Database Info

OC/UV - What Are Your Results?

Just started playing around with UV/OCing tonight and am pretty happy so far with the results. I'm just currently looking at getting some extra battery life with UVing.
Just curious what everyone else has achieved.
And yes I know, and everyone else should know, that just because someone else was able to get a certain OC/UV doesn't mean you will. So is the game of OCing anything.
Please post the full details of what you have achieved and/or what you run as a daily driver.
In this format:
(My current results, so far)
1120Mhz @ -125
1000Mhz @ -125
900Mhz @ -125
800Mhz @ -125
600Mhz @ -125
400Mhz @ -125
200Mhz @ -125
100Mhz @ -125
Rom: Continuum v4
Kernel: Onix - 2.0.1 #7
(I'm curious what the lowest voltage has been attained at stock/1120 clock)

bnevets27 said:
Just started playing around with UV/OCing tonight and am pretty happy so far with the results. I'm just currently looking at getting some extra battery life with UVing.
Just curious what everyone else has achieved.
And yes I know, and everyone else should know, that just because someone else was able to get a certain OC/UV doesn't mean you will. So is the game of OCing anything.
Please post the full details of what you have achieved and/or what you run as a daily driver.
In this format:
(My current results, so far)
1120Mhz @ -125
1000Mhz @ -125
900Mhz @ -125
800Mhz @ -125
600Mhz @ -125
400Mhz @ -125
200Mhz @ -125
100Mhz @ -125
(I'm curious what the lowest voltage has been attained at stock/1120 clock)
Click to expand...
Click to collapse
I have mine oc. to compensate with battery drain I was undervolting also here is my specs:
1400- 0 Quadrant - 2258 Linpack - 20.1
1000- 50
800 - 100
400 -125
200 -125
100 -150

Here's what I got
1400 @ -25 Quadrant ~1900 Linpack ~19
1200 @ -50
1000 @ -50 Quadrant ~1600 Linpack ~14
800 @ -75
400 @ -75
200 @ -100
100 @ -100
EDIT: I use Voltage control app, some people seem to have issues with set CPU
______________________
Samsung Captivate
ROM: designgear's Cognition v4.2.2
Kernel: eXistZ's KB1 #7 beta

i envy you guys that can run stable at those numbers. my results are
1280 -50
1000 -25
800 -100
400 -100
200 -50
100 -50
with less over clock i can get much lower voltages across the board and without over clock i can go lower still.
having the actual voltage the same for 1000 and 1280 seems to help stability. my chip deosn't seem to like voltage fluctuations. also the difference between the upper and lower voltage seems to be a problem. my phone is stable at -100+ across the board if i dont over clock. for that reason i tend to test things by undervolting from the upper frequencies down, if i go from the low frequencies i will see instability with very little undervolt untill the upper frequencies are also undervolted.

CM7 03182011, Kernel du Jour v4.2
Just UV, with governor set to "conservative"
1000: -100
800: -100
600: -125
400: -125
200: -150
100: -150

Cognition 4.3
Voltage Control App
Stability Test
Neocore
Linpack
Mhz UV Temp. Linpack
1300 -50 (20c/42c) 17.8~
1000 -50
800 -75
400 -100
200 -100
100 -100

Serendipity 6.3
Paragon 6 kernel @ 1344mhz
Linpack = ~18.8
1344 - 0
1000 - 50
800 - 75
400 - 100
200 - 125
100 - 125

I'm liking your numbers... I wonder if having 100 and 200 enabled makes a big difference. Eliminating 1200 and going from 1000 to 4000 seems quite a bit snappier.

Idk. Paragon kernel defaults the states.
jgrnght said:
I'm liking your numbers... I wonder if having 100 and 200 enabled makes a big difference. Eliminating 1200 and going from 1000 to 4000 seems quite a bit snappier.
Click to expand...
Click to collapse

Interesting thread...would be great to see what people are using for different roms..

I can't get 1400 stable, even at stock voltage.... but at 1300 I can get down to -75:
1300 @ -75
1000 @ -100
800 @ -100
600 @ -100
400 @ -100
200 @ -100
100 @ -100
Last time I tried going down to -125 it wasn't stable, but that was on a different kernel... gonna give it a try when I get a chance.

