CPU speed Scaling / Changing - General Topics

Good Day!
My device is an O2 XDA 2, and i'm mulling about installing CPU scaling pograms like Pocket Hack Master or Xscalar, changing CPU speed to suit various needs.
But before I do...I need all your opinion about it....
the XDA is already at 400Mhz Xscale CPU meaning its is already a fast CPU but the batt life is short. For those of you who have tried the above softwares, do we really need this in our XDA 2?
Thanks fo the replies.

Related

[Q] overclocking with Set CPU

So I rooted my Droid X2 and installed Set CPU. I had problems running set CPU, I couldn't use the drop down menu for setting CPU governors, I also couldn't over clock my CPU, just under clock. Does set CPU work with the nvidia tegra 2 dual core processor in the X2? If not, which app will let me overclock and change CPU governors?
You have to have a custom kernel that allows overclocking.
lowandbehold said:
You have to have a custom kernel that allows overclocking.
Click to expand...
Click to collapse
I'm really new to Android, i've been using iOS for years, and finally jumped the fence. I just rooted my Droid X2, used Titanium Backup Pro to freeze all the bloated apps, and I wanted to get more control of my CPU, as well as overclock a little. I thought I could just install SetCPU and I would be able to Overclock.
So in order to have a custom kernel I would have to install a custom ROM? Such as Cyanogenmod? As I said, I am pretty new to Android, but if I am correct, Cyanogenmod is not available yet for the Droid X2 is it? Are there any other custom ROMs that are available or would work with my X2?
Is it really even all that necessary to overclock what is already a pretty powerful device? Nvidia Tegra 2 dual-core processor is powerful in its stock form isn't it? I would almost think I would gain more by dialing the CPU down at certain times, at least I would gain battery life. I think I am able to set up profiles with SetCPU without having a custom kernel, right?
This is a useless app made by Vietnamese people (I'm Vietnamese). It cannot overclock which many people mistakenly believe, and it only has the task of limiting the CPU speed, the CPU speed is managed by the OS and limiting it is a bad way because no matter what task it does it will be slowed down. When idle the CPU will automatically reduce its voltage and speed by OS. Any process no matter how big or small with high CPU speed it will be processed very fast even with small tasks that are reported not to use up CPU but it will still be faster than a slower CPU. Kernel Auditor is also useless.
it's not you install a custom kernel to manage cpu to overclock by some app but you're going to overclock into kernel using a custom kernel

best overclocking?

OK guys. After much searching i've just become confused as to which is the best overclock app/ROM for the HTC sensation z710e. I used SetCPU but it couldn't actually take my processors above 1.188GHZ and I tried the sense-o-maniac ROM and also the android revolution 6.0.3 ROM, both of which say the processors are overclocked to 1.5GHZ but there is absolutely no difference to me, no they are not slower, and I just want a clear straight up ROM or app that OVERclocks.
Thanks,
Sensation lover
I under clocked my cpu to 1 ghz and I see no difference in speed.... From 1.2 to 1.5 its 20% increase in cpu speed.... Speed of the phone doesn't depend on cpu alone... So thats around 7-10% increase in speed overall (because there is gpu, ROM, sd card, memory)... And thats maybe... Do you really think you can see 7% in speed? Try some synthetic cpu benchmark with 1.2 and 1.5 and only then will you see....
This is my five cents ;-)
Sent from my HTC Sensation XE with Beats Audio using xda premium
Well the app that controls the CPU clocking is limited in what it can do by the Kernel you're running.
If you're Kernel only supports 1.18 Ghz, Set CPU can't do anything about it.
So you need a Kernel that supports overclocking. The Kernel also controls what kind of governors who can put on the CPU (Conservative, performance, battery saving, etc...)
As far as the controller apps go though, I like the ones that can set the screen off speeds at a different rate than the screen on speeds. That makes sure I don't drain battery at alarming rates when the phone is in my pocket because a rogue app decided it wanted to get funky.
As Skipjacks mentioned, the overclocking speed is due to the kernel you have flashed.
If you are unsure on which kernel to use,
Always use the kernels suggested by the ROM developer.
Of course, you could try various Kernels but do keep in mind that not all ROM's support different kernels.
Normally the current roms has CPU clocking apps built into it,
one widely used is the Daemon control. It usually comes with an app that you can control the overclocking speed.
The current app i'm using, I use System Tuner Pro (yes I support app developers)
It enables me to force cpu2 online, which ultimately makes my phone faster.

