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[Overclocking] [ICS/GNexus] GPU & Processor & RAM - Kernel Q and A

So I recently rooted my Galaxy Nexus and other than using WidgetLocker I haven't done anything to my phone to take advantage of my root and SU privileges.
This is my first phone that I have done this too so this is all a major learning curve which brings me to my question(s):
(1) Can the phones memory be over locked?
[If yes....] What are the factory Memory Times and what is a safe level to overclock them to - and How?
(2) What is the factory setting for the processor and what is a safe and efficient overclocked setting?
Is the Highest (but again safe and efficient) level a noticeable change?
(3) Overclocking the GPU can reach a maximum setting of 512Mhz (correct?)
What is the default setting for the GPU and is overclocking the GPU to the highest (but "safest" & efficient) level noticeable and worth the trouble?
(4) How do I overclock my phone?
I know that (probably) a kernel replacement is going to be the answer to this question but I was wondering if maybe there is a script I could run in recovery console or terminal, whatever...instead of replacing the entire kernel.
If the kernel is the only way, does this effect future ICS system updates?
What is the best (most stable, most features, best for overclocking) kernel for ICS/GalaxyNexus? - I dont know poop about kernels.
(4a) with the kernel loaded, what apps do I need to snatch from the market to actually overclock my Galaxy Nexus? Try to recommend free ones please =P
(5) Since I am replacing the Kernel, should I dive in 100% and flash a ROM too?
Yes?: what is the best (very very stable, fast, efficient, tweakable) ROM out there for GNexus?
do roms do anything to assist in the overclocking process?
The only reason I would consider a ROM too is because I want Wifi/USB Tethering, Facebook contact syncing, and a few other things.. but only if there are overclocking tools too!
Does flashing a ROM eliminate myself from ICS updates(pretty sure the answer is yes)??
(6) I am currently on a stock kernel and "rom" (if u couldn't tell...) but I am rooted and using Launcher Pro (free version) and I am happy with it but out of the other launchers which is the best (fastest, easy to use, customisable)?
If I flash a custom ROM will a custom launcher be necessary or do they cone with tweaked launchers?
I had other questions but I can't think of it right now, I'll update the OP and thread if I think of anymore. Thank you so much community members for taking time to answer these questions!!!
Sent from my Galaxy Nexus using XDA App