CM7 and The Escapist's kernel with Noop scheduler and 1300mhz limit enabled
1300 -50
1200 -75
1000 -75
800 -100
600 -100
400 -125
200 -125
100 -125

Nice to see everyone posting their numbers.
I'm finding that the UV setting I have are causing the phone to lock up once and a while. I did pass 50 passes of stability test and 30min of neocore. So are those programs really that accurate at testing stability? Is there anything better out there?

Playing Cordy for a bit seems to effectively stress the system, as I can get it to lock quickly even when seeming stable in the synthetic tests.
Cordy spends almost 100% of the time in top frequency state from what I've seen, plus its pounding the GPU.

bnevets27 said:
Nice to see everyone posting their numbers.
I'm finding that the UV setting I have are causing the phone to lock up once and a while. I did pass 50 passes of stability test and 30min of neocore. So are those programs really that accurate at testing stability? Is there anything better out there?
Click to expand...
Click to collapse
I've found that stability test is only accurate on the Mhz it is testing at. What i did was lock my Mhz at 1400, then 1300, then 1200, 1120, 1000, lastly 800. I had to have 5 frequencies ticked to get 800 to even work. I did each level to find the max UV for each level... then used those numbers.
I found having 1000 being my 2nd highest frequency, makes for a much snappier interface. Right now I have 1300, 1000, 800, 400, 200, 100.
Although I was able to use stability test all the way down to 800, I really couldnt test the lower frequencies with it. I found 125 was stable on the lowest 3 while doing benchmarking, however when moving back and forth quickly through settings options, mainly the drop down menus, it would cause it to lock up. So I raised the lower number up to 100 and no longer got crashes in option menus.
Here are the numbers I've settled with and get the quickest overall feel with.
noop scheduler.
1300 -50
1000 -50
800 -75
400 -100
200 -100
100 -100
Cognition 4.3 btw.

Tryng to underclock now. Blah, such a pain!

noop scheduler.
1200 -100
1000 -100
800 -100
400 -100
200 -100
100 -100
On Phoenix Ultimate Special Edition with Onix 2.0.3 kernal

No one else wants to brag?
Anyone aware of (or maybe could make?) an app that can test at each frequency? It would be very helpful to be able to test UV settings for frequencies in the 100-800 range. So far it seems the only "test" is once the phone locks up while navigating thew menus, bump up the voltage to all of the frequencies bellow 800.
(Thanks jgrnght for the suggestion on how to test each frequency 800+)

bnevets27 said:
No one else wants to brag?
Anyone aware of (or maybe could make?) an app that can test at each frequency? It would be very helpful to be able to test UV settings for frequencies in the 100-800 range. So far it seems the only "test" is once the phone locks up while navigating thew menus, bump up the voltage to all of the frequencies bellow 800.
(Thanks jgrnght for the suggestion on how to test each frequency 800+)
Click to expand...
Click to collapse
lol...nothing can beat with hands on experience...you can download cpu spy from the market it will tell you how your cpu stays in every frequency/states you have. From that data you will know which fequency needs more undervolting or tweaks.

Has anyone noticed a definite increase in battery life as a result of undervolting? Common sense points to that it would (less voltage needed, less battery power needed to power it) but does it really translate into solid real life results?
I'm hoping that all this UV business doesn't just give me an extra 15 minutes or something and that it actually translates into an hour or 2.
I got on CM7 TheEscapist's kernel:
1000: -125
800: -125
600: -125
400: -125
200: -150
100: -150
Scheduler: noop
Governor: Conservative

[Q] UV and power usage at different frequencies

Hopefully someone can either confirm my beliefs or clear up any confusion I may be suffering from lol.
If these are my UV settings (just the lower end of the freqs range):
192 MHz > 800 mV
310 MHz > 800 mV
384 MHz > 800 mV
432 MHz > 800 mV
486 MHz > 825 mV
540 MHz > 837.5 mV
Is there any difference in power usage between having my minimum wake frequency set to 432 MHz as opposed to 192 MHz? I am currently under the impression that since both frequencies are set to 800 mV, the end power usage will be the same.
Current Daemon Controller settings are:
Wake Min > 432 MHz
Wake Max > 1026 MHz
Ondemand
Sleep Min > 192 MHz
Sleep Max > 384 MHz
SmartassV2
And using Bricked 1.6 AOSP kernel.
And thanks, of course!
Sent from my Sensation using XDA App

