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Why It is possible to overclock just at 1.3?

Hi guys.
I wanted to ask you something, because in our sl i9003 is the maximum possible overclock 1300 mhz?
The Artex-A8 processor is not it?
It should be a very powerful processor, but even though I've always overclocchi various lag to 1.3, with any rom.
And my device has no flaws ..
So, back to the main question .. because the maximum overclock is only 1.3?
Now I'm using the rom with the look dell's3 and formatted EXT4 but is slow and full of lag .. Help!
Thanks.
I'm wrong or sI9000 can be overclocked more with the same cpu?

davibs said:
Hi guys.
I wanted to ask you something, because in our sl i9003 is the maximum possible overclock 1300 mhz?
The Artex-A8 processor is not it?
It should be a very powerful processor, but even though I've always overclocchi various lag to 1.3, with any rom.
And my device has no flaws ..
So, back to the main question .. because the maximum overclock is only 1.3?
Now I'm using the rom with the look dell's3 and formatted EXT4 but is slow and full of lag .. Help!
Thanks.
I'm wrong or sI9000 can be overclocked more with the same cpu?
Click to expand...
Click to collapse
are u confused in between i9000 or i9003 phone?
Max overclock i9000 - 1.6ghz (i think)
Max overclock i9003 - 1.38ghz

vishal24387 said:
are u confused in between i9000 or i9003 phone?
Max overclock i9000 - 1.6ghz (i think)
Max overclock i9003 - 1.38ghz
Click to expand...
Click to collapse
No , he would be know why for our phone the max overclock is 1.38 ghz.. I would it know to..
Sent from my GT-I9003 using XDA

Our Max is 1.45(I think can't rmb). Each chip has different oc capabilities, my g3 could oc from 667mhz to 1.4ghz with no problems .
Cheers
Sent from my GT-i9003 powered by Stable and Smooth CyanogenMod 9!

Could so anyone develop a kernel with 1.45 ghz ??
Sent from my GT-I9003 using XDA

redflash52 said:
Could so anyone develop a kernel with 1.45 ghz ??
Sent from my GT-I9003 using XDA
Click to expand...
Click to collapse
As I said I don't rmb clearly, but its in 1.4-1.45 ghz
Cheers
Sent from my GT-i9003 powered by Stable and Smooth CyanogenMod 9!

Well, you can easly push your phone at 1500MHz (BCK kernel feature: Evolved sysfs interface for variable overclock or underclock), but the phone is not usable. I tried once to slowly change the frequency to see my limit and @1400MHz the phone became unusable.
Other than being unstable because, quoting XDA_Bam, "Anything more than 10% higher than the highest stock frequency is likely to be unstable", I think the voltage set for the 5th OPP is too low for anything higher than 1300MHz (maybe I'm wrong).
Proof? here.
Actually, this is "fake". To take this screenshot I had first disabled the 5th OPP, then I changed its frequency so that CPU Spy showed 1500MHz even though I wasn't really using it. The time spent at that frequency was actually the time the CPU spent at 1200MHz before I had disabled the 5th OPP
I did that to show you that it's actually possible to (easly) change the max frequency to anything higher 1380MHz.
EDIT:
And BTW devs are continuosly improving this device, we were first limited to 1100MHz, now some phones are stable at 1300MHz. Remember that our cousing (I9000) is older and has a huge community.
EDIT 2:
"I'm wrong or sI9000 can be overclocked more with the same cpu?" => "I'm wrong or sI9000 can be overclocked more with a totally different cpu?"

vishal24387 said:
are u confused in between i9000 or i9003 phone?
Max overclock i9000 - 1.6ghz (i think)
Max overclock i9003 - 1.38ghz
Click to expand...
Click to collapse
EDIT: -Looks like i am wrong too?

davibs said:
I'm wrong or sI9000 can be overclocked more with the same cpu?
Click to expand...
Click to collapse
You are wrong: the CPUs are different
i9003 has TI OMAP 3630 1GHz and i9000 has Samsung S5PC110 1GHz (code-named "Hummingbird")
Cortex A8 is just instructions and specifications for CPU. It's like DX10 for GPU. You can say Nvidia XXX card supports DX10 and AMD YYY supports it, why clocks for these cards and overclock potential are different?

