Your best Undervolting Result!? - Galaxy S II Q&A, Help & Troubleshooting

I was just wondering what type of undervolt score you guys are getting from your Exynos CPU. Mine isn't too bad actually
1600 - 1300mV
1400 - 1200mV
1200 - 1100mV
1000 - 1000mV
800 - 925mV
500 - 825mV
200 - 800mV
The ROM and Kernel im using are in my Signature!
I would undervolt my GPU as well but I'd prefer something like Tegrak app but suitable for other Kernels!
Anyways the question is whats your score?

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[Q] Undervolting Problem

Been Undervolting on the Glitch Kernel, and trying different things. What I have set my UV to is just slightly too low I guess, because it keeps restarting..
Have never really Uv'd before and having troubles finding the Lowest possible..
These are my Settings ;
1500mhz - 0 = 1500mv
1440mhz - 25 = 1450mv
1400mhz - 25 = 1425mv
1300mhz - 25 = 1375mv
1200mhz - 25 = 1325mv
1000mhz - 50 = 1200mv
800mhz - 50 = 1150mv
400mhz - 50 = 1000mv
200mhz - 75 = 875mv
100mhz - 125 = 825mv
Any of this Look wrong?
Any Suggestions?
I dont belive you should UVing the OC... just makes sense that anything over 1ghz should stay with factory voltage settings. Could be part of the problem your having?
xplred said:
I dont belive you should UVing the OC... just makes sense that anything over 1ghz should stay with factory voltage settings. Could be part of the problem your having?
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dragonmodz has undervolted the OC on his kernel i think so shouldnt matter but might do for some phones
Try 100mhz at 875 and if that doesn't work try 1225 on 1000mhz
Sent from my SGH-T959 using XDA App

[Q] Stock voltage table, anyone have it? Using Glitch and NSTools

I've been looking through the forums and can't find this info. Anyone have it? I'm just wondering what the stock internal/leakage and cpu voltages are on the stock kernel. I don't have much interest in OC/UV or anything else, but I like Glitch's kernel.
I know previously you would just OV/UV by putting in the delta mV you want to use, but NSTools seems to want absolute values, not OV/UV values. Any help would be great, thanks!
Brian
Some info I found
So i did some more searching today and found two posts that I found relevant. In case anyone else is interested, i've posted links to the posts and copy/pasted the parts that I think answer the question.
http://forum.xda-developers.com/showpost.php?p=17907165&postcount=2
and
http://forum.xda-developers.com/showpost.php?p=19312756&postcount=1973
The first link says the below are the default values from the samsung source
1000MHz arm_volt=1275mV int_volt=1100mV
800MHz arm_volt=1200mV int_volt=1100mV
400MHz arm_volt=1050mV int_volt=1100mV
200MHz arm_volt=950mV int_volt=1100mV
100MHz arm_volt=950mV int_volt=1000mV
the second link is six responding to a question in their fascinate glitch thread. He states that he is fairly confident that the glitch kernel uses the stock arm voltages and that the high leakage values are very near samsung stock as well.
Hope this helps.
A little more info
And just a little more info I think is right for the v14 kernel that i've found.
v14 is high leakage by default, according to six, and you can modify from there using NSTools:
http://forum.xda-developers.com/showpost.php?p=20603857&postcount=2589
details on what each leakage was in previous versions of the kernel can be found in their new live OC thread:
http://forum.xda-developers.com/showpost.php?p=20845725&postcount=1
High Leakage is (default in v14 i think)
1400 : 1.200
1300 : 1.175
1200 : 1.150
1000 : 1.125
800 : 1.100
400 : 1.100
200 : 1.100
100 : 1.000
Also, I'd guess that the default arm voltages are those listed in the original post:
http://forum.xda-developers.com/showpost.php?p=17348688&postcount=1
Which are:
1700 MHz - [email protected] 243 MHz - 1.500v
1600 MHz - [email protected] 229 MHz - 1.500V
1500 MHz - [email protected] 250 MHz - 1.500V
1440 MHz - [email protected] 240 MHz - 1.475V
1400 MHz - [email protected] 233 MHz - 1.450V
1300 MHz - [email protected] 217 MHz - 1.400V
1200 MHz - [email protected] 200 MHz - 1.350V
1000 MHz - [email protected] 200 MHz - 1.250V
800 MHz - [email protected] 200 MHz - 1.200V
400 MHz - [email protected] 200 MHz - 1.050V
200 MHz - [email protected] 200 MHz - 0.950V
100 MHz - [email protected] 100 MHz - 0.950V

Stock cpu voltage of our s2 i9100?

Hello everybody. Just wondering if my Cpu downvolt has became in a performance improvement, especially in games. After downvolting cpu (gpu was already overvolted for overclocking to 400 mhz) I noticed an incredible improvement on games like nova 3 and asphalt 7.
Could you tell my what are the stock cpu voltages for... 200mhz, 400mhz, 600mhz, 1000 mhz and 1200 mhz clocks?
Thanks
tiner said:
Hello everybody. Just wondering if my Cpu downvolt has became in a performance improvement, especially in games. After downvolting cpu (gpu was already overvolted for overclocking to 400 mhz) I noticed an incredible improvement on games like nova 3 and asphalt 7.
Could you tell my what are the stock cpu voltages for... 200mhz, 400mhz, 600mhz, 1000 mhz and 1200 mhz clocks?
Thanks
Click to expand...
Click to collapse
Can anyone tell me the voltages?
tiner said:
Can anyone tell me the voltages?
Click to expand...
Click to collapse
200mhz = 950mV
400mhz = 975mV
600mhz = 1000mV
1000 mhz = 1175mV
1200 mhz = 1275mV