-bump-
44 views and no one knows?
Sent from my Sensation using XDA App

[OPTIMIZATION][UNDERVOLTING] Testing different voltages and CPU behavior

I've asked the mods to close my other thread.
What I'll do in this thread is to test kernels and see which will be the best and or the most reliable undervolting parameters.
I know that each CPU/GPU are different, it will be only a reference for what can be done. I'll run extensive tests, stress test and real life test on the Nexus 7 device 32GB.
I'll reserve a couple of post areas because i want it to be a permanant thread and i put my device at risk for you my firends anyway it is not really an issue lol
I'll do the testing like that : ( how i'll do it and conditions )
1. I'll write the kernel name and version i am using for the test
2. I'll post the screenshots of the settings and/or a raw text of the settings for the specific kernel.
3. Trickstermod will be used for tweaking
4. Quadrant test for people who live for it
The conditions for the undervolt pass the test are the following
1. Running glowball for 30 minutes without crashing
2. Running Stability test 2.5 for 30 minutes. ( RUNNING EACH OF THE TESTS FOR 30 MINUTES C-A-D CLASSIC/CPU+GPU/SCALING TEST ) all in userspace mode.
Those settings will be the lower voltage achievable for me. You can use it as a reference but I cannot guarantee it will work for your device.. What I can suggest is using the boot delay option from the trickstermod menu. If we see that some settings are reliable for a lot of people, it would be nice to have help from some coders to write an init.d script with those settings. or just sharing other experiences. This is not a thread where I have the ultimate knowledge, but a thread who everybody can share their experiences, settings and so on to achieve the ultimate goal of performance and very low power consuption and battery life.
Those test will be time consuming but it is ok.
I do not expect any form of donation for that
If it helped you a little bit, you can just hit the help button and it will be my payday =)
Thank you very much
PS : For people giving 1 Star to the thread before I ever post the first undervolting settings, well, I do not know what to say. For the others who already tried the differents settings I,ll post day to day, feel free to post comments and rate the thread. You can even rate it 1 star if you want because you tried it. But for people who gave negatives reviews even if i didn't post any settings, please get a life.

December 4th 2012 6:06PM 1st stable aggressive undervolting
December 4th 2012, 6:06PM
ROM: Scott's CleanRom 3.0
Kernel : 3.1.10-franco.Kernel [email protected] #30
Stability issues : No
CPU frequencies settings : [email protected] Mhz
Governor : On Demand
I/O scheduler : Deadline
Read Ahead buffer : 2048
GPU Max frequency : 526
CPUQuiet Power Management : balanced
VOLTAGE SETTINGS : MPU
1300 Mhz @ 975 mv
1200 Mhz @ 950 mv
1100 Mhz @ 925 mv
1000 Mhz @ 900 mv
900 Mhz @ 875 mv
800 Mhz @ 850 mv
700 Mhz @ 825 mv
600 Mhz @ 800 mv
500 Mhz @ 775 mv
400 Mhz @ 750 mv
300 Mhz @ 725 mv
200 Mhz @ 700 mv
100 Mhz @ 675 mv
Notes for this undervolting
CPU stable at 975 mv for 1300 Mhz. Tried 970 mv with -5 incremental for other frequencies but the device just crashed. reverted back +5mv for all frequencies and run a second test and it was 100% stable.
The stock CPU voltage settings is 1175mv for 1300 Mhz and so on by 5mv incremental. We are able to achieve performance and stability with a global undervoltage of 200 mv. Actually this is a lot. What happened with the battery life ? Almost 8 hours gain vs the stock settings. This is a lot considering there is no drop with performances.
Edit : Just made other extensive testing. Played deadzone, dead trigger and gta 3 without any glitches. They run smoothly without freezes. We could assume this config is quite stable.
Next step would be undervolting bus and memory while trying keeping those voltages for the cpu. Ill need help to achieve that because i am not a big coder.