I think the cpu of the i9000 is wors then the from i9003 so why is the i9000 overclocked to 50% and in our is it only 35%?
Cuold we not work on an overclock like 1.45 ghz for our phone ? Would it be unstable or is it because we need developers that can make it stable?
Sent from my GT-I9003 using XDA

redflash52 said:
I think the cpu of the i9000 is wors then the from i9003 so why is the i9000 overclocked to 50% and in our is it only 35%?
Cuold we not work on an overclock like 1.45 ghz for our phone ? Would it be unstable or is it because we need developers that can make it stable?
Sent from my GT-I9003 using XDA
Click to expand...
Click to collapse
But can anybody tell me that whats the use of such higher OC (1.45ghz) when u can do same stuffs smoothly on 1.2 ghz easily??? Also OC looks very attractive feature but in my opinioin its a deadly battery killer feature. OC upto 1.35 ghz is more than sufficient (I am satisfied with 1ghz max with superb performance & good battery backup).
Instead of wasting time on overclocking developers should work on overclocking gpu, kernel 3.0 or video codec, video recording in cm7, cm9, miui, aosp roms. Because for now thats a big problem for our phone.

vishal24387 said:
But can anybody tell me that whats the use of such higher OC (1.45ghz) when u can do same stuffs smoothly on 1.2 ghz easily??? Also OC looks very attractive feature but in my opinioin its a deadly battery killer feature. OC upto 1.35 ghz is more than sufficient (I am satisfied with 1ghz max with superb performance & good battery backup).
Instead of wasting time on overclocking developers should work on overclocking gpu, kernel 3.0 or video codec, video recording in cm7, cm9, miui, aosp roms. Because for now thats a big problem for our phone.
Click to expand...
Click to collapse
I am with you, we reached the limits of "smoothness" really (On stable roms, we shouldn't blame hardware when using buggy or incompletete roms or even stupid samsung roms.)
It would be better if devs focus on the GPU.

redflash52 said:
I think the cpu of the i9000 is wors then the from i9003 so why is the i9000 overclocked to 50% and in our is it only 35%?
Could we not work on an overclock like 1.45 ghz for our phone ? Would it be unstable or is it because we need developers that can make it stable?
Sent from my GT-I9003 using XDA
Click to expand...
Click to collapse
Remember when OCing just happened on our device? we were limited to 1080 Ghz, then to 1100 Ghz, then to 1200 Ghz/1300 Ghz, and now 1380 Ghz, devs will always figure out a way to squeeze more power and keep it stable, it needs time and effort.
The Galaxy S has a different CPU (That has lower OC potential then ours theoretically if i remember correctly) but has a bigger number of developers, it was released in 2010, our device was released in 2011 so it is kinda new.

vishal24387 said:
But can anybody tell me that whats the use of such higher OC (1.45ghz) when u can do same stuffs smoothly on 1.2 ghz easily??? Also OC looks very attractive feature but in my opinioin its a deadly battery killer feature. OC upto 1.35 ghz is more than sufficient (I am satisfied with 1ghz max with superb performance & good battery backup).
Instead of wasting time on overclocking developers should work on overclocking gpu, kernel 3.0 or video codec, video recording in cm7, cm9, miui, aosp roms. Because for now thats a big problem for our phone.
Click to expand...
Click to collapse
Yes of cours but some developers can't fix this bugs.. But maybe they are able to overclock the phone (like uc team) and i think it's not a battery killer.. If i have battery problems i buy for 10 € a new battery.. Some games and if i have 2 apps open the phon is luggy.. Maybe with an haiey overclock it will be smoother
Sent from my GT-I9003 using XDA

Remember guys, even if you OC the CPU, there will always be the weight of our outdated GPU dragging us down. Even if we OC to 1.45Ghz, you will always experience little bits of lag due to our PowerVR530. If I compare my friend's stock I9000 (No Mods, No Root, No OC:1Ghz) to my I9003 (with OC 1.38Ghz). My friend's I9000 will always be smoother due to both an advanced CPU and GPU.