ksaul said:
(1) Can the phones memory be over locked?
[If yes....] What are the factory Memory Times and what is a safe level to overclock them to - and How?
Click to expand...
Click to collapse
No, it can't.
(2) What is the factory setting for the processor and what is a safe and efficient overclocked setting?
Is the Highest (but again safe and efficient) level a noticeable change?
Click to expand...
Click to collapse
1200 MHz is stock, 1350-1400 MHz is the highest you can get at the moment, as stability is an issue.
(3) Overclocking the GPU can reach a maximum setting of 512Mhz (correct?)
What is the default setting for the GPU and is overclocking the GPU to the highest (but "safest" & efficient) level noticeable and worth the trouble?
Click to expand...
Click to collapse
307MHz is stock (underclocked), 387MHz I believe is it's nominal speed, and is billed as 'overclocked' here on XDA.
(4) How do I overclock my phone?
I know that (probably) a kernel replacement is going to be the answer to this question but I was wondering if maybe there is a script I could run in recovery console or terminal, whatever...instead of replacing the entire kernel.
If the kernel is the only way, does this effect future ICS system updates?
What is the best (most stable, most features, best for overclocking) kernel for ICS/GalaxyNexus? - I dont know poop about kernels.
Click to expand...
Click to collapse
You need to flash a kernel using CWM Recovery. The kernel will be rewritten every time you flash a new ROM with that ROMs kernel, if you like a specific kernel you can reflash after installing a ROM, I use Franco Kernel which is by far the most popular. Once you flash a custom ROM you won't bother with ICS system updates, custom are bleeding edge with custom tweaks and months and months earlier than OTA releases.
(4a) with the kernel loaded, what apps do I need to snatch from the market to actually overclock my Galaxy Nexus? Try to recommend free ones please =P
Click to expand...
Click to collapse
SetCPU is by far the best, don't be a cheapskate shell out the $2 for it. AOKP ROM has one built in, but I still use SetCPU.
(5) Since I am replacing the Kernel, should I dive in 100% and flash a ROM too?
Yes?: what is the best (very very stable, fast, efficient, tweakable) ROM out there for GNexus?
do roms do anything to assist in the overclocking process?
The only reason I would consider a ROM too is because I want Wifi/USB Tethering, Facebook contact syncing, and a few other things.. but only if there are overclocking tools too!
Does flashing a ROM eliminate myself from ICS updates(pretty sure the answer is yes)??
Click to expand...
Click to collapse
Flashing a custom ROM will stop you being able to recieve OTA's, yes. But like I said earlier, they are ****. Custom ROMs are far, far better, so just keep up to date with your ROMs releases and you will always have a ROM with more features that stock OTAs. Most ROMS come with overclocked kernels, most have optimized kernels also, AOKP even has a built in overclocking program in the settings menu, which might appeal to you.
(6) I am currently on a stock kernel and "rom" (if u couldn't tell...) but I am rooted and using Launcher Pro (free version) and I am happy with it but out of the other launchers which is the best (fastest, easy to use, customisable)?
If I flash a custom ROM will a custom launcher be necessary or do they cone with tweaked launchers?
Click to expand...
Click to collapse
I don't know about other ROMs but AOKP comes with a custom launcher called Nova Launcher, it's essentially the stock launcher with tweaks.

wow thank you so much for your reply... i stumbled upon AOKP on droidforums before reading your reply and am actually about to flash it now - thank you for this very detailed response!!

No problem my man, there is actually a good few stable 1500MHz kernels out now and the GPU can be overclocked to 512MHz if you really want to kill your battery.

[Q] no-frills CPU recommended for stock JB?

I'm curious of whether it's okay to run no-frills CPU with stock JB, as it doesn't seem to have a CPU governor.
http://forum.xda-developers.com/showthread.php?t=911917
Is it recommended or needed?
Thanks!

On the stock kernel, it won't do you a ton of good... And you will have to be rooted to use it.

thanks, I'm rooted.
The reason it won't do me a good must have been that the stock already has a governor or something ???

palmwangja said:
thanks, I'm rooted.
The reason it won't do me a good must have been that the stock already has a governor or something ???
Click to expand...
Click to collapse
Stock kernel doesn't allow for under/overclocking... I guess there are a couple of governors on the stock kernel, so you could change those around?
Custom kernels give you options like under/overclocking, different governors, different schedulers... etc.
So there's no reason you can't put NoFrills or any other CPU control app on a stock kernel, you just won't get a whole lot of choices with the stock kernel

Can I use Overclocking kernels on a Stock Touchwiz S3

I don't want to put a custom rom on my s3, I just want it plain stock and rooted (and maybe a little bit more performance) but yea..

junowhoo said:
I don't want to put a custom rom on my s3, I just want it plain stock and rooted (and maybe a little bit more performance) but yea..
Click to expand...
Click to collapse
Yes.
Also setting window transitions to 0.5 in developer options will make your stock launcher much Snappier.
You'll want to install setcpu with any kernel you flash to allow governor and scheduler choice. There are also free options available, so do some research on that subject and you'll be good to go.
Sent from my SCH-I535 using Tapatalk 2

junowhoo said:
I don't want to put a custom rom on my s3, I just want it plain stock and rooted (and maybe a little bit more performance) but yea..
Click to expand...
Click to collapse
Ktoonsez has a touch wiz kernel and it comes with a great tweaker app
Sent from my SCH-I535

Kernels, must have a ROM ?

