLE implemented. I would guess the first ones would be the 6 core midrange processor due to heat and power usage. You can get a lot more information from this thread in the main section.
http://forum.xda-developers.com/showthread.php?t=2645875

Tab pro or tab s

Hi. I have purchased 8.4" tab pro. Love it. It has good natural screen and is fast. But then I saw online the tab s. Is the screen worth the extra money and is the battery life much better? I am also concerned of the small bezels. Where should I hold it without touching the screen
In my opinion (which I'm quite fond of) the Tab S is worth the extra money.
If I already had a Tab Pro 8.4 that would be hard to say.
The bezels are slightly (mm's) slimmer on the Tab S from Tab Pro. If you were fine with the Tab Pro you shouldn't be a lot worse off with the Tab S.
I just returned my Tab Pro and picked up the Tab S. I recommend the 10.5 model just because you can read websites in portrait easier.
I was worried the amoled screen would be too much but it's great and I love the blacker text.
mitchellvii said:
I just returned my Tab Pro and picked up the Tab S. I recommend the 10.5 model just because you can read websites in portrait easier.
I was worried the amoled screen would be too much but it's great and I love the blacker text.
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So did I. Went from 8.4 pro to the 10.5 S. So far I am very happy that I did.
The Tab Pro 8.4" is a quadcore, whereas the Tab S 8.4 is a octacore. So Tab S in this case would be far superior, plus the ultra power saving mode, finger print lock, and Super AMOLED screen is way better too on the "S" series for the 8.4" Tab comparisons.
Sent from my SM-P900 using xda premium
Debatable which processor is faster. Really depends on what you're doing with it. I had a chance to see them both side by side and the SAMOLED screen on the Tab S looked better to my eye, but again that's subjective. IMHO, it comes down to price. They were running the Tab Pro 8.4 for $249 last week. At that price, the Tab S just isn't worth it. That said, I walked out today with a Tab S that was a return from a customer who got the wrong color. Box was unopened, but the guy gave me a decent discount because there was a big sticker that had been ripped off the side of it. Box looked pretty rough, but the contents were untouched.
Sent from my SAMSUNG-SGH-I337 using XDA Free mobile app
snideguy19 said:
The Tab Pro 8.4" is a quadcore, whereas the Tab S 8.4 is a octacore. So Tab S in this case would be far superior, plus the ultra power saving mode, finger print lock, and Super AMOLED screen is way better too on the "S" series for the 8.4" Tab comparisons.
Sent from my SM-P900 using xda premium
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Click to collapse
It's not superior I wish they'd put the snap 801 instead of the exynos chip as only four cores can work at a time. Unless they can find a way to unlock. Plus it may take longer to root or get custom roms. I had the tab pro and a root was out in a couple of days.
My one knock on these super amoled screens
Reds tend to look a bit orangish.
will6316 said:
It's not superior I wish they'd put the snap 801 instead of the exynos chip as only four cores can work at a time. Unless they can find a way to unlock. Plus it may take longer to root or get custom roms. I had the tab pro and a root was out in a couple of days.
Click to expand...
Click to collapse
Wrong
All 8 cores can work simultaneously.
xRevilatioNx said:
Wrong
All 8 cores can work simultaneously.
Click to expand...
Click to collapse
I read the anandtech review it sounds there like it's only 4 at a time though the wording is confusing...
http://www.anandtech.com/show/8197/samsung-galaxy-tab-s-review-105-84inch/4
The WiFi only variants of the Galaxy Tab S all feature Samsung’s own Exynos 5 Octa (5420). Internally we’re dealing with four ARM Cortex A15s and four ARM Cortex A7s in a big.LITTLE configuration, with a maximum of four cores of the same type being active at any given moment. The Cortex A7 cluster can run at up to 1.3GHz while the Cortex A15 cluster maxes out at 1.9GHz.
cranch said:
I read the anandtech review it sounds there like it's only 4 at a time though the wording is confusing...
http://www.anandtech.com/show/8197/samsung-galaxy-tab-s-review-105-84inch/4
The WiFi only variants of the Galaxy Tab S all feature Samsung’s own Exynos 5 Octa (5420). Internally we’re dealing with four ARM Cortex A15s and four ARM Cortex A7s in a big.LITTLE configuration, with a maximum of four cores of the same type being active at any given moment. The Cortex A7 cluster can run at up to 1.3GHz while the Cortex A15 cluster maxes out at 1.9GHz.
Click to expand...
Click to collapse
it won't be the first time anandtech made a major error. I've caught a few gaffes over the years. Since then, I don't trust their reviews. I treat it like going to a doctor. You get a diagnosis but always go to several other physicians for a more informed opinion.
Here's some videos..
"Samsung Exynos 5 Octa (big.LITTLE technology
Heterogeneous Multi-Processing (HMP) Explained
xRevilatioNx said:
it won't be the first time anandtech made a major error. I've caught a few gaffes over the years. Since then, I don't trust their reviews. I treat it like going to a doctor. You get a diagnosis but always go to several other physicians for a more informed opinion.
Click to expand...
Click to collapse
I was under the assumption that the Exynos 5420 didn't have HMP enabled. Samsung released a vague statement in the past saying that they could update the kernel on devices running the 5420 so that HMP works, but I'm not sure if anything came from it. Of course, I could be totally wrong and Samsung got HMP working on these devices.
According to an Anandtech article (I know, sorry) on the newer 5422 processor back in February:
"The 5422 supports HMP (Heterogeneous Multi-Processing), and Samsung LSI tells us that unlike the 5420 we may actually see this one used with HMP enabled. HMP refers to the ability for the OS to use and schedule threads on all 8 cores at the same time, putting those threads with low performance requirements on the little cores and high performance threads on the big cores."
"Assume nothing and Check Everything "
It's enabled on their flagship device..
xRevilatioNx said:
"Assume nothing and Check Everything "
It's enabled on their flagship device..
Click to expand...
Click to collapse
Any links to back that up? Everything I read says no 5420 has HMP turned on and that the Tab S only uses one set or the other depending on performance needs, never both together.
xRevilatioNx said:
"Assume nothing and Check Everything "
It's enabled on their flagship device..
Click to expand...
Click to collapse
Hmm, you're right. I really should've checked more sources. One minute Google research doesn't get you really far. In that same article Anandtech's chart lists the max number of active cores for the 5420 as: 4 (?) .
Do what I did. Speak to technical support at Samsung.
I'll go one step further. What we do know is that the 5420 in the Tab S is scoring 35,000+ in Antutu...
It seems that our Note 2014 versions usually score about 32,000+, So that lead me to suspect that the newer Galaxy Tab S 5420 was HMP enabled due to the higher Antutu scores.*
And again, had confirmed when I spoke with Samsung directly.
xRevilatioNx said:
Do what I did. Speak to technical support at Samsung.
I'll go one step further. What we do know is that the 5420 in the Tab S is scoring 35,000+ in Antutu...
It seems that our Note 2014 versions usually score about 32,000+, So that lead me to suspect that the newer Galaxy Tab S 5420 was HMP enabled due to the higher Antutu scores.*
And again, had confirmed when I spoke with Samsung directly.
Click to expand...
Click to collapse
My note pro 8.4 with snapdragon 800 scores 35000 as well, I wouldn't call that proof on HMP. When you read the specs for the 5422 they state first chipset with HMP. Color me dubious that it's been turned on for the 5420. I hope I'm wrong
You're comparing apples to oranges. We have an AMOLED screen using the Exynos Octa 5. The Snapdragon on an inferiorly smaller screen (without AMOLED) will naturally get better CPU/GPU scores on Antutu
xRevilatioNx said:
You're comparing apples to oranges. We have an AMOLED screen using the Exynos Octa 5. The Snapdragon on an inferiorly smaller screen (without AMOLED) will naturally get better CPU/GPU scores on Antutu
Click to expand...
Click to collapse
The Pro 8.4 has the same resolution8.4 1600 x 2560 display) minus the amoled, and 1gb less RAM, same Android version.
I do agree any Antutu score is meaningless to prove HMP or not.
gottahavit said:
The Pro 8.4 has the same resolution8.4 1600 x 2560 display) minus the amoled, and 1gb less RAM, same Android version.
I do agree any Antutu score is meaningless to prove HMP or not.
Click to expand...
Click to collapse
You left out the smaller screen. Apples and Oranges.

Why octa-core?

The galaxy tab s products that are available to me have an octa-core processor, with the high speed cores being 1.9ghz. I can't really understand why Samsung chose to use that instead of a 2.3ghz quad-core like in the tab pro.
See Wikipedia for an explanation of the concept: http://en.m.wikipedia.org/wiki/ARM_...multi-processing_.28global_task_scheduling.29
Because the Exynos 5 Octa-core is the one processor that Samsung has to be able to compete with Snapdragon 800, and is cheaper to implement since it's their own processor. I don't buy the Octa-core hype, I'd be happier with the Snapdragon 800 honestly like on the Tab PRO 8.4.
The question is:
Does TAB S use the 8 cores at the same time?
It seams it does NOT, little cores are only used when low power is required..
So performance wise, this CPU is slower than SD 800
ssuper2k said:
The question is:
Does TAB S use the 8 cores at the same time?
It seams it does NOT, little cores are only used when low power is required..
So performance wise, this CPU is slower than SD 800
Click to expand...
Click to collapse
And yet I am getting 35,300 on Antutu using Shaheers t800 rom which is higher than any other current tablet or phone. (Shaheer's rom should go out of beta today - don't flash until final has been posted).
The Tab Pro 8.4 Antutu is 32,806.
I CANT PLAY NOVA 3 with exynos !
AND GAMING IS NOT SO SMOOTH ! STILL A BIT LAGGY
I can see the argument that you don't always need full power, thus the four slow cores, but since all cores can't run at once, it seems a cheat to have 1.9ghz as the top speed for the faster four cores. Since, or at least I assume, cores step up and down as needed, it seems to me a snapdragon 800 or higher at 2.3ghz or higher would have been just fine. I mean, if you are going to put in 3gb of RAM, then you should put in a great cpu also and not pretend less (1.9ghz) is a better contribution to what is supposed to be a premium tablet.
And yet I don't think samsung is doing enough to utilizing this hardware capability. In theory it should run at least 4x faster and 6x more effecient then the snap dragon and apple current A8 chip. It has failed to outshine the competitors because samsung software department sucks. Samsung hardware is still great though.
sku|| said:
I CANT PLAY NOVA 3 with exynos !
AND GAMING IS NOT SO SMOOTH ! STILL A BIT LAGGY
Click to expand...
Click to collapse
Blame the developer for not making it compatible. Tegra powered Htc one x is incompatible too so not sure that is exynos issue..
i wish my t805 had Full HD screen resolution :cyclops:
Funny. Was just browsing the web a bit on my i5 ultrabook and it occurred to me that the browser on my Tab S is actually faster. If gaming is your primary thing, I'd buy the Nvidia Shield, not the Tab S. This tablet is designed for eye candy media consumption (internet and video) not for gaming enthusiasts. Try running your PC video card at 2560 x 1600 on ultra and see what you get.
i had heard from a Samsung rep i actually enjoy talking to that Sammy had just figured the all cores at once and we should see updates that turn that feature on. when this will happen who knows. i also did not ask him for a link and now cant find that info on the web so when i see him again soon i will get more info.
i would assume (insert you know what that means) that when/if this happens the full power of this setup would greatly improve?
anyway i have had my Tab S running snappy for me and no complaints at this time
You cannot compare the clock speeds from two different processors. For instance, you can't compare the 1.9GHz quad-core of the Exynos to the 2.3GHz quad-core of the Snapdragon 800. This doesn't mean anything. If you compare the clock speed of two Snapdragon chips, that's ok, or if you compare the clock speed of two Exynos chips, then that's ok too. Comparing the clock speed of an Intel chip against the clock speed of an AMD chip, is the same as comparing the clock speed of an Exynos chip to the clock speed of a Snapdragon chip.
The Exynos chip in this tablet has been shown to compete very well/close with the Snapdragon on every level except GPU. The Mali GPU in this chip just doesn't match the Adreno GPU from the Snapdragon. However, the RAM is faster in the Exynos than the Snapdragon.
That said, I am a fan of the Snapdragon chip, of course. I was holding off to see if the LTE variant of this tablet would have the Snapdragon 800, but instead they shipped with an Intel LTE modem. Besides apps/games not being optimized for Exynos, I am fairly satisfied with my purchase. I'm just anxious to get CyanogenMod(or any other AOSP ROM installed on it).
fletch33 said:
i had heard from a Samsung rep i actually enjoy talking to that Sammy had just figured the all cores at once and we should see updates that turn that feature on. when this will happen who knows. i also did not ask him for a link and now cant find that info on the web so when i see him again soon i will get more info.
i would assume (insert you know what that means) that when/if this happens the full power of this setup would greatly improve?
anyway i have had my Tab S running snappy for me and no complaints at this time
Click to expand...
Click to collapse
Could also mean increased battery consumption,don't know. Overall I am satisfied with this Tab including battery life.
There are 3 different performace results:
a) what Exynos 520 does achieve in practice now, measured bei some benchmarks and real world performance (<= Snapdragon 800)
b) what it could do theoretically - but will never happen due to driver and scheduler etc issues (>> Snapdragon)
c) what it will do some day in near future on an optimized ROM (somewhere in between?)
Fortunately the Exynos 5420 does support all 8 cores in parallel, see here:
http://www.notebookcheck.net/Samsung-Exynos-5420-Octa-SoC.103633.0.html
pibach said:
There are 3 different performace results:
a) what Exynos 520 does achieve in practice now, measured bei some benchmarks and real world performance (<= Snapdragon 800)
b) what it could do theoretically - but will never happen due to driver and scheduler etc issues (>> Snapdragon)
c) what it will do some day in near future on an optimized ROM (somewhere in between?)
Fortunately the Exynos 5420 does support all 8 cores in parallel, see here:
http://www.notebookcheck.net/Samsung-Exynos-5420-Octa-SoC.103633.0.html
Click to expand...
Click to collapse
Wish I knew how. Probably a linux thing. ...
If it is possible to implement in today's existing source, I'm sure @AndreiLux would know about it ?
UpInTheAir said:
Wish I knew how. Probably a linux thing. ...
If it is possible to implement in today's existing source, I'm sure @AndreiLux would know about it ?
Click to expand...
Click to collapse
It's impossible.
AndreiLux said:
It's impossible.
Click to expand...
Click to collapse
What and why?
pibach said:
What and why?
Click to expand...
Click to collapse
http://www.androidauthority.com/sam...ta-can-use-eight-cores-simultaneously-267316/
I've found a few articles saying it should support it, then a couple Deva saying they had to goto the 5422 for a working implementation of HMP.
Here is a post from odroid
http://forum.odroid.com/viewtopic.php?f=97&t=5651
That's weird. The (newer) 5422 supports HMP but not 3gb RAM.

Snapdragon 855 vs Exynos 9820 Benchmarks

There is a lot of debate over the performance between these 2 versions. So put 'em up. Any test or source you feel is relevant to your stance. I'll supply my 855 scores for a few. Please keep it friendly.
My OP didn't post the screenshots correctly.
Xda just takes a while to actually show attached images. Your first post was fine.
In synthetic tests the Exy should be faster, and rightfully so. It occupies more space than the SD855, so I suspect Samsung scaled perf back to match the 855. Now, the SD will probably run better than Exy in emus and native games.
Ace42 said:
Xda just takes a while to actually show attached images. Your first post was fine.
In synthetic tests the Exy should be faster, and rightfully so. It occupies more space than the SD855, so I suspect Samsung scaled perf back to match the 855. Now, the SD will probably run better than Exy in emus and native games.
Click to expand...
Click to collapse
Unless Exynos broke the mold this year, gaming is smoother on SD. If an Exynos user could start posting their results, that'd be awesome for the benchmark debate.
Are you saying that the 9820 is physically larger? If so, Qualcomm did implement a 7nm process to combat the difference.
Can you check what camera sensors you have?
I downloaded AIDA64 and it says I have ISOCELL in my S10+ Exynos version.
I want to know if Samsung is placing Sony IMX sensors on the Snapdragon variant.
I have used Antutu and Geekbench for the scores. Did not do anything else basically. Didn't know if I should have messed with some setting or had to restart for a better score. If I have to do the tests again, please let me know.
[/IMG]
---------- Post added at 09:33 PM ---------- Previous post was at 09:22 PM ----------
I have used Antutu and Geekbench for the scores. Did not do anything else basically. Didn't know if I should have messed with some setting or had to restart for a better score. If I have to do the tests again, please let me know.
This mine with exynos View attachment 4723816
Gesendet von meinem SM-G975F mit Tapatalk
CPU, Compute, GFX Bench (Exynos)
I think I'm beating Snapdragon on a few of 3D ones too
Corv0 said:
CPU, Compute, GFX Bench
I think I'm beating Snapdragon on a few of 3D ones
Click to expand...
Click to collapse
@sireniankyle Run this in Chrome and show me what you get, I'm curious about 3D Web performance that doesn't rely on third party apps or their optimizations.
twelvematic said:
Can you check what camera sensors you have?
I downloaded AIDA64 and it says I have ISOCELL in my S10+ Exynos version.
I want to know if Samsung is placing Sony IMX sensors on the Snapdragon variant.
Click to expand...
Click to collapse
I hope that's what you needed.
sireniankyle said:
I hope that's what you needed.
Click to expand...
Click to collapse
Yes, thank you! Now I know why I'm getting worse pictures and videos than my Note 9...
Definitely US variant has the best hardware. Snapdragon is better than Exynos and Sony IMX camera sensors are better than ISOCELL.
I'm angry. I'll try to sell my G975F and get a G975U1 :/
twelvematic said:
Yes, thank you! Now I know why I'm getting worse pictures and videos than my Note 9...
Definitely US variant has the best hardware. Snapdragon is better than Exynos and Sony IMX camera sensors are better than ISOCELL.
I'm angry. I'll try to sell my G975F and get a G975U1 :/
Click to expand...
Click to collapse
Sorry. I wish everyone got the right variant for them the first time.
sireniankyle said:
Unless Exynos broke the mold this year, gaming is smoother on SD. If an Exynos user could start posting their results, that'd be awesome for the benchmark debate.
Are you saying that the 9820 is physically larger? If so, Qualcomm did implement a 7nm process to combat the difference.
Click to expand...
Click to collapse
Yes, the 9820 is larger than the SD855 and 9810. When it comes to games it's hard to gauge the Adreno, since PUBG already runs at 60FPS on the 835, or with HDR on. That means it'll be a while before the 845 starts to choke.
https://www.anandtech.com/show/14069/chiprebel-releases-exynos-9820-die-shot
twelvematic said:
Yes, thank you! Now I know why I'm getting worse pictures and videos than my Note 9...
Definitely US variant has the best hardware. Snapdragon is better than Exynos and Sony IMX camera sensors are better than ISOCELL.
I'm angry. I'll try to sell my G975F and get a G975U1 :/
Click to expand...
Click to collapse
Nah mate you're going too far in misunderstanding about this whole tech.
ISOCELL is also not a brand but a technology name for sensor produced by Samsung, Sony's counterpart is still using barely improved version of BSI, an older technology.
In theory, ISOCELL is superior to pretty much everything else, the only way for it to lose is to have inferior processing, the Pixel 3 makes good use of its IMX363 even if it technically has an older system.
Regarding ISOCELL vs BSI on the same device and same software processing will always come with better result through the ISOCELL. DXomark's review of the S10 used the International version with a 4.32mm ISOCELL, and it is the first in its class.
Also, the IMX sensor in @sireniankyle's screenshot is the selfie front facing camera, you can see the other rear facing camera being an ISOCELL (ultra-wide 1.80mm) as well.
I have attached my Exynos AIDA sensor screens and one of DXOmark's benchmarking sample with the sensor data recorded.
To keep it separated from my previous post:
@twelvematic You shouldn't sell your G975F, we have:
-30%+ more single core performance
-equal or in some cases superior GPU performance (check my other post on the thread)
-unlockable bootloader at any time
-updated proprietary sensors that Samsung has full control on
-proprietary SoC that Samsung has full control on, most OEMS have no control over whether or not Qualcomm will continue supporting their platform with libs after 2 years, that's why most Qualcomm devices started having dead or crippled AOSP support in the last years, it turned from being community friendly into becoming just another American toxic corporation, it deserves to die like one, their patenting game is also dishonest and illegal in many cases.
-potentially superior battery life, Snapdragon users aren't even getting close to my 13.5h SoT record, their battery life drama percentage seems to be higher than ours (battery optimisation guide is coming soon btw)
If anything isn't performing in a satisfying way I am fully assured it can be solved with software updates. This affects all new technologies, and Qualcomm is not the new boy here.
Samsung has the means, they have the experience and media has already applied pressure on this Exynos vs Snapdragon issue for quite some time.
I was very negative about Exynos being potentially lame while waiting for my European pre-order, I do not worry anymore.
sireniankyle said:
I hope that's what you needed.
Click to expand...
Click to collapse
Not sony. Screenshot on exynos
GPU Performance
Corv0 said:
To keep it separated from my previous post:
@twelvematic You shouldn't sell your G975F, we have:
-30%+ more single core performance
-equal or in some cases superior GPU performance (check my other post on the thread)
-unlockable bootloader at any time
-updated proprietary sensors that Samsung has full control on
-proprietary SoC that Samsung has full control on, most OEMS have no control over whether or not Qualcomm will continue supporting their platform with libs after 2 years, that's why most Qualcomm devices started having dead or crippled AOSP support in the last years, it turned from being community friendly into becoming just another American toxic corporation, it deserves to die like one, their patenting game is also dishonest and illegal in many cases.
-potentially superior battery life, Snapdragon users aren't even getting close to my 13.5h SoT record, their battery life drama percentage seems to be higher than ours (battery optimisation guide is coming soon btw)
If anything isn't performing in a satisfying way I am fully assured it can be solved with software updates. This affects all new technologies, and Qualcomm is not the new boy here.
Samsung has the means, they have the experience and media has already applied pressure on this Exynos vs Snapdragon issue for quite some time.
I was very negative about Exynos being potentially lame while waiting for my European pre-order, I do not worry anymore.
Click to expand...
Click to collapse
GPU equal or superior? Lol. It's not even better than the Adreno on my Note 9. Not only in the benchmarks... It is clearly noticeable in PUBG Mobile. Mali GPU lags.
twelvematic said:
GPU equal or superior? Lol. It's not even better than the Adreno on my Note 9. Not only in the benchmarks... It is clearly noticeable in PUBG Mobile. Mali GPU lags.
Click to expand...
Click to collapse
Geekbench GPU comparison
twelvematic said:
Geekbench GPU comparison
Click to expand...
Click to collapse
Renderscript is very unrelated to 3D performance, and it's also extremely dependant on kernel optimisation.
Why don't you run GFXbench on the Note? You will see what I'm talking about.
Samsung should improve their kernel optimisation game, the silicon is great, they're just lazy, at least my battery is insanely good and no Snapdragon is minimally getting close. That alone is worth more than any loss in benchmarks.
I had both S10+ Exynos 9820 and Snapdragon 855 for a night before selling the Exynos model. Here are some tests which you can access from my google drive folder.
Tests:
- Speedtest
- Antutu
- AiTutu (AI performance using NPU)
- Geekbench
- 3DMark
- Aida64 (specs)
https://drive.google.com/folderview?id=1givIr8Vvzp2TqTUjxVYbEeIKNX_WNv51

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