Ongoing testing ( may not be stable ) Dec 5 2012
ROM: Scott's CleanRom 3.0
Kernel : 3.1.10-franco.Kernel [email protected] #30
VOLTAGE SETTINGS : MPU
1300 Mhz @ 975 mv
1200 Mhz @ 950 mv
1100 Mhz @ 925 mv
1000 Mhz @ 900 mv
900 Mhz @ 875 mv
800 Mhz @ 850 mv
700 Mhz @ 825 mv
600 Mhz @ 800 mv
500 Mhz @ 775 mv
400 Mhz @ 710 mv
300 Mhz @ 640 mv
200 Mhz @ 635 mv
100 Mhz @ 625 mv
With on-demand, the tablet crash.
With interactive and other governors other than on-demand, seems working fine. Needs more testing

Reserved 3
Reserved 3
http://forum.xda-developers.com/showthread.php?t=2009702
He uses my voltage settings as his new kernel base I think. I must verify with him.
Sparksco use 1600 mhz with a ultra low voltage of 1100 mV.
Expect great battery life with his Rom and kernel

Reserved 4
Reserved 4

Reserved 5
Reserved 5

Good job, keep it up Mr. jsmasterx :good:

jsmasterx said:
December 4th 2012, 6:06PM
ROM: Scott's CleanRom 3.0
Kernel : 3.1.10-franco.Kernel [email protected] #30
Stability issues : No
CPU frequencies settings : [email protected] Mhz
Governor : On Demand
I/O scheduler : Deadline
Read Ahead buffer : 2048
GPU Max frequency : 526
CPUQuiet Power Management : balanced
VOLTAGE SETTINGS : MPU
1300 Mhz @ 975 mv
1200 Mhz @ 950 mv
1100 Mhz @ 925 mv
1000 Mhz @ 900 mv
900 Mhz @ 875 mv
800 Mhz @ 850 mv
700 Mhz @ 825 mv
600 Mhz @ 800 mv
500 Mhz @ 775 mv
400 Mhz @ 750 mv
300 Mhz @ 725 mv
200 Mhz @ 700 mv
100 Mhz @ 675 mv
Notes for this undervolting
CPU stable at 975 mv for 1300 Mhz. Tried 970 mv with -5 incremental for other frequencies but the device just crashed. reverted back +5mv for all frequencies and run a second test and it was 100% stable.
The stock CPU voltage settings is 1175mv for 1300 Mhz and so on by 5mv incremental. We are able to achieve performance and stability with a global undervoltage of 200 mv. Actually this is a lot. What happened with the battery life ? Almost 8 hours gain vs the stock settings. This is a lot considering there is no drop with performances.
Edit : Just made other extensive testing. Played deadzone, dead trigger and gta 3 without any glitches. They run smoothly without freezes. We could assume this config is quite stable.
Next step would be undervolting bus and memory while trying keeping those voltages for the cpu. Ill need help to achieve that because i am not a big coder.
Click to expand...
Click to collapse
how is the performance is it good because i have a lot of lag when i pull down the notification bar

sharjackmission said:
how is the performance is it good because i have a lot of lag when i pull down the notification bar
Click to expand...
Click to collapse
Undervolting should not impact the performance of the CPU.
What you can do is taking a look at the numbers and raise voltage a little. But it might be a lot of reasons why it is laggy. Possibly the governor ?
Other people tried the same settings without issues. But raisong the voltage a little wont drain the battery a lot as the number I gave are agressively low.
Cheers

Running on these settings and everything running smoothly. Thanks for the thread.
Sent from my Nexus 7 using Tapatalk 2

Running stock 4.2.1 with MKernel A19 & TRINITY... These voltages seem to be alright.
I am also using interactive and the deadline scheduler.
All is smooth so far... I'll report back if I run into any trouble.
UPDATE - Had to revert. Started getting freezes and crashes.
Trinity kernel's stock voltages seem to play nicely... Anything less is glitchy.

monsieurtalbot said:
Running stock 4.2.1 with MKernel A19 & TRINITY... These voltages seem to be alright.
I am also using interactive and the deadline scheduler.
All is smooth so far... I'll report back if I run into any trouble.
UPDATE - Had to revert. Started getting freezes and crashes.
Trinity kernel's stock voltages seem to play nicely... Anything less is glitchy.
Click to expand...
Click to collapse
For underclocking aaggressively for now I only recommand Franco Kernel. All other kernels Causes stability problems with the same voltages.
Ill let you know soon with that developpement.

Can't wait for m kernel optimizations

krazeecracker said:
Can't wait for m kernel optimizations
Click to expand...
Click to collapse
As soon as they realease the next version I'll test it.
For now the only thing it does is freezing the tablet.
The best undervolting I was able to achieve for now was with Franco Kernel because of the way the kernel is setting up. M-kernel and other boost Bus and memory speed that causes crashes with agressive undervolting.
Doing so, the performance gain is minimal and the battery life truly suffer at the end.
You can get except a few more FPS in certain games but not really noticeable.

jsmasterx said:
As soon as they realease the next version I'll test it.
For now the only thing it does is freezing the tablet.
The best undervolting I was able to achieve for now was with Franco Kernel because of the way the kernel is setting up. M-kernel and other boost Bus and memory speed that causes crashes with agressive undervolting.
Doing so, the performance gain is minimal and the battery life truly suffer at the end.
You can get except a few more FPS in certain games but not really noticeable.
Click to expand...
Click to collapse
No rush man, your work is amazing.

jsmasterx said:
As soon as they realease the next version I'll test it.
For now the only thing it does is freezing the tablet.
The best undervolting I was able to achieve for now was with Franco Kernel because of the way the kernel is setting up. M-kernel and other boost Bus and memory speed that causes crashes with agressive undervolting.
Doing so, the performance gain is minimal and the battery life truly suffer at the end.
You can get except a few more FPS in certain games but not really noticeable.
Click to expand...
Click to collapse
100% of everything you said in that post is untrue. Please make sure the information you pull out of thin air is correct before stating them as fact.
Also voltage tolerance at a certain frequency is device dependent. Not kernel dependent. No amount of circumstantial evidence will change the laws of physics.
One more thing, your frequency table in the first post is wrong. The A9 G core DVFS table does not go below 480MHz. Franco's table is wrong and as a result so is yours.

This thread looks interesting. If you'd like you can test my kernel attached to THIS post as a flashable zip.
:beer:

sparksco said:
This thread looks interesting. If you'd like you can test my kernel attached to THIS post as a flashable zip.
:beer:
Click to expand...
Click to collapse
I will. What would you like me to do after ?
Sent from my Nexus 7 using xda app-developers app

Metallice said:
100% of everything you said in that post is untrue. Please make sure the information you pull out of thin air is correct before stating them as fact.
Also voltage tolerance at a certain frequency is device dependent. Not kernel dependent. No amount of circumstantial evidence will change the laws of physics.
One more thing, your frequency table in the first post is wrong. The A9 G core DVFS table does not go below 480MHz. Franco's table is wrong and as a result so is yours.
Click to expand...
Click to collapse
I did not attack your kernel whats so ever i dont know why you are taking it personal.
As far as i know franco`s table is accurate and the G core can go under 480 mhz. To make sure i what i advance is true i even pluged the N7 to a debug box. My friend who is an analyst programmer certified it also
Sent from my Nexus 7 using xda app-developers app

jsmasterx said:
I will. What would you like me to do after ?
Sent from my Nexus 7 using xda app-developers app
Click to expand...
Click to collapse
Whatever the goal of this thread is I suppose. It's based on bricked kernel but I modified it a lot so it's not really much like it anymore. To some it up it overclocks to 1.6ghz and has quite a few governors. I'm testing smartassv2 right now but I have a feeling it's not good for battery. I haven't really tested many of the other governors but I've never had any of them lock up on me. Voltage control is also supported. No GPU overclocking though.
Sent from my Nexus 7 using Tapatalk 2

[Q] Power consumption of Qualcomm MSM7227A ?

I want to know the power consumption of Qualcomm MSM7227A, on 1 GHz.
I have the power_profile.xml info, obtained via this program - BatteryViewer by TKY.
For my Galaxy Mini 2 with MSM7227A (800 MHz) this is the information:
245 MHz - 30 mA
320 MHz - 50 mA
480 MHz - 80 mA
600 MHz - 100 mA
800 MHz - 180 mA
I want to overclock it to 1000MHz but I want to know if it's worth it. If the power consumption is too high, it would better to leave it at 800 MHz.
So, if there is anyone with Sony Xperia J, HTC Desire V, Galaxy Ace Plus, or LG Optimus L7 (all of them have MSM7227A at 1GHz) can you please tell me the declared power consumption of this CPU at 1GHz.
Anyone is welcomed to share their info so we can know the general power consumption of different CPU's.

I have a galaxy ace plus overclocked to 1.3GHz, and it seems to consume up to 600 mA. How to find out consumption at lower frequencies? I have to set max freq to lower, use it for a couple of days and check the stats? Or is there any simpler way?

