Some weeks ago @Quarx told me that he tried to overclock his MotoG. At a first look it works. The system is stable and cpuinfo apps show 1.9GHZ.
BUT: there isn't any performance change. Then I checked it on my device(Xiaomi Mi2) - exactly the same result.
I watched a video about Nexus4 overclock: https://www.youtube.com/watch?v=96hsPe-JH2M
As you can see there isn't any change, too(the minor differences are just random).
Then Quarx found a very interesting commit in MotoG's kernel log:
https://github.com/Quarx2k/kernel-moto-g/commit/ed82c3f26ec4a7ab39a436647643bdaf71dcb67a
The message tells us, that QCOM devices normally are "screened" which basically means, that if your max freq is 1.2GHZ, it doesn't matter what you change in the kernel source. it will always be 1.2GHZ even if it shows 100GHZ because the SoC is limiting that.
There are some older SoC's with adreno 2xx which seem to be overclockable without any problems.
But all new SoCs seem to be screened which prevents overclocking.
Some more tests of other devices and SoC's would be helpful.
I'd recommend you get a buttload of single-thread Linpack benchmarks at different frequencies and do some statistical analysis. Maybe make a Google Form where you can input Device, Frequency, and MFLOPS
Linpack because it's exclusively CPU, doesn't vary much between devices of the same model, and scales nicely with frequency.
scy1192 said:
I'd recommend you get a buttload of single-thread Linpack benchmarks at different frequencies and do some statistical analysis. Maybe make a Google Form where you can input Device, Frequency, and MFLOPS
Linpack because it's exclusively CPU, doesn't vary much between devices of the same model, and scales nicely with frequency.
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I think Linpack isn't reliable enough because it's completed too fast. For me it takes 1-2s to complete and the result variate's very much.
Sth like Antutu(only the CPU score) with performance governor and maybe even on a clean install would be better.
m11kkaa said:
I think Linpack isn't reliable enough because it's completed too fast. For me it takes 1-2s to complete and the result variate's very much.
Sth like Antutu(only the CPU score) with performance governor and maybe even on a clean install would be better.
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So how we can really test it? test in game to see if FPS get more high? I really dont believe that is just a placebo effect, in my kernel with 1.5Ghz I really feel the speed and will test when i finish the OC of 1.8Ghz.
BryanByteZ said:
So how we can really test it? test in game to see if FPS get more high? I really dont believe that is just a placebo effect, in my kernel with 1.5Ghz I really feel the speed and will test when i finish the OC of 1.8Ghz.
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well I only said that linpack looks unreliable. Antutu or other cpu intensive benchmarks should work just fine. Just ignore gpu benchmarks, because the gpu is definitely overclockable.
Related
Hi there, is it possible to overclock GPU?
i guess on most devices overclocking DOES overclock cpu and gpu at the same time
elgubbo said:
i guess on most devices overclocking DOES overclock cpu and gpu at the same time
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i don't think so bcs they are different hardware parts and when you overclock cpu it is sth about cpufrec but yeah when you overclock cpu it effects graphics too bcs it makes processes faster ...( i just think like that bcs of being a linux user open source foreveeeeeeeeeer )
If we could overclock the gpu on the android then the android would take over the world
kifno said:
If we could overclock the gpu on the android then the android would take over the world
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android has already became a legend by being the first os in USA(Apple's IOS is losing users. )
So it is still impossible, right?
kanek06 said:
So it is still impossible, right?
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i think it is possible ( when i think that they are like little computers) but i dunno how to do it.
to start, youd probably want to dissect the software driver and see what it offers.
Well, when we will able to overclock GPU - we should not buy new and new devices, because our present devices are old. But how about temperature? Will battery get hot like in overclocking CPU?
well, from what i understand the gpu for most devices shares space with the cpu on dye and that there is a divider of sorts that keeps the gpu speed a percentage of the cpu.. and since cpus can oc better then gpus, the whole reason we can oc is due to the fact that devs have figured out how to uncouple the clock increase of the cpu from the gpu, otherwise the gpus clock would limit the cpu.. now overclocking itself doesnt increase heat and most of the time (depending on what governor is used) it doesnt always run at full clock so theres not a high constant current drain causing the battery to get hot (unless you run an intensive app continually) also, you wont see the cpu overheat as long as the voltage stays stock, but increasing cpu voltage is how you will get past the th max (thermal maximum)
now if you could adjust that divider you could oc the gpu..
Hey there,
I've read some threads about the dangers of overclocking an Android-device in general. I'm aware of these dangers.
But in my feeling overclocking the sensation is a little different.
Most custom roms set CPU-speed to 1500MHz each core, which is the native clock of the chipset (or am I'm wrong?). No problem so far.
But with tweaking the CPU often the GPU is overclocked, too.
Now the point: What are the dangers of overclocking the GPU?
Does it make sense to overclock just the CPU without the GPU? Is it possible?
What are your experiences with overclocking (e.g. with IsertCoin or RevolutionHD) the GPU?
What you have to remeber with regard to overclocking is that your not alone in doing it when you use one of the custom roms.
Many thousands of ppl are running overclocked handsets and the first things you see happening from overclocking to far is your handset not booting up or locking up well before you would do any physical damage to the handset i would say.
I have run my sensation at 1800 cpu speed and it started ok but locked up when doing one of the benchmark tools , i rebooted and reduced the speed a little but all running fine with no concerns with regard to overheating
So there is a hardware protection to prevent serious damage?
I dont know enough about the handset to say if there is or not i suspect there will be something , but have you ever tried to overclock a graphics card on a pc you get so far and it wont display or something like that so you reduce it.
Heat with any electronic component is i problem and overclocking something increases that heat, but when you get to a certain point your phone will lock freeze reboot etc usually before any damage is done.
If you have any concern about destroying your phone by overclocking the simple answere is that you dont overclock it .
Diydude said:
[...]
If you have any concern about destroying your phone by overclocking the simple answere is that you dont overclock it .
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Yes you're right of course, but i just want to get a feeling for this topic... i just try to decide if it's a good idea to use RevolutionHD, which is overclocked from the beginning.
And to get a feeling, I just asked about the risks, because the benefits are clear for me
To answer your question, yes, the sensation comes with thermal protection that helps against overheating. If the device becomes to hot, it(in most cases) shuts itself down until it cools. The CPU in the sensation is underclocked when it's shipped at 1.2Ghz(1188), but the true spec of the CPU is actually 1.5Ghz(1536). HTC underclocks the CPU to 1.2 to save on battery consumption. I personally have ran my phone just fine at the 1.5Ghz setting, I've even pushed it up to 1.6Ghz(1620) and it ran fine with the exception it did get just a little hot, but nothing to worry me. That being said I've since underclocked my CPU to 1296 and all is well. And afterall, how fast do you really need your phone to be before you take it too far and fry the cpu?? The sensation is fast right out of the box and even faster when using a NO sense rom, such as cm7(my personal fav)
Side Note : The new sensation XE ships with the cpu at it's original clock speed of 1.5Ghz.. both sensations have the 'exact' same cpu.
In regards to your GPU question, I have mine set @ 300mhz and not 320. The sensations GPU comes clocked at 266.I've ran it @ 320 and it ran just fine.. for me it's more of a personal preference. My graphics look just fine clocked @ 300mhz.. Below is a quote about the chipset and the new one coming out.
"With Adreno 225 Qualcomm improves performance along two vectors, the first being clock speed. While Adreno 220 (used in the MSM8660) ran at 266MHz, Adreno 225 runs at 400MHz thanks to 28nm. Secondly, Qualcomm tells us Adreno 225 is accompanied by "significant driver improvements". Keeping in mind the sheer amount of compute potential of the Adreno 22x family, it only makes sense that driver improvements could unlock a lot of performance. Qualcomm expects the 225 to be 50% faster than the outgoing 220."
if this helped, give the thank you button a punch
p.s. I've ran both insertcoin & revolution HD and both ran fine.. I just really prefer no sense roms
Quakeworld said:
To answer your question, yes, the sensation comes with thermal protection that helps against overheating. If the device becomes to hot, it(in most cases) shuts itself down until it cools. The CPU in the sensation is underclocked when it's shipped at 1.2Ghz(1188), but the true spec of the CPU is actually 1.5Ghz(1536). HTC underclocks the CPU to 1.2 to save on battery consumption. I personally have ran my phone just fine at the 1.5Ghz setting, I've even pushed it up to 1.6Ghz(1620) and it ran fine with the exception it did get just a little hot, but nothing to worry me. That being said I've since underclocked my CPU to 1296 and all is well. And afterall, how fast do you really need your phone to be before you take it too far and fry the cpu?? The sensation is fast right out of the box and even faster when using a NO sense rom, such as cm7(my personal fav)
Side Note : The new sensation XE ships with the cpu at it's original clock speed of 1.5Ghz.. both sensations have the 'exact' same cpu.