[q] cpu chipset

does anyone know if setting the CPU SPEED to 1.5 GHz is dangerous while the SENSATION XL has the same chipset as the desire s has (Qualcomm Snapdragon MS8255) and the SENSATION XL's CPU speed is set to 1.5GHz .
sensation has msm8260 (dual core 1.2-1.5 GHz and adreno 220)
Sensation XL indeed has MSM8255.
Just like in PCs, chipsets in phones are binned not only by their type, but also by their target frequency. You don't go overclocking Core2Duo 1.8 GHz to 2.4 GHz because it's "the same CPU", right? Because it isn't the same CPU. The same applies here.
אז זה מסוכן או לא ?
English, please.
Answer - would you run the CPU on your computer at 1.5x the speed it was made to run, because there's CPU with the same name (i3/i5/i7/whatever) that runs at 1.5x the speed?
The same answer applies to your phone.
I expect people to be able to make minimal logic work with their own brains rather than just answering "yes/no". I think that this way people actually understand more than what they've asked for.
i guessed that was the answer but just wanted to be sure...
thanks anyway !
msm8255 should run stable on 1.5GHz (if stock freq is lower)
441Excelsior said:
msm8255 should run stable on 1.5GHz (if stock freq is lower)
Click to expand...
Click to collapse
No it won't. It depends on the specific part, and few parts run stock 1.5 GHz without stability issues surfacing / burning out very fast (if overvolted).
If you really want - you can try it on T-Mobile G2, that has MSM8255 of the earliest bin, with stock at 800MHz. Good luck, don't forget to write how did you like a phone as a toaster.
I suggest refraining from bad advice, especially when it's in the forum and it's not your phone you're talking about. You can burn your phones as much as you like, but don't go around suggesting it to others. Just let me understand something: you have stock non-rooted ICS and have no idea about such basics as which guide to use to downgrade, but you allow yourself posting about chipset frequencies?
so which speed can i overclock to that shouldn't turn my device into a toaster ?
deanshugan said:
so which speed can i overclock to that shouldn't turn my device into a toaster ?
Click to expand...
Click to collapse
1.2 runs most things with no lag.
Sometimes you're the windshield; sometimes you're the bug.
- Mark Knopfler.
The point is each chip is different even if the same model
What works for me on my device won't necessarily work for you
So test and see if your brave enough, but be aware of the consequences
Sent from my Nexus 4 using xda premium
I overclock my ds to1.5 every time I play games and it doesn't even get warm. So I think it's pretty harmless.
Sent from my Desire S using xda premium