The only way that I know of checking power consumption on Android is via factory written data in power_profile.xml.
Go to PlayStore, find BatteryViewer by TKY, install it. Then click the left button for options and click Power Profile.
For example you'll see something like this:
...
cpu.active 0 180.0
cpu.active 1 100.0
cpu.active 2 80.0
cpu.active 3 50.0
cpu.active 4 30.0
...
cpu.speeds 0 800000.0
cpu.speeds 1 600000.0
cpu.speeds 2 480000.0
cpu.speeds 3 320000.0
cpu.speeds 4 245760.0
....
How did you found out that your Ace uses 600mA at 1.3GHz?

=========
EDIT!!!
This version of Antutu didn't work properly on my phone. It didn't took into account the SD card speed, so the I/O result is much lower, and so is the overall result. But you can still see the implications of overclocking on cpu, gpu and ram.
=========
I also noticed that performance of the whole system is not scaling linearly with frequency. It's possible on some higher frequencies the system to be slower overall.
These are tests of my Galaxy Mini 2 with Antutu benchmark:
--------------
AnTuTu v.3.0.2
--------------
Frequency - 600 MHz
Total: 3155
CPU: 610
GPU: 2216
RAM: 259
I/O: 70
Frequency - 800 MHz
Total: 3427
CPU: 819
GPU: 2192
RAM: 326
I/O: 95
Frequency - 857 MHz
Total: 3283
CPU: 893
GPU: 1954
RAM: 341
I/O: 95
Frequency - 876 MHz
Total: 3327
CPU: 904
GPU: 1978
RAM: 350
I/O: 95
Frequency - 896 MHz
Total: 3389
CPU: 923
GPU: 2010
RAM: 356
I/O: 100
Frequency - 934 MHz
Total: 3370
CPU: 959
GPU: 1962
RAM: 349
I/O: 100
Frequency - 953 MHz
Total: 3464
CPU: 987
GPU: 2016
RAM: 356
I/O: 105
Frequency - 972 MHz
Total: 3471
CPU: 1002
GPU: 2012
RAM: 357
I/O: 100
Frequency - 992 MHz
Total: 3433
CPU: 1019
GPU: 1933
RAM: 366
I/O: 115
Frequency - 1011 MHz
Total: 3414
CPU: 1045
GPU: 1884
RAM: 375
I/O: 110
Frequency - 1083 MHz
Total: 3609
CPU: 1119
GPU: 1960
RAM: 415
I/O: 115

Strafeb said:
How did you found out that your Ace uses 600mA at 1.3GHz?
Click to expand...
Click to collapse
I use Battery Monitor widget, it lays out a plot of mA (usage) for a specific duration. In the plot the mA value peaked at 600.. Probably those were the times when I was using processor intensive apps.

mon_iker said:
I use Battery Monitor widget, it lays out a plot of mA (usage) for a specific duration. In the plot the mA value peaked at 600.. Probably those were the times when I was using processor intensive apps.
Click to expand...
Click to collapse
That is probably battery draing for the whole system including cpu, radio, wifi, screen...
Can you please check the data with BatteryViewer and post them here.
Thank you.

cpu.active 0 0.2
cpu.speeds 0 400000.0
The rest are empty. I get the same values whether I oc or not. So what info can I decipher from this?

mon_iker said:
cpu.active 0 0.2
cpu.speeds 0 400000.0
The rest are empty. I get the same values whether I oc or not. So what info can I decipher from this?
Click to expand...
Click to collapse
As far as I know, this file contains values from which the OS approximates power consumption for various components. They are fixed, factory predefined values.
Those values that you saw are default ones. It doesn't look your factory defined them. I have seen that on some phones there are no predefined values, so I don't know what's the deal.
What phone do you have?

Undervolting, what are your settings?

My battery is getting old and along with that its life length. So I decided to undervolt and found it stressful but fun (lol weird huh?).
I'm currently stress testing it using SetCPU's stress test, so far it has not crashed.
My undervolt settings:
100 MHz - 950
200 MHz - 950
300 MHz - 975 *
400 MHz - 1000
500 MHz - 1025 *
600 MHz - 1050 *
700 MHz - 1075 *
800 MHz - 1100
900 MHz - 1125 *
1000 MHz - 1150
1100 MHz - 1175 *
1200 MHz - 1200
* - I'm just assuming SetCPU sets this automatically since it skips some clock speeds.
However I set the voltages increment by 25, so far the stress test has not shown any crashes.
What are your settings?

I run about -75 I think across the board using AndroidTuner, no stress test, but seems stable.