[Q] How overclock GPU? - Nexus 7 Q&A, Help & Troubleshooting

I have nexus 7 3G 32gb with trinity kernel,stock ROM.And i have question how do i overclock GPU?

Use Trinity kernel toolbox. It has the option to set the speed of the GPU and adjust the CPU voltages
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winged mantis said:
Use Trinity kernel toolbox. It has the option to set the speed of the GPU and adjust the CPU voltages
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Can my GPU burn or something like that?Or high GPU frequency will cause only reboot?

I've read that the max recommended GPU speed is 484.Going much higher the battery will drain too much and will get hot. If you set the speed to high it will become unstable and usually reboot. It will reboot and rest default speeds long before it will have time to melt. Just don't use your over clock settings to be set on boot
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FatalaS said:
I have nexus 7 3G 32gb with trinity kernel,stock ROM.And i have question how do i overclock GPU?
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1. easiest way, use the trinity kernel toolbox and adjust the gpu slider up or down.
2. or manually go to /sys/devices/system/cpu/cpu0/cpufreq/gpu_oc/ with a root file explorer(like root explorer) and manually edit the variable and save it.
yes, it can get very hot if overclocking the gpu. especially when playing cpu intensive games. worst thing is youll reboot if things go haywire.

Excessive voltage and heat can easily fry a CPU/GPU and other motherboard components, so be careful.
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Related

60C too hot? Nexus 7

Hey guys I have my nexus 7 OC to 1.6ghz? MIN and MAX. It runs on 60C is that too hot? I'm using motley's kernel 520mhz GPU ?
iTzTrevor said:
Hey guys I have my nexus 7 OC to 1.6ghz? MIN and MAX. It runs on 60C is that too hot? I'm using motley's kernel 520mhz GPU ?
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its a little warm, but normal for 1.6ghz if youre using the device.
What is considered too hot? 70C ? I do have a gaming PC and do the same rules apply to what is considered too hot? For me 80C is too hot for my GPU on my PC. Is it fine to have the same mindset when it comes to my N7?
iTzTrevor said:
What is considered too hot? 70C ? I do have a gaming PC and do the same rules apply to what is considered too hot? For me 80C is too hot for my GPU on my PC. Is it fine to have the same mindset when it comes to my N7?
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stock thermal throttle is 85C(some custom kernels set this higher or lower). at that point the device will lower the cpu speed to cool itself off. safety shutdown is at 100C. if at 1.6ghz, and gaming, its probably normal to go into the 70C's if its a cpu intensive game. it also depends on the outside temp, the cooler its outside, the cooler the device will be.
Any way to revert back to the stock kernel settings? I reflashed the Stock kernel for the nexus 7 but i want to know its governor and voltage and etc back to full stock settings.
iTzTrevor said:
Any way to revert back to the stock kernel settings? I reflashed the Stock kernel for the nexus 7 but i want to know its governor and voltage and etc back to full stock settings.
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if you didnt change anything, it would boot up at its default settings. or if you have set something with a cpu app to boot, unset it and reboot.
Thanks. I wanted to do a comparison of different kernels and see which fits best for my everyday usage.
72° is when system panics
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Harry GT-S5830 said:
72° is when system panics
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depending which kernel youre using and what temp the thermal throttle is set for. you can even remove tbermal throttle when building a kernel, but the phone would just shut down when reaching the safety temp.
iTzTrevor said:
Hey guys I have my nexus 7 OC to 1.6ghz? MIN and MAX. It runs on 60C is that too hot? I'm using motley's kernel 520mhz GPU ?
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You might want to buy this...
http://www.amazon.com/Cooler-Master...UTF8&qid=1356771776&sr=8-1&keywords=hyper+212
iTzTrevor said:
Hey guys I have my nexus 7 OC to 1.6ghz? MIN and MAX. It runs on 60C is that too hot? I'
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Nobody can answer your last question unless you post a screenshot of your system info.
Rcoil73 said:
Nobody can answer your last question unless you post a screenshot of your system info.
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He got an answer like 4 months ago.
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[Q] CPU Clock speed

