I imagine that a lot of folks here are familiar with overclocking utilities such as SetCPU.
I installed SetCPU on my rooted SGH-1747, it installs fine, however it won't adjust the CPU frequency under the "Main" tab. My understanding (I'm new to overclocking) is that you need a custom kernel installed, these guys (first Google link for "overclock galaxy s3") talk about one for the i9300 version, however I can't find any information about the American version of the phone.
Has anyone tried to OC the SGH-1747 or know what is required. Thanks!
Quickclock, check it out, run the tests in the app. It will find Max and min voltage and frequency. Good luck.
This should work on a stock (rooted) phone. Worked perfectly on my DX with root.
Sent from my DROIDX
You need a kernel that supports overclocking the processor.
http://forum.xda-developers.com/showthread.php?t=1741684
I only know of one for the U.S. variant of the Galaxy S III.
BUT it is supported for T-Mobile. Not sure if it works on AT&T. You can browse through the replies and see if anyone has gotten it to work but I don't advise you to flash this until it would be officially supported for AT&T's model.
Related
For the people that maintained root through the update; are you able to use an app like setcpu or something to underclock the newly overclocked kernel?
Why would you want to underclock it?
indomfp said:
Why would you want to underclock it?
Click to expand...
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to improve battery live, but really undervolting would be more useful.
for underclocking, the companion core works much better and is very effecient for standby/basic use senarios.
undervolt won't work until we can flash custom kernels, which need a custom recovery to flash them, which needs an unlocked bootloader.
i don't think apps like setcpu know how to deal with tegra3's 4+1 core setup right now, someone can correct me if i'm wrong
My guess is that the UV/UC battery gains are going to be quite small with the ninja core taking the majority of the strain. There should be some kernel source from nvidia which indicates what the transition is from the different states - maybe the best gain would come from locking out the G processors.
I saw some LP <->G switching info in dmesg with a pre-ICS version, but it seems not to be there any more...
Well the reason I asked was because I'm one of the people who gets nothing but boot loops after the ics update. After trying everything, I was wondering if this could be done, which would narrow the issue down to a kernel problem.
Sent from my Galaxy Nexus using Tapatalk
Hi,
My sister-in-law has a galaxy s3 that keeps rebooting. samsung ota update to JB has been installed (I think)
There are a few possibilities as to what is causing it according to my searches through these forums,
Dodgy hardware:
I'll fitting battery
loose or dirty battery contacts
Dodgy software:
some reports of 'Nova launcher' causing reboots
some reports of 'System Tuner Pro' causing reboots.
Dodgy modding:
CPU undervolt too low.
We're looking into battery stuff and apps at the moment but I am suspicious that the device may be running at too low a cpu voltage for whatever reason, maybe faulty voltmeter reporting a higher cpu voltage that is actually there. I don't know really.
In order to increase cpu voltage by maybe 25mv and or reduce frequency slightly (should make more stable if it's a cpu/voltage issue???) I understand I need to install nstools and flash a kernel that supports overclocking.
I have some experience mucking with HTC HD2, HTC TyTn2, Samsung Galaxy Y and Asus TF101 so I'm not a newbie to the insides of android/linux but I was hoping that someone can advise if the stock kernel is good for OC or if not could someone please point me in the direction of a kernel that will allow us to run the stock rom unchanged whilst enabling the clock/voltage adjustments in nstools? Do I need to root for nstools?
If this is not possible will installing a rom like Omega Jelly-Bean be a better option?
Please advise..
Thanks
Ben
Hi Ben
When I had my galaxy s3 rooted (not rooted currently) I used cf root to root it initially and then flashed the ninphatamine 3 kernel. This allowed me to overclock and undervolt it. There are many apps on the play store which can undervolt (I personally used set cpu) but I'm not sure if they can increase voltage. They should be able to but I'm not entirely sure.
Hope this helps
Sent from my GT-I9300 using xda app-developers app
If you haven't rooted, the device shouldn't be undervolted. Ocuv only works on supported kernels. I use personally use siyah kernel and setcpu app combo. Recommend flashing stock firmware and see if there are any differences.
Sent from my GT-I9300 using xda premium
Hi guys. Im new and i need help. I game a lot on my gs3 and usually overclock my device. One thing i noticed is that when i overclock to 1.6mhz to 1.7mhz, it would stay there for like 5 minutes, but then the device gets slow and when i check the frequency it be on 1.0 mhz. I'm using a gs3 i9300 tried both setcpu and no frills. Im on latest siyah kernel running stock samsung rom. Thank you very much. (did i do this post right, is this the right section?)
Hello people.
Nowadays the major problem with smart phones, especially Samsung galaxy ones, is the lack of battery backup. However, it is possible to have more juice when needed for root users by undervolting.
http://forum.xda-developers.com/showthread.php?t=1743055
This is a handy package I found. It was originally made for HTC sensation but it works for many other rooted phones.
Can anyone please make a kernel with undervolt support for this device?
Sent from my gt s7562, rooted, 1.3ghz oc silvernexus kernel, pmp razer rom.
Hi there guys and gals. Having a bit of a problem with an S3 Mini exact model is GT-I8910N. Not my first Samsung root as I've done an S2 with dual boot kernel before. My question doesn't relate to which is the best. I am asking for viable ROMs which will reduce battery drain and overclock my cpu. I've used cyanogen on a g2 back in froyo. I've looked into virginity too and the crossover script part confuses me as I've normally just gone through odin and dealt with prepackaged kernels and roms. Which have it all combined. So I am looking for advice on roms but all viable roms not which is best. I can make that choice myself essentially. I'm wanting one with a reduced battery drain. CPU overclock. Bloatware removed and reduced down to as minimal as possible. An explanation of crossover would be greatly appreciated as well as known alternatives. Also am I limited to what types due to the N? I've read there's also an L and an International versions. Assuming that mine is an N as it's in the model number as seen in screenshot. Also is a rollback needed?