[GUIDE][9500] Galaxy S4 CPU/GPU Overclocking and Undervolting

Galaxy S4 9500 only​Standard Disclaimer: Im not responsible if something wrong happens to your device Read the guide as much as you want before proceeding with overclocking
Overclocking and undervolting is highly debatable, some say its good and some say its bad... so its upto you to decide and proceed further
First rule of overclocking.. Your Mileage May Vary​
Most of the people here in xda do know about overclocking and stuffs but still there are many who are so eager to overclock their device . Hence this guide.
I have given some good info below about these stuffs as far as i can , you can always use google to get further details.
What is overclocking?
Overclocking is the process of making a computer or component operate faster than the specified clock frequency by the manufacturer by modifying system parameters. One of the most important techniques is running at a higher clock rate (more clock cycles per second; hence the name "overclocking")
Operating voltages may also be changed (increased), which can increase the speed at which operation remains stable.
Advantage:
You can get more performance from your chipset, though s4 is already fast you can see the visible changes in application execution time and much more like instant response time.
Disadvantage:
* Overclocking is always risky if something is configured improperly and may also result in permanent damage to your hardware. As long as it is done safely you are good to go.
* You may see some increased power consumption.
* Extreme overclocking might kill your hardware.
Undervolting :
The process where you provide less voltage to your cpu rather than the stock voltage.
Advantage:
* Reduced heat from your device.
* Good battery life.
Disadvantage:
* Extreme undervolting will make your device unstable and some times even end up with a boot loop.
Apart from the voltage table defined below for exynos the below mentioned data are common for 9500/9505
Overclocking in Exynos Octa:
Exynos 5410 is already one among the best performing chipset available, so overclocking this device is not going to give us any visible performance improvements except the benchmark scores. Underclocking is a different story on 9500, since the cpu temperature easily reaches upto 90C (90C is the throttle temperature defined for this device in the kernel, so its normal) undervolting the device will help in reducing the overall temperature of the device considerably. I highly recommend undervolting the device instead of overclocking it.
Exynos 5410 has 2 cpu clusters, stock voltages and available steppings are given below
Little Cores (A7) stock voltages
Code:
[B]STWEAKS[/B]
1200mhz : 1225mv
1100mhz : 1125mv
1000mhz : 1100mv
900mhz : 1037mv
800mhz : 987mv
700mhz : 950mv
600mhz : 950mv
500mhz : 950mv
400mhz : 950mv
300mhz : 950mv
200mhz : 950mv
Samsung divides the actual clock of a7 by 2 while displaying the steppings in order to accommodate the big little way of displaying values. Stweaks will show you every available steppings like above whereas most other cpu tuning apps show it like below, both are same though. stweaks @ 800mhz is equal to other tuning apps @ 400mhz
Code:
[B]OTHER CPU TUNING APPS[/B]
700mhz : 1225mv
550mhz : 1162mv
500mhz : 1100mv
450mhz : 1037mv
400mhz : 987mv
350mhz : 950mv
300mhz : 950mv
250mhz : 950mv
200mhz : 950mv
150mhz : 950mv
100mhz : 950mv
Big Cores (A15) stock voltages
Code:
2000mhz : 1250mv
1900mhz : 1250mv
1800mhz : 1250mv
1700mhz : 1200mv
1600mhz : 1162mv
1500mhz : 1137mv
1400mhz : 1100mv
1300mhz : 1062mv
1200mhz : 1025mv
1100mhz : 1000mv
1000mhz : 962mv
900mhz : 925mv
800mhz : 900mv
Though the cpu frequency table has steppings upto 2ghz the max stable clock i have seen so for on s4 is 1800mhz.
Requirements:
1. Kernel with overclocking/undervolting support.
2. stweaks or android tuner to change frequency/voltage.(you can use the app of your choice here).
3. set cpu and stability test to test the stability of CPU.
4. Some patience.
The below mentioned steps are common for 9500/9505
Step 1:
Set the current clock and voltage you want to test via android tuner/stweaks. (Select max frequency in cpu tab).
