Undervolting! - AT&T Samsung Galaxy S II SGH-I777

Hey ladies and gents! I was just wondering for those of you that undervolt, what app do you use and what settings/profile? Thanks!

If on AOKP, there's a way to set it in settings. Otherwise, Voltage Control or SetCPU.
Sent from my Galaxy S II (i777)

SetCPU works well for me. Pro tip: When testing new undervolt settings, DO NOT select "set on boot"...it can screw you over if your device can't handle the voltage settings.
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Related

Cpu master vs: Set cpu

ok folks lets debate this in detail witch
app is better for the atrix overall
ltdanno360 said:
ok folks lets debate this in detail witch
app is better for the atrix overall
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Click to collapse
+1 for SetCPU
frrst of all ever developer i have came across talks about using set cpu and it has specific version for xda community for free )try and top that )
2nd it has much more options then just over/under clocking and over/under volting.
3rd i havent found any problems with it yet so dont look for any other alternatives yet so hope this helps u with decision making.
+2 for SetCPU
Sent from my MB860 using XDA App
dag set cpu is popular i wonder why i have noticed less heat a huge differnce with cpu master
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+3 for set cpu
Joelesprod said:
+3 for set cpu
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Make that +4
SetCpu pwns.
-Yo momma's so stupid she finds iOS complicated.-
I like setCPU but when I slide the max cpu to 1000 and I reopen setcpu it jumps to 1300... I tried CPU tuner today and it has scaling and gives you a ton of option settings. I going to try it out for a while.
Im using no-frills
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I have tried both of those,but I have had better results and prefer the interface and options of System Tuner

Undervolt settings?

I am running the newest CM7 build, and faux 1.45GHz kernel, running excellently, but I would like to Undervolt the lower clock speeds in setcpu, can anyone suggest some mild UV settings to use, I don't really know how to go about finding stable figures. Many thanks.
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Found using "undervolt settings" as the search terms.
http://forum.xda-developers.com/showthread.php?t=1183059
please try to use the search function next time. it's instant answers.

Which app to undervolt?

Hi everyone, I have come from sgs to sgs2 and I do not know which app to use to undervolt. I used pimp my cpu in sgs and apparently I heard voltage control works but when I go into the app it does not show me the screen to undervolt. Only have general gpu and charging and about phone and info. I am using siyah kernel now. Can someone tell me what to do?
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I personally prefer setcpu than voltage control. Unless u got the extreme version
U can get setcpu for free(XDA members exclusive) at http://forum.xda-developers.com/showthread.php?t=505419

Set CPU

When i use set cpu and set the highest clock at 1 ghz it still goes past it to 1.2 ghz. Im useing siyah. Any help will be appreciated.
Sent from my SGH-I777 using xda premium
I doubt your kernel has anything to do with it because Siyah's kernel does support both OC and UC. Do you have any profiles that have a maximum of 1200Mhz instead of 1000Mhz? Those could be kicking in even when you don't want them to if you aren't careful.
Sent from my SGH-I777 using XDA
Nope I'm not using any profiles. Although in CWM in kernel specific options I did select performance mode if that has any thing to do with it
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Try deselecting that option or selecting a different one. I don't have a ton of experience with Siyah, but a performance mode sounds to me like it will default to the maximum CPU speed. Which on the SGH-I777 is 1200Mhz, stock.
Sent from my SGH-I777 using XDA
dogfax said:
Try deselecting that option or selecting a different one. I don't have a ton of experience with Siyah, but a performance mode sounds to me like it will default to the maximum CPU speed. Which on the SGH-I777 is 1200Mhz, stock.
Sent from my SGH-I777 using XDA
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Ok I will try that out
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Performance is a Governor for the CPU that sets it to Max frequency . That's what its FOR. So its doing what its supposed to. As previously stated you have to switch to a different governor in order to underclock.
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Phalanx7621 said:
Performance is a Governor for the CPU that sets it to Max frequency . That's what its FOR. So its doing what its supposed to. As previously stated you have to switch to a different governor in order to underclock.
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I'm not talking about the governor in CWM there is a option for default, battery and performance
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No, he doesn't mean anything to do with CWM. When you're selecting or switching to a governor, a list comes up and depending on the governor, your CPU will behave a certain way. If the maximum is set at 1200Mhz and is going to that speed when you have performance governor on, that's what is supposed to happen.
Sent from my SGH-I777 using XDA
my governor is luzactive
dirtbikerr450 said:
my governor is luzactive
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Uninstall any other clocking apps and clear application data (manage applications) for SetCPU.
Sent from my Galaxy S2
Change your governer to something other than lulzactive.
lulzactive forces your CPU at a certain rate. Thus, the "active". and the "lulz" on my end.