In regards to your GPU question, I have mine set @ 300mhz and not 320. The sensations GPU comes clocked at 266.I've ran it @ 320 and it ran just fine.. for me it's more of a personal preference. My graphics look just fine clocked @ 300mhz.. Below is a quote about the chipset and the new one coming out.
"With Adreno 225 Qualcomm improves performance along two vectors, the first being clock speed. While Adreno 220 (used in the MSM8660) ran at 266MHz, Adreno 225 runs at 400MHz thanks to 28nm. Secondly, Qualcomm tells us Adreno 225 is accompanied by "significant driver improvements". Keeping in mind the sheer amount of compute potential of the Adreno 22x family, it only makes sense that driver improvements could unlock a lot of performance. Qualcomm expects the 225 to be 50% faster than the outgoing 220."
if this helped, give the thank you button a punch
p.s. I've ran both insertcoin & revolution HD and both ran fine.. I just really prefer no sense roms
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some sources say adreno 220 can be overclocked to 400mhz .... bdw how can i overclock ...is der a app like setcpu for it ?????
rohit choudhary said:
some sources say adreno 220 can be overclocked to 400mhz .... bdw how can i overclock ...is der a app like setcpu for it ?????
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a few time ago some other user reported the same thing about adreno 220
but i think it is too high that value and it is impossible for gpu to handle such a value
in order to overclock the gpu you have to flash another kernel
I`m running zeus 5.2，everything is good.thank you dman!
but i notice some questions：
If you choose the governor ondemond,there is olny 50fps in game or neocore test,it is a little bit lag.But high cpu and IO score in quadrant(3300)
then you change the governor to perfrmence or conservative or interactiveX
you`ll get 56fps in game and neocore,the game runs quite good,but cpu and io score is lower in quadrant ( 2100 point)
I wonder what`s wrong with this problem?It someting wrong thunderbolt or kernel ?
thank you for your help.
neocore and quadrant are a joke. besides that kernel is no longer supported as all the old kernel devs left and there hasnt been any new source code to build from.
file system scores on quadrant are laughable, infact dont pay any attention to quadrant if you can help it, miui and a tweaks script can get you near 5000, that doesnt mean you increased capabilities by 5 times over stock.
if you want a file system benchmark then i dont know what to tell you, i dont know of any good ones. if you want a cpu benchmark then use chainfire bench. if you want a gpu bechmark use one that can actually bog down the gpu. neocore isnt enough of a challenge for anything with a modern gpu, thats for old snapdragon phones (nexus 1, incredible, evo....) or low level phone. the kernel limits the fps to about 56 fps, the reason the different governors show lower is that the thresholds and logic is different so it doesnt step you up as aggresively. being 6 fps off the cap doesnt show a deficientcy nessessarily, it might just be some lag in the step up or a high threshold for step up. or there may be a slight issue with that governor on that kernel.
Dani,thank you for your answer
I`m totally agree what you said that neocore and quadrant are a joke ^0^
I dont care the score but because i`m a noob,so I was curious with some something strange.
you could feel the different between 50fps with 56fps in some games, such as Dungeon hunter2 or bcakstab HD,but not in doodle jump ：）
maybe those kernel is no longer supported,and problems will not be solved,so I only hope that some new kernels come out soon .LoL
Hello guys,
Since i`ve seen so many debates about single vs dual-core, today i was bored and i tested with antutu and quadrant this thing.( I know that benchmarks isn`t a real proof in day-to-day performance )
WANT THE SCRIPTS FOR UNDERVOLTING AND FORCING CPU1 ONLINE OR OFFLINE ? See 2nd post
SO , what I actually did:
-flashed a freshly new rom ( using elegancia 3.1.0 for about 2 weeks and i found to be very stable and smooth with better battery life than any other rom i`ve tested)
-flashed latest bricked kernel min 192 mhz max 972 mhz with gpu oc @300mhz, lagfree governor, I/O deadline, both cores online via init.d script, booted and tested with antutu and quadrant and then i let the phone settle for a while to see what is the power consumption in stand-by with battery monitor widget.
-after that, i flashed bricked kernel with only max speed change to 1836 mhz, cpu1 offline via inid.d script and made those tests again
Here`s what I got:
Antutu: 4827 (both cores online, clocked @ 972 Mhz)
Quadrant: 2592
BMW: -19mA
Antutu: 4593 ( cpu1 offline, clocked @ 1.836 Ghz )
Quadrant: 3393 ( cpu1 offline, clocked @ 1.836 Ghz )
BMW: -28mA
Those numbers doesn`t reflect exactly the user experience. Some apps opened faster with 2 cores, some faster with only 1 core clecked at higher speed. The only major difference i noticed was in the browser( stock ICS browser) where the more fluid experience was with both cores on.