Example:
*If you want to test under volting for 1.4 ghz with 1050 mv (1100 is the default) then set 1.4 ghz as max clock and 1050mv as its voltage.
*If you want to test overclocking @ 1.7 ghz with 1150 mv (1200 is the default) then set 1.7 ghz as max clock and 1150 mv as its voltage.
Step 2:
Open set cpu's cpu stress test and run it for atleast 10 minutes. If you didnt get any errors or hang during the testing period and if the test completed successfully then the clock is ready for daily use
Step 3:
Now for undervolting use the same tools and reduce the voltage by -25mv.
Repeat step 2.
you can reduce the voltage further by -25 mv after every successful completion of stress test (Advanced users can try reducing -50mv )
Step 4:
Repeat step 1,2 and 3 for every possible cpu clock you see in android tuner/stweaks.
Note the stable cpu voltage for every clock, once you finish testing all your clock values save it as a profile and/or set it on boot.
Voila !!! now you have finished overclocking/ under voting your device.
Notes:
1. Never ever use set on boot option until you find the stable clock and voltage settings.
2. Not all chips are capable of running at higher speeds like 1800 mhz. Those speeds are highly experimental.
3. Recommended max overclocking is 1700 mhz.
4. If your device gets hotter allow the device to cool for few minutes before starting the test.
5. Either use stweaks or android tuner(or some other app), dont mix up.
6. Combining the overclocking and undervolting will give you the best of both the worlds
In case of emergency:
1. If your device becomes unstable and not responsive either press the power button until your device restarts or pull out your battery.
2. Android tuner has an option to create flashable zip for resetting the voltage table, use it if needed.
*********************Do note me if any information is incomplete or wrong ill change it.*******************************
Credits :
* wikipedia
* @AndreiLux and @wanam for their outstanding work on kernel development
Reserved for GPU
One more for some other if needed
I realize the thanks icon is there in order to prevent thanks spam.... however today I can not restrain myself.. thank you bala for this contribution
¡¡So say we all!! from Battlestar GT-I9500
well written and elaborate..thanks
thanks for the valuable input, but i differ on one thing. am using a 2Ghz overclock and is rock stable. using the GPU in the highest clock too....am attaching the STweaks values, battery and antutu score for the same. the device runs very cool too...hope this helps somone.
I do not know if am I doing it right or doing it wrong, but my phone runs without the (very occasional) hiccups and is as cool as it can be....and dat wat metters to me
thanks and regards,
Achyut.
P.S. - I resized the FHD screenshots to 25% for easy uploading.
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achyut said:
thanks for the valuable input, but i differ on one thing. am using a 2Ghz overclock and is rock stable. using the GPU in the highest clock too....am attaching the STweaks values, battery and antutu score for the same. the device runs very cool too...hope this helps somone.
I do not know if am I doing it right or doing it wrong, but my phone runs without the (very occasional) hiccups and is as cool as it can be....and dat wat metters to me
thanks and regards,
Achyut.
P.S. - I resized the FHD screenshots to 25% for easy uploading.
Click to expand...
Click to collapse
Thank you very much!! Only wanted to ask about the 800mHz and 900mHz volts of the little cores since it's not shown in the screenshots. Thanks. :good:
noideaforusername said:
Thank you very much!! Only wanted to ask about the 800mHz and 900mHz volts of the little cores since it's not shown in the screenshots. Thanks. :good:
Click to expand...
Click to collapse
oops...sorry...here,
achyut said:
thanks for the valuable input, but i differ on one thing. am using a 2Ghz overclock and is rock stable. using the GPU in the highest clock too....am attaching the STweaks values, battery and antutu score for the same. the device runs very cool too...hope this helps somone.
I do not know if am I doing it right or doing it wrong, but my phone runs without the (very occasional) hiccups and is as cool as it can be....and dat wat metters to me
thanks and regards,
Achyut.
Click to expand...
Click to collapse
hmm, with 400Mhz more You have same results as stock? something is wrong, maybe settings do not apply or overheating is causing cpu throttling down so scores are so low.
Kriomag said:
hmm, with 400Mhz more You have same results as stock? something is wrong, maybe settings do not apply or overheating is causing cpu throttling down so scores are so low.
Click to expand...
Click to collapse
Every chips has different mileage, even if his chip runs at 2ghz, it will throttle down in very few seconds.
Sent from my GT-I9500 using Tapatalk 4 Beta
achyut said:
thanks for the valuable input, but i differ on one thing. am using a 2Ghz overclock and is rock stable. using the GPU in the highest clock too....am attaching the STweaks values, battery and antutu score for the same. the device runs very cool too...hope this helps somone.
I do not know if am I doing it right or doing it wrong, but my phone runs without the (very occasional) hiccups and is as cool as it can be....and dat wat metters to me
thanks and regards,
Achyut.
P.S. - I resized the FHD screenshots to 25% for easy uploading.
Click to expand...
Click to collapse
Which Kernel are u using??? I assume ure using Perseus 4... Ive heard and read on some forums that ver 4 has some problems with Camera/Sound etc issues???
Plz confirm.... Thanks
Sent from my GT-I9500 (Hassan Khalid Malik) using xda premium
HassanM said:
Which Kernel are u using??? I assume ure using Perseus 4... Ive heard and read on some forums that ver 4 has some problems with Camera/Sound etc issues???
Plz confirm.... Thanks
Sent from my GT-I9500 (Hassan Khalid Malik) using xda premium
Click to expand...
Click to collapse
absolutely Zero issues.....camera opens at the blink of an eye. Am on wanams MEA firmware, trimmed and themed by me according to my need.
hope this helps.
regards,
achyut
tried oc upto to 1.8 ghz today and yes, im impressed
quadrant gave something around 14,500 and geekbench scored 4k+
bala_gamer said:
tried oc upto to 1.8 ghz today and yes, im impressed
quadrant gave something around 14,500 and geekbench scored 4k+
Click to expand...
Click to collapse
I increased the voltages as advised by u but the quadrant results are around 13000 benchmark...
I'm currently using Omega 8/Perseus 3.4 along with the cross breeder....
My phones very snappy but just wondering about the quadrant result... Is there anything I'm missing???
Plz advise...
Thanks
Sent from my GT-I9500 (Hassan Khalid Malik) using xda premium
HassanM said:
I increased the voltages as advised by u but the quadrant results are around 13000 benchmark...
I'm currently using Omega 8/Perseus 3.4 along with the cross breeder....
My phones very snappy but just wondering about the quadrant result... Is there anything I'm missing???
Plz advise...
Thanks
Sent from my GT-I9500 (Hassan Khalid Malik) using xda premium
Click to expand...
Click to collapse
clock ur cpu at 1.8 ghz , u will get some similar scores
bala_gamer said:
clock ur cpu at 1.8 ghz , u will get some similar scores
Click to expand...
Click to collapse
Thanks for replying.....
Should I ser this value in STweaks or SetCpu or both?????
Sent from my GT-I9500 (Hassan Khalid Malik) using xda premium
undervolting cpu
i dont get my phone pass all time stress cpu test but in my daily use he reboot all time!
anyone stable oc gpu? 640mhz or higher?
gpu overclock
jianlinooi said:
anyone stable oc gpu? 640mhz or higher?
Click to expand...
Click to collapse
mine is not so stabel something i manage to complete gfx berch and someting not on 700 on stock voltages!
jianlinooi said:
anyone stable oc gpu? 640mhz or higher?
Click to expand...
Click to collapse
yep....am on 700 mhz and is stable...check out my post in previous page, I shared the voltages for CPU & GPU.
regards,
Achyut
achyut said:
yep....am on 700 mhz and is stable...check out my post in previous page, I shared the voltages for CPU & GPU.
regards,
Achyut
Click to expand...
Click to collapse
looks like your chip is cooked well

Overclocking/undervolting the TF700 gpu

Dear XDA people,
Im currently working with Max's V4 RC2 kernel in combination with Cromi-X 4.6.9 (still need to update to the latest), which gives me a pretty smooth working tablet.
Now, im running the cpu at 1900mhz, 1225mV (still testing if i can go lower), and I can adjust speed and voltage nicely with Trickster Mod.
But, I would wan't to crank up the gpu speed (which is currently 666mhz I think?) and have the same "options/settings" available to do so. For example, a rom limitation of 750/800mhz on the gpu, with a variation of voltages to choose from. This way I can get as much gpu power as possible, since i find gaming on the tf700 pretty disappointing in terms of performance (of course a lot of games are not optimized for tegra).
Do you guys know what would be the best possible solution to overclock/adjust the gpu speed+voltage?
Thanks!
Sent from my GT-I9505 using xda app-developers app
tijsva said:
Dear XDA people,
Im currently working with Max's V4 RC2 kernel in combination with Cromi-X 4.6.9 (still need to update to the latest), which gives me a pretty smooth working tablet.
Now, im running the cpu at 1900mhz, 1225mV (still testing if i can go lower), and I can adjust speed and voltage nicely with Trickster Mod.
But, I would wan't to crank up the gpu speed (which is currently 666mhz I think?) and have the same "options/settings" available to do so. For example, a rom limitation of 750/800mhz on the gpu, with a variation of voltages to choose from. This way I can get as much gpu power as possible, since i find gaming on the tf700 pretty disappointing in terms of performance (of course a lot of games are not optimized for tegra).
Do you guys know what would be the best possible solution to overclock/adjust the gpu speed+voltage?
Thanks!
Sent from my GT-I9505 using xda app-developers app
Click to expand...
Click to collapse
I think 666mhz GPU setting is probably reserved for Satans minions. At the moment the only way to control GPU speed is by adjusting the voltage. This is easiest using hunds kernel (3.1 if you have problems with 3.2) and his app. Together, you can crank the GPU all the way up to 775MHz and fry some eggs on the back of your TF700 and waiting for it to go into nuclear meltdown.
I know the gpu runs hot, thats why I want to see what speeds can be achieved with limited voltage. So you‘re saying the only way to change gpu speed is by setting a higher voltage for it? Why is that exactly?
Sent from my ASUS Transformer Pad TF700T using xda app-developers app
You've posted this in the wrong forum, so it will be deleted, in the mean time there is really no reason to use 1900mhz even less so while gaming. 1700mhz at max (it can go higher but you wont see much change/ if at all in benchmarks/ games but u'll see the difference in battery life)
As for gpu i run 750 mhz but again the difference between 650 - 750 mhz is hardly noticeable, gaming performance isn't great on the tf700, the tf300t doesn't look as good but its noticeably smoother with 3d
Moral of the story the tegra 3 gpu isn't powerful enough for 1920x1200 the tegra 4 wont be much better, the tegra 5 is the interesting one
tijsva said:
So you‘re saying the only way to change gpu speed is by setting a higher voltage for it?
Click to expand...
Click to collapse
Yes, that's what I'm saying. Unless you want to learn to create kernels and do all the magical voodoo these wizards do to bring us OC kernels!
tijsva said:
Why is that exactly?
Click to expand...
Click to collapse
I have no idea, been wondering that myself. I even posted the question somewhere about a week ago, but no one enlightened me. I really reccomend using hunds kernel and app though. There is a "gaming" option in his app that works very well, good speed without the ominous red glow of molten metal on your TF700's back panel.
TitanUranus said:
Yes, that's what I'm saying. Unless you want to learn to create kernels and do all the magical voodoo these wizards do to bring us OC kernels!
I have no idea, been wondering that myself. I even posted the question somewhere about a week ago, but no one enlightened me. I really recommend using hunds kernel and app though. There is a "gaming" option in his app that works very well, good speed without the ominous red glow of molten metal on your TF700's back panel.
Click to expand...
Click to collapse
Are you saying increasing gpu voltage will subsequently increase gpu frequency? (i have no idea how it works, ive never bothered to look into it but now im interested) _that or Hunds will know but im guessing if thats the case freq and voltage must be linked in a voltage table but i would have thought freq could be changed independently to voltage
JoinTheRealms said:
You've posted this in the wrong forum, so it will be deleted, in the mean time there is really no reason to use 1900mhz even less so while gaming. 1700mhz at max (it can go higher but you wont see much change/ if at all in benchmarks/ games but u'll see the difference in battery life)
As for gpu i run 750 mhz but again the difference between 650 - 750 mhz is hardly noticeable, gaming performance isn't great on the tf700, the tf300t doesn't look as good but its noticeably smoother with 3d
Moral of the story the tegra 3 gpu isn't powerful enough for 1920x1200 the tegra 4 wont be much better, the tegra 5 is the interesting one
Click to expand...
Click to collapse
I know the tf700 isnt much of a gaming tablet unfortunately, but then again, why not setting it up so that it runs games as smooth as the hardware will allow ? Every small improvement is an improvement if you ask me.
For 750mhz gpu, what kernel are you using?
Sent from my ASUS Transformer Pad TF700T using xda app-developers app
I'm using hundsbuahs latest kernel, the problem with tegra CPUs is thermal throttling, it starts around 72c on a lot of devices (not sure about the tf700) at 1900 you could find worse gaming performance than a lower cpu / GPU clock speed. Its completely up to you, hundsbuahs kernels give users a lot of flexibility as they can push the devices to the limit, I like _that's kernels personally they suited to my usage (what ever that means)

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