FeelLikeASir said:
Remember guys, even if you OC the CPU, there will always be the weight of our outdated GPU dragging us down. Even if we OC to 1.45Ghz, you will always experience little bits of lag due to our PowerVR530. If I compare my friend's stock I9000 (No Mods, No Root, No OC:1Ghz) to my I9003 (with OC 1.38Ghz). My friend's I9000 will always be smoother due to both an advanced CPU and GPU.
Click to expand...
Click to collapse
Only their GPU is superior..
If someone could OC the gpu, we can probably reach their performance.

Skander1998 said:
Only their GPU is superior..
If someone could OC the gpu, we can probably reach their performance.
Click to expand...
Click to collapse
The uc team has tried but it seems the gpu frequency is locked
Cheers
Sent from my GT-i9003 powered by Stable and Smooth CyanogenMod 9!

bscraze said:
The uc team has tried but it seems the gpu frequency is locked
Cheers
Sent from my GT-i9003 powered by Stable and Smooth CyanogenMod 9!
Click to expand...
Click to collapse
Nope
http://forum.xda-developers.com/showthread.php?t=1451218&highlight=gpu+overclock
V9:
-Performace gpu and test overclocking to 300Mhz.
-Apply patch swa sources.(Many thanks to xda_bam)
-fix some small fix codes.
-Add vurrutCWM with many addons

Skander1998 said:
Nope
http://forum.xda-developers.com/showthread.php?t=1451218&highlight=gpu+overclock
V9:
-Performace gpu and test overclocking to 300Mhz.
-Apply patch swa sources.(Many thanks to xda_bam)
-fix some small fix codes.
-Add vurrutCWM with many addons
Click to expand...
Click to collapse
Yes as they said they're testing, they themselves said there is no way they can confirm its working
Cheers
Sent from my GT-i9003 powered by Stable and Smooth CyanogenMod 9!

bscraze said:
Yes as they said they're testing, they themselves said there is no way they can confirm its working
Cheers
Sent from my GT-i9003 powered by Stable and Smooth CyanogenMod 9!
Click to expand...
Click to collapse
But in the next version 9.1 they stated that they lowered the OC, (Still OCed) and this is the latest working version.
V9.1:
-Fix problems in recovery.
-Reduce overclock gpu to 220Mhz.
-Voltage ajustement.

Anyone know safe maximum voltage?

I am running stable overclock at 1.7 Ghz at 1425 mv.
Anyone know the safe limits of this processor?

mitchellvii said:
I am running stable overclock at 1.7 Ghz at 1425 mv.
Anyone know the safe limits of this processor?
Click to expand...
Click to collapse
Hello, i would like to know the maximum overclock frequency and voltage i can "safely" use. I'm doing digital painting with TVPaint and the processor is really struggling at 1.4 ghz... I notice a small improvement at 1.6 ghz but still not enough. What is the safe limit ?
Btw i'm using tegrak overclock.
Thank you.

[Please close thread} Achieve the best performance and batt life without sacrifices

Good day everyone.
After extensive testing I found the best voltages for our nexus 7 cpu.
those tweaks have been made with the kernel m13
ive tested and compared different voltages behavior and found that in almost every kernel and or roms , the voltage is too high and thisis not for the benefits of performance nor stability.
So ive started to underclock and watch the behavior of the N7 and found the perfect settings.
PS : If someone have better settings to share please feel free. Ill not try to push my idea. but yet i found it was the most better settings.
Sent from my Nexus 7 using xda app-developers app

for me this is absolutely useless due to the fact cpus are not the same,never and never will be,and voltages optimal for someone can give bootloop to others...a more accurate thing could be do 3 set of voltages optimization related to the 3 variant known of tegra3 t30,variant 1 2 and 3.e known that differences between 3 variants are the power needed to operate withpour rebbot..when variant 3 support and run at high frequencies with predefined voltage,the same freq. on variant 1 need more millivolt to run..with these 3 division,you can list 3 mode of undervolts,i think it's more usefull that now,but you can trace only yours variants in this mode..let's see if the 3ad will grown and others users with other variant will write its best voltages.just my 2 cent mate!
hi!:good:

Just tested SIMILAR voltages (the frequency steps were not all the same, most 30 Mhz off) on Trinity 4.2 alpha0 and it works great so far, we will see if I get soft resets or bootloops, but I hasn't yet do I don't think it will.