I`m gonna test those 2 configuration further to see which one has better battery and post some screenshots.
I will add a poll to see which configuration you think is the best.
Be aware that SoC are not created equaly, so the UV script or OC will NOT work with all devices.
Unrar the archive and choose what you want
This files needs to be copied in /system/etc/inid.d and then set the right permissions ( read: all 3 needs to be checked; write: owner checked; execute: same as read) . You need a file explorer that has access up to root ( i recommand Root exploer)
Benchmarks should always be done using Performance governor for consistency
Michealtbh said:
Benchmarks should always be done using Performance governor for consistency
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I knew that, but i wanted a more real-life experience, and in my opinion there isn`t that much difference in lagfree vs performance. I ran benchmarks 2 times and the scores where almost identical
Please be aware that because of the instruction sets hard coded at low level into the cpu it doesn not mean that 2x 900mhz cpu cores is equal to 1x 1800mhz cpu core because of the way in which the second core is utilised. Its exactly the same with pc's hence why sometimes an AMD cpu with 2 cores can give a better real world performance benchmark than an intel cpu with 4 cores. the same applies vice versa, it just depends on what instruction sets were used and how the cpu is used. Benchmarking stuff like this is not a reliable way to test
Jonny said:
Please be aware that because of the instruction sets hard coded at low level into the cpu it doesn not mean that 2x 900mhz cpu cores is equal to 1x 1800mhz cpu core because of the way in which the second core is utilised. Its exactly the same with pc's hence why sometimes an AMD cpu with 2 cores can give a better real world performance benchmark than an intel cpu with 4 cores. the same applies vice versa, it just depends on what instruction sets were used and how the cpu is used. Benchmarking stuff like this is not a reliable way to test
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Thanks (I'd use thanks button,but i'm limited to 8 oer day) for clarifying this for me and any other users, this post should be sticky because many members on xda think that way. I am aware that 2x900 doesn't equal 1x1800, but I didn't knew the exact explanation. The only reason that I did these tests was to see which configuration gives the best battery life. Their not equal, but acording to antutu, quadrant and end user experience they are comparable
Thanks for your time in doing these tests... It might not be reliable but it was interesting to know bout it... Im curious between the two tests though, which test puts the cpu under more stress? the first test shows awesome result on the battery so being single core might stress the cpu more, im guessing
Sent from my HTC Sensation using Tapatalk
AndroidNeophyte said:
Thanks for your time in doing these tests... It might not be reliable but it was interesting to know bout it... Im curious between the two tests though, which test puts the cpu under more stress? the first test shows awesome result on the battery so being single core might stress the cpu more, im guessing
Sent from my HTC Sensation using Tapatalk
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33% left and it's running for15 hours with 2 cores
Why do people really care so much about benchmarks. i just seen something about Samsung devices cheating the most. specs and benchmarks don't mean anything. Also doesn't the CPU Governor control the CPU clock speed. So When you're running an intensive app it ramps up the speed And then lowers the speed when its not needed to save battery? Also if your running a custom kernel ans set it to max performance it would tell you if the stock kernels cheat. i am just sick of seeing all this stuff about cheating on benchmarks
Is not because of the benchmark, is because they cheat.
Sent from my Galaxy Note II using Tapatalk 4
clapper66 said:
Why do people really care so much about benchmarks. i just seen something about Samsung devices cheating the most. specs and benchmarks don't mean anything. Also doesn't the CPU Governor control the CPU clock speed. So When you're running an intensive app it ramps up the speed And then lowers the speed when its not needed to save battery? Also if your running a custom kernel ans set it to max performance it would tell you if the stock kernels cheat. i am just sick of seeing all this stuff about cheating on benchmarks
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Yes brother.
Benchmark is really just gives you an approx range whwre your phone stand and its stability and other things.
But some developers use GPU for rendering and for smooth so in that case the Benchmark is low
As it is calculated on the basis if CPU Performance.
And
Some of the custom kernel have auto configuration of the CPU oc.
That helps the phone to get perfectly stable whichout adjusting.
And battery life of android.
http://hmpshah.com/how-to-save-android-battery/
Yes,
Actually it's not Cheating juat a small eroor or manipulation.
But some are really Good and Check perfect if your GPU Rendering is OFF
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I am confused how they cheat. Do they benchmark it with a benchmark app then published inflated results or do they bump up their cpu when benchmark app is detected to increase their score similar to overclocking in rooted phone.
workeuro fled
there's a quadrant cheat i found on playstore upping my quadrant score by 1000 points