Undervolting cpu

Undervolting cpu means less performance? I Undervolted with a option from my kernel. Seems to get same quadrant score. Shoild i do other tests? Is it ok? I Undervolted just 25mv. I want good performance and good battery. Already removed a bunch of após with alot of wake up and wavelock. It Seems its much better
Sent from my GT-I9100 using Tapatalk 2
Undervolting results are fairly different because it depends on the usage.. if your.phone get lags or random shut downs or random reboots, then your phone cannot handle the UV.. but as what you have described, your phone seems fine
Sent from my GT-I9300 using xda premium
saywhatt said:
Undervolting results are fairly different because it depends on the usage.. if your.phone get lags or random shut downs or random reboots, then your phone cannot handle the UV.. but as what you have described, your phone seems fine
Sent from my GT-I9300 using xda premium
Click to expand...
Click to collapse
Thanks
Sent from my GT-I9100 using Tapatalk 2
Undervolting doesn't effect performance, underclocking does.
However as already pointed out if you undervolt too much your phone can freeze or reboot.
25mv undervolting is fine
Sent from my GT-I9100 using xda app-developers app
Obagleyfreer said:
Undervolting doesn't effect performance, underclocking does.
However as already pointed out if you undervolt too much your phone can freeze or reboot.
25mv undervolting is fine
Sent from my GT-I9100 using xda app-developers app
Click to expand...
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Tested with - 50mv seems not to have problem done a bunch of stress tests. Seems Nice
Sent from my GT-I9100 using Tapatalk 2
Gone back to - 25 loool spoke to soon got 2 freezes
Sent from my GT-I9100 using Tapatalk 2
Undervolting can be hit and miss. You just have to spend time tweaking and testing and find the best values for each frequency
I use an app called voltage control it's a great tool.
Sent from my GT-I9100 using xda app-developers app
I have been uv many times on different kernels. Still can't say if that really save more juice. You know, in theory it does. But there are plenty of other things that do. Starting from less brightness and being carefull what apps you install... I recommend GSam Battery Monitor to watch them.
How about gpu? Is bad to undervolt? Thanks again
Sent from my GT-I9100 using Tapatalk 2
jgcaap said:
How about gpu? Is bad to undervolt? Thanks again
Sent from my GT-I9100 using Tapatalk 2
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Ehhh. Don't Undervolt GPU. You will get constant freezes especially when you are playing games.
However Undervolting CPU by 25-50mv is fine.
Kernel configuration was:
200 Mhz - 950mV
300 Mhz - 975mV
400 Mhz - 975mV
500 Mhz - 975mV
600 Mhz - 1000mV
700 Mhz - 1025mV
800 Mhz - 1075mV
900 Mhz - 1125mV
1000 Mhz - 1200mV
1100 Mhz - 1250mV
1200 Mhz - 1300mV
Made a Manual configuration:
200 Mhz - 875mV
300 Mhz - 900mV
400 Mhz - 925mV
500 Mhz - 925mV
600 Mhz - 950mV
700 Mhz - 975mV
800 Mhz - 1025mV
900 Mhz - 1075mV
1000 Mhz - 1175mV
1100 Mhz - 1200mV
1200 Mhz - 1250mV
Seemed to be stable this way. On 1000 Mhz i couldnt undervolt -50 for some reason, gave imediate freeze. I've made 30 secound stress test on each frequency. Seems to be working fine
jgcaap said:
Kernel configuration was:
200 Mhz - 950mV
300 Mhz - 975mV
400 Mhz - 975mV
500 Mhz - 975mV
600 Mhz - 1000mV
700 Mhz - 1025mV
800 Mhz - 1075mV
900 Mhz - 1125mV
1000 Mhz - 1200mV
1100 Mhz - 1250mV
1200 Mhz - 1300mV
Made a Manual configuration:
200 Mhz - 875mV
300 Mhz - 900mV
400 Mhz - 925mV
500 Mhz - 925mV
600 Mhz - 950mV
700 Mhz - 975mV
800 Mhz - 1025mV
900 Mhz - 1075mV
1000 Mhz - 1175mV
1100 Mhz - 1200mV
1200 Mhz - 1250mV
Seemed to be stable this way. On 1000 Mhz i couldnt undervolt -50 for some reason, gave imediate freeze. I've made 30 secound stress test on each frequency. Seems to be working fine
Click to expand...
Click to collapse
Good post, very best working on 5.1.1 dity unicorns

Undervolt World Record? ;)

So, I managed to undervolt my s3 to the point that I'm scared to do it further (freqs 1600-900 are final, 800MHz-200 still open). This settings are fully stable (2 days no reboots...yet). I was desperate to lower my batt temperature due to thermal throttling in order to play some heavy game on emulator, and well - didn't expect such results!
1600MHz - 1212.5mV (-137.5mV)
1500Mhz - 1150 (-137.5)
1400MHz - 1075 (-175)
1300MHz - 1037.5 (-162.5)
1200MHz - 987.5 (-150)
1100MHz - 937.5 (-162.5)
1000MHz - 912.5 (-125)
900MHz - 862.5 (-137.5)
800MHz - 775 (-187.5)
700MHz - 750 (-200)
600MHz - 737.5 (-200)
500MHz - 712.5 (-200)
400MHz - 700 (-200)
300MHz - 700 (-200)
200MHz - 675 (-212.5)
ASV Level 8
Guys, if you managed to go achieve similar results post it along with your chips' ASV level, the other threads seem dead

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