With this kind of information, can you PLEASE include the Tegra variant information? Because not all of us are lucky enough to have a variant 3 (as I suspect you have, with that kind of undervolting)...
Take my nexus 32gb for example, it's a standard Variant 1, and 1090mv at 1600MHz would most definitely result in problems if I pushed it hard at that level. I can just barely get away with 1150-1200mv at 1600... I suggest you run the stress testing/burn in application to make sure your voltages are stable as well
APplication is called "Stability test" and it will push your CPU/GPU to the max. If it runs continuously without any issues at that voltage level, you're fine..
See, I can set 1090mv at 1600MHz no problem on my variant 1, but if I run Stability test, I'll get a lock-up after 2-3 passes or so. By the same token, I'll get a lockup running glow ball and other intensive games. Just because it runs stable during a benchmark / every day use, does NOT mean it's stable.
Here's a link ot stability test: https://play.google.com/store/apps/...=W251bGwsMSwxLDMsImNvbS5pbnRvLnN0YWJpbGl0eSJd
Those of us who do a lot of overclocking on the PC etc know how important it is to "burn in" test your overclocks to make sure they are absolutely stable. This usually means running a linpack or other such intensive burn-ins overnight.. and you don't consider it 'stable' until it runs a LONG time, with no errors.

how do u know which variant you have?

BurnOne77 said:
how do u know which variant you have?
Click to expand...
Click to collapse
You have to be using a kernel that exports this info... I know Faux's does FOR SURE, and I think a few others have actually merged that over into their own kernels.
It would be under /sys/kernel/debug/t3_variant, I believe. So, as root, you can cat /sys/kernel/debug/t3_variant or just browse via ES file explorer or root explorer or whatever root file explorer you choose. The variant is the cpu_process_id
Each variant more than likely is based on where on the wafer or whatever the chip came from, meaning higher quality.... what it boils down to is the higher the variant, the more likely you'll be able to run at a higher frequency with less power.
Here's the post on the One X forums about Tegra 3 variants, http://forum.xda-developers.com/showthread.php?t=1815466
Lots of good information there.
I'd really like to see the OP run multiple passes of Stability test going 1600MHz at 1090mv, though. If you can do that, you have one exceptional chip, and you're very lucky. Remember just because something is stable in everyday use, doesn't mean it's truly stable.. very little that you do will actually stress the GPU/CPU to the max at the same time, which is the only thing that will truly show if you have problems with undervolting. I'd make a habit of running stability test for at least 5-8 passes (I like to do many more than this) to make sure an undervolt is at least somewhat stable.
If you simply say "This is the BEST! Why isn't everyone doing this? Why do kernels set the voltage so high?!" and have everyone simply drop down to those levels, you're going to have a TON of people who will start having issues. There's a reason why they are set that way. If everyone could easily get away with undervolting this much, it would be a no brainer to make it the default...

Good evening everyone.
ill look for the variant asap and will also runs the stress test as suggested. Even if it did well so far ill post accurates testing results besides the performance quadrant test.
cheers mates
Sent from my Nexus 7 using xda app-developers app

stress test so far
at the end i was tired running it but for now no errors or crash
due to some heat generated after 10 minutes the CPU dropped to 1400mhz instead of 1600. I was on performance mode.
edit : ill try to find my cpu/gpu variant. and post it. i am not sure wich application could give me an accurate information but i am actively searching.
Cheers

ok so i found the tegra3 variant. i am posting the results
cpu_speedo_id => 7 soc_speedo_id => 1 cpu_process_id => 0 core_process_id => 0
Sent from my Nexus 7 using xda app-developers app

sert00 said:
for me this is absolutely useless due to the fact cpus are not the same,never and never will be,and voltages optimal for someone can give bootloop to others...a more accurate thing could be do 3 set of voltages optimization related to the 3 variant known of tegra3 t30,variant 1 2 and 3.e known that differences between 3 variants are the power needed to operate withpour rebbot..when variant 3 support and run at high frequencies with predefined voltage,the same freq. on variant 1 need more millivolt to run..with these 3 division,you can list 3 mode of undervolts,i think it's more usefull that now,but you can trace only yours variants in this mode..let's see if the 3ad will grown and others users with other variant will write its best voltages.just my 2 cent mate!
hi!:good:
Click to expand...
Click to collapse
No offence OP, but this.
All CPUs are created differently, they won't behave the same at the same voltages. What might be stable for someone may be unstable for someone else. Take clemsyn's kernels for example, they are undervolted to the extreme so they might be stable on one device but not even survive a minute on another device.
So what works for you might not work for someone else. So maybe take the values in the OP as a guide, not as the "best performance and batt life without sacrifices". That might be a bit vague for some.
Within a single variant there might be chips that withstand less voltage than others too
Anyway, as the great kernel dev faux123 said:
faux123 said:
Not All CHIPS ARE CREATED EQUAL
Click to expand...
Click to collapse
Peace!
Mark