Undervolting applications?

About to flash Sebastian's 1.4. I was just wondering what applications people are fond of for undervolting and over clocking.
Any input would be greatly appreciated.
Thanks!
Sent from my ADR6425LVW using xda premium
System Tuner Pro.
CPU Master Pro.
SetCPU.
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+1 for set CPU
graybeard5 said:
+1 for set CPU
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SetCpu doesn't seem to have the undervolt option. Unless i just can't find it. Under what tab is it?
Sent from my ADR6425LVW using Tapatalk 2
set cpu way better than everyrhinh else
sent from my lovely phone....hmmm wait its a tablet...waaa i dont really know.....im PARANOID NoW!
abby_nitewolf said:
SetCpu doesn't seem to have the undervolt option. Unless i just can't find it. Under what tab is it?
Sent from my ADR6425LVW using Tapatalk 2
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Under the voltage tab.. afaik voltage tabs only appear on the these overclocking tabs only if your kernel supports undervolting...stock kernels dont support it..
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System Tuner
trickster2369 said:
System Tuner Pro.
CPU Master Pro.
SetCPU.
Sent from my ADR6425LVW using xda premium
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Or you could use System Tuner
SetCPU is the general go-to app for its straightforward appearance. The voltage tab sometimes does not appear even for a custom kernel with voltage tables; compatibility issues the app maker needs to correct.
Try System Tuner for an interface with a lot of other useful options and info with graphics.
Incredicontrol offers an interface similar in layout to SetCPU, and can toggle the Force Fast/AC Charge option for kernels with that have it. However, its voltage tables have had gray text on a white background for some users lately, making it a minor nuisance to read. Got the problem on my setup.
PhantasmRezound said:
SetCPU is the general go-to app for its straightforward appearance. The voltage tab sometimes does not appear even for a custom kernel with voltage tables; compatibility issues the app maker needs to correct.
Try System Tuner for an interface with a lot of other useful options and info with graphics.
Incredicontrol offers an interface similar in layout to SetCPU, and can toggle the Force Fast/AC Charge option for kernels with that have it. However, its voltage tables have had gray text on a white background for some users lately, making it a minor nuisance to read. Got the problem on my setup.
Click to expand...
Click to collapse
Just downloaded System Tuner, and the interface is amazing! So many available options!
Just wondering, what settings is everyone running for undervolting. I never had a phone which i can undervolt in so this is all new to me.
Sent from my ADR6425LVW using Tapatalk 2
abby_nitewolf said:
Just downloaded System Tuner, and the interface is amazing! So many available options!
Just wondering, what settings is everyone running for undervolting. I never had a phone which i can undervolt in so this is all new to me.
Sent from my ADR6425LVW using Tapatalk 2
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Click to collapse
Personally do -75mV across the board typically, pushing -82.5mV testing. -50mV should be reasonable for less accomadating cores.
All depends on your own CPU quality. Don't set tables on boot or by script unless they prove stable first. Or, just redo again each boot manually to be safest.
PhantasmRezound said:
Personally do -75mV across the board typically, pushing -82.5mV testing. -50mV should be reasonable for less accomadating cores.
All depends on your own CPU quality. Don't set tables on boot or by script unless they prove stable first. Or, just redo again each boot manually to be safest.
Click to expand...
Click to collapse
I'm running - 75. Thank you
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I've tried SetCPU Pro, System Tuner Pro, CPU Master, ROM Toolbox, and Voltage Control with both Funky kernel and dsb's kernel. None of the programs give me any voltage settings. So am I missing something?
xdadevnube said:
I've tried SetCPU Pro, System Tuner Pro, CPU Master, ROM Toolbox, and Voltage Control with both Funky kernel and dsb's kernel. None of the programs give me any voltage settings. So am I missing something?
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Funky kernel doesn't have adjustable voltage settings. It has a fixed -50mV undervolt. Not sure on dsb's kernel.
So for Global Sense 3.6 ROMs, what kernels will work for UV?
Shrike, good to see ya from the Charge forum. It is exciting to own a device with lots of development.
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xdadevnube said:
So for Global Sense 3.6 ROMs, what kernels will work for UV?
Shrike, good to see ya from the Charge forum. It is exciting to own a device with lots of development.
Sent from my ADR6425LVW using Tapatalk 2
Click to expand...
Click to collapse
I'm pretty sure dsb's works, but I haven't run Sense in a month, so I couldn't tell you what apps work with it. Try IncrediContol if you haven't already.
Also, good to see you here too. I'm still trying to help them out in the Charge forum when I can, but it's getting quieter and quieter over there.

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