So I was trying to mess around with CPU profiles and I noticed that the low end of the CPU is clocked at 1GHz. If I lower it with Rom Toolbox, it just goes right back up after I leave the menu. the profiles won't stick, governors don't make a difference, and I'm a little confused.
Can someone shed some light on this for me?
I thought the lowest speed was 384 MHz? Install CPU Spy and check what it says.
It is 384MHz. The lower frequency change because of project butter that make the cpu run at a higher frequency when you touch the screen.
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Dont you need a custom kernal in order to change the clock speeds?
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No, we can already change it but it won't stick since it has its own frequency management.
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Is this somewhat similar to perflocker in HTC devices? It had to be disabled to change any cpu settings AT ALL with the stock kernel.
hervelo said:
No, we can already change it but it won't stick since it has its own frequency management.
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That is why..
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ed10000 said:
I thought the lowest speed was 384 MHz? Install CPU Spy and check what it says.
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You're right. I guess it just has its own profile to set at 1GHz when the screen is on, because the CPU Spy showed it in Deep Sleep/384Mhz for the majority of the night.
test1

GPU under clocking

UI still runs super smooth at 128MHz, so will setting it to this have any major positive effect on battery life? If not playing games I'm guessing u won't really need all that GPU power.
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bump
Well, in technical terms it *should* give you better battery life because it's reducing stress on a main hardware component so it doesn't have to work as hard (the harder it works, the more battery it takes). Same thing with the screen; the lower the brightness, the better the battery.
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What app allow you to change GPU speed?
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eksasol said:
What app allow you to change GPU speed?
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I know faux123's kernel app let's you.
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android88 said:
Well, in technical terms it *should* give you better battery life because it's reducing stress on a main hardware component so it doesn't have to work as hard (the harder it works, the more battery it takes). Same thing with the screen; the lower the brightness, the better the battery.
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Wouldn't it have to work harder for longer because it can't do anything as fast? It isn't like if you set the GPU clock to 487mhz it runs at 487mhz all the time, so ramping up to 487mhz would allow it to finish whatever it is doing faster wouldn't it?
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joshnichols189 said:
Wouldn't it have to work harder for longer because it can't do anything as fast? It isn't like if you set the GPU clock to 487mhz it runs at 487mhz all the time, so ramping up to 487mhz would allow it to finish whatever it is doing faster wouldn't it?
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Then wouldn't it be the same with the CPU? When I answered I was thinking like how a CPU would work. I understand your thinking though.
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Well I would like to add that the 540 sgx can power the 720P in the Galaxy Nexus... That dino is significantly weaker than the Adreno 320 even over clocked. I run 128 only and it works fine for games and even HD videos(YouTube). To confirm I tried Most wanted, dead trigger, temple run, riptide,etc and there weren't any issues(also toggled vSync). And if you use benchmarks like Epic cidel or antutu you'll see the frames are still pretty high.
So I'll say that 128 or even 200mhz is sufficient for this GPU and most purposes. However a good I/o scheduler and governor are still recommended.
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I think another advantage if it runs what you want at a good frame rate is less heat.

[Q] Nexus 7 General GPU/CPU Overclocking Help?

Hey guys, I'm new to the forums and fairly new to Hacking and overclocking android devices. However I have been building and overclocking high end PC's for sometime. So I am no stranger to the risks or processes of overclocking.
But I have some questions that maybe you all can help me out with before I start overclocking my Nexus 7.
Here are my Current Specs and Software:
Nexus 7 Wi-fi version
SmoothRom v5.0 + LeanKernel
Currently I am overclocked to 1500 Mhz Max with 204 Mhz Min + Stock voltage
I have been able to find information about CPU overclocking. But after extensive searching I have not been able to find much on Nexus 7 GPU overclocking.
1. Does my kernel support GPU overclocking?
2. If so how do I enable it? Or where is it located? and what settings should I be looking for (Names)?
3. If you need an App to overclock the GPU are there any that are free (Or at least one worth paying for?).... and which one if any supports my kernel?
4. Are there any good Nexus 7 CPU and GPU overclocking guides someone could point me to?
Basically I am looking for someone who is experienced in Nexus 7 overclocking, to point me in the right direction and help me with some indepth questions that may come up.
Thanks guys
What temperature is your CPU?
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kel29738 said:
What temperature is your CPU?
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According to System tweaks App 39c to 40c while idling in that program. I don't know how accurate that app is though.... so if there is a standard better app to monitor your CPU/GPU temps I am all ears
I have yet to find an app that allows you to monitor your temps during load. Again if you can suggest one I am all for it.
Try trickstermod
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Download trickster mod from the app store you should be able to change the gpu voltage there
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Alright I will check that out. But what about GPU clock settings can trickster change those too??? And if so.... What setting am I looking for because I saw nothing referencing GPU clocks in those words
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It over clocks the GPU its on the 2nd to last page I think and you will see the clock speed and you can edit it, don't over kill though haha
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Lean kernel doesn't have GPU over clocking settings. Try M-kernel, you'll find gpu settings in the specific menu of trickster mod.

[Q] Underclocking for root users Questions and thoughts

Ive been getting smoother results underclocking the G2 at either 1.7 or 1.9 and knock on seems more quick to response, but when I tried video recording the 60 fps isn't smooth when you are clocked at the regular speed.. beware...I ran a benchmark on quadrant standard and got 17,250 constantly so it is underclocked per core... I want to hear your opinion on this and do you plan to underclock or already are. I feel like the ability to be more smooth within the UI helps a lot more now..let me know your thoughts!
bencozzy said:
From using trickster mod and setcpu to underclock they only underclock cpu0 the other three still use the full frequency range.
What app are you using?
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No frills CPU control :0
At 1.9 my Antutu was the same add the One and oddly the graphics test dropped 15-20 frames even though we are not under clocking the GPU.
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That's really odd tbh o.o did you try quadrent as well? :0
jrgilbert79 said:
At 1.9 my Antutu was the same add the One and oddly the graphics test dropped 15-20 frames even though we are not under clocking the GPU.
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I got way higher even at 1.7ghz :0
jrgilbert79 said:
At 1.9 my Antutu was the same add the One and oddly the graphics test dropped 15-20 frames even though we are not under clocking the GPU.
Sent from my VS980 4G using XDA Premium 4 mobile app
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HeXaLox said:
I got way higher even at 1.7ghz :0
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You're saying that by underclocking, you're getting a smoother UI but lower benchmarks?
No i got a higher benchmark than the guy who replied on my post. I did get a smoother UI and everything is less laggy. Ill post a pic of 2.3ghz idk if its actually at 1.7ghz or 2.3ghz ill do another test
whittikins said:
You're saying that by underclocking, you're getting a smoother UI but lower benchmarks?
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All this is true. Just tried. It might be a TINY bit slower ui THOUGH
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What settings did toy use? Deadline? Noop? Interactive gov?
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I am using the app called No-frills CPU Control and for 1.7ghz I am using row and Ondemand as the I/O governor and same settings for the regular clock as well..
jrgilbert79 said:
What settings did toy use? Deadline? Noop? Interactive gov?
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Underclocked at 1.7ghz first then regular clock at 2.27ghz
jrgilbert79 said:
What settings did toy use? Deadline? Noop? Interactive gov?
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I am tending to believe that the regular clock speed is actually overclocked...just like how the galaxy s4 is overclocked 200mhz more than normal...however I could be wrong..
If you really want to see if this odd issue is actually happening download an app called Multicore CPU Control (the only app of its kind that seems to work with the LG G2). I use this to save battery by turning off all but one core, but it allows you full control over all your cores.
Download it, create a profile, and set each core to what you want. I had to save the profile first, then go back in to edit the latter 3 cores' frequencies.
I would suggest setting the min and max to the same and choosing Performance for the governor. Use a different app to set the scheduler.
Be sure to have something like Kernel Tuner to ensure that all your cores are running as you intended. If not, go back into Multicore CPU Control and re-save your profile again.
Would love to hear the results afterwards!
I used Multicore CPU Control.
The only way to set clock to CPU 1,2,3 is let them always active. If I leave dynamic for these cores, they still go up to 2,26 GHZ. I think this the reason why HeXaLox have a little decrement when underclock because it only did for one core.

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