jsmasterx said:
ok so i found the tegra3 variant. i am posting the results
cpu_speedo_id => 7 soc_speedo_id => 1 cpu_process_id => 0 core_process_id => 0
Sent from my Nexus 7 using xda app-developers app
Click to expand...
Click to collapse
Thank you! Have you switched kernels at all lately, or anyhthing like that? Because I believe you're suffering from the same bug that I am.
When I switched from Faux's kernel to M-Kernel, my variant also reports as "0" when it was very clearly a "1" before.
If you really do have a variant 0 chip that is hitting 1600MHz reliably at 1090mv then you're one of the luckiest people around! haha. But like others have said, no two chips are created equal, it appears you have a very very good one.

mine is 7 1 3 0 in that order... I guess I have a lucky 3 This is a clean device running smoothrom and only seen bricked kernel 0.55 so far.
I also cat /proc/cpuinfo
and it says cpu variant is 0x2, my friend has no t3_variant file to see cpu_procces_id but we both get cpu varient 0x2, I guess we both have a 3?
everyone else try cat /proc/cpuinfo
and report back pls.

ive cated cpu info and here are the results
as the previous op said hejad revision 0x2 and i have the same so maybe i have a variant 3. But I really need to be 100% sure.
Processor: ARMv7 Processor rev 9 (v7l) processor: 0 BogoMIPS: 1993.93 processor: 1 BogoMIPS: 1993.93 processor: 2 BogoMIPS: 1993.93 processor: 3 BogoMIPS: 1993.93 Features: swp half thumb fastmult vfp edsp neon vfpv3 tls CPU implementer: 0x41 CPU architecture: 7 CPU variant: 0x2 CPU part: 0xc09 CPU revision: 9 Hardware: grouper Revision: 0000 Serial : 0f410a0001440200
Sent from my Nexus 7 using xda app-developers app

Hello Mods please close this thread
O'll open a new thread wich will be more clear and more neutral than this one.

[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

Can anyone overclock GPU

Can anyone over clock Exynos 7870 GPU to 1.5Ghz or +,i'm not developer only some of little bit game lover & web developer ,I use many kernel and Roms that support
1.7 Ghz CPU and 1.1Ghz GPU but when ever I play any game even on high frequency game lagging ,even on 1.4Ghz CPU frequency result is same ,mean over clock GPU help better performance on system and Gaming.
Hope any person understand me. Please do something that help Exynos 7870 users.
Currently using Aeon kernel https://forum.xda-developers.com/t/aeon-kernel-for-7870.4214325/#post-84251885

fahad15090 said:
Can anyone over clock Exynos 7870 GPU to 1.5Ghz or +,i'm not developer only some of little bit game lover & web developer ,I use many kernel and Roms that support
1.7 Ghz CPU and 1.1Ghz GPU but when ever I play any game even on high frequency game lagging ,even on 1.4Ghz CPU frequency result is same ,mean over clock GPU help better performance on system and Gaming.
Hope any person understand me. Please do something that help Exynos 7870 users.
Currently using Aeon kernel https://forum.xda-developers.com/t/aeon-kernel-for-7870.4214325/#post-84251885
Click to expand...
Click to collapse
Hardware limitations exist mind you... Devs just can't keep pushing OC beyond a certain point. That point for the GPU of the phone exists at around 1000-1146 MHz while for CPU the highest fully stable OC is at around 1690 MHz while some kernels try to push to around 1920 MHz but some devices at this stage crash or are very unstable so no one can push any higher unless you want your hardware to be toast that is by supplying enough voltage to sustain those clocks...