So, do you need a specific ROM for specific kernels? Or can you download kernels without a ROM?
Sent from my SM-G900T using XDA Premium 4 mobile app

If possible to download kernels, can someone link me to a list of them if that's how it works.
Sent from my SM-G900T using XDA Premium 4 mobile app

I know I am sounding like a total noob right now, I've flashed ROMs many times but don't know much about kernels

@jongonzalez716705
Of course you can flash a kernel without a rom.
Make sure that the kernel is compatible with your current rom.
Profits about a kernel;
+ Some kernels let your overlock your processors
+ faster boot time
+ some kernels have some other advantages.
Which phone do you have?
Hit the thanks button if you think this post is usefull .
Sent From A Samsung Galaxy S2 With AOSB Project ROM .

DanielBink said:
@jongonzalez716705
Of course you can flash a kernel without a rom.
Make sure that the kernel is compatible with your current rom.
Profits about a kernel;
+ Some kernels let your overlock your processors
+ faster boot time
+ some kernels have some other advantages.
Which phone do you have?
Hit the thanks button if you think this post is usefull .
Sent From A Samsung Galaxy S2 With AOSB Project ROM .
Click to expand...
Click to collapse
I currently have a Samsung Galaxy S 5 SM-G900T. I'm currently running XtreStolite ROM but currently running through some issues like wallpaper picker keeps force closing when I choose one, Setup for Fingerprint says to restart, I do, and still nothing, and tried downloading MyFiles but when ever I do an action, it force closes.

jongonzalez716705 said:
I currently have a Samsung Galaxy S 5 SM-G900T. I'm currently running XtreStolite ROM but currently running through some issues like wallpaper picker keeps force closing when I choose one, Setup for Fingerprint says to restart, I do, and still nothing, and another issue that I can't remember at this moment.
Click to expand...
Click to collapse
A new kernel will not fix that problems bro ... you should take another rom @jongonzalez716705

DanielBink said:
A new kernel will not fix that problems bro ... you should take another rom @jongonzalez716705
Click to expand...
Click to collapse
I know but I've downloaded a ROM before that had its own custom kernel. Had fun overclocking but spent more time underclocking. Is there somewhere where I can download certain kernels?

Yes,you can flash Kernels.
Why are custom kernels android useful?
Ans:Kernels are the brain of your Android device and communicate between software and hardware. Therefore, they are responsible for managing things like CPU / GPU clocking speed, screen sensitivity / colors or voltage. By using a custom kernel you can not only improve battery life, but also increase system performance.
Many custom ROMs already come with their own kernels. This is done to implement software communication of the custom ROM with the hardware of the device and also to ensure a better performance. Nevertheless, you are often also able to flash custom kernels to custom ROMs. If you decided to stick to a rooted version of stock Android, flashing a new kernel can offer you additional performance with the convenience of a stock OS.
Always make sure to check compatibility of the kernel with your ROM and device, because flashing a wrong kernel can brick your phone!
You can use this apk called as Franco.kernel. The app is available in playstore.

Yeah I was wondering this too....
Is it possible to take my original rom kernel (built for mediatek 6582) and use it on say cyanogen ?

biatche said:
Yeah I was wondering this too....
Is it possible to take my original rom kernel (built for mediatek 6582) and use it on say cyanogen ?
Click to expand...
Click to collapse
⬇⬇My reply is in the next page .⬇⬇
??????????????

biatche said:
Yeah I was wondering this too....
Is it possible to take my original rom kernel (built for mediatek 6582) and use it on say cyanogen ?
Click to expand...
Click to collapse
It depends upon the device,Features,ROM etc.
Sent from my Nexus 7 using XDA Free mobile app

imposible to have root with stock kernel and stock firmware?

Im having strange issues with root and super su, when i install cf auto root on a brand new fresh stock firmware at the next few hours super su suddenly sais:
There is no SU binary installed, and SuperSU cannot install it. This is a problem!
i know that changing the kernel fixes this... but cant i stay with root & stock kernel and firmware...?

Of you are already rooted i can advise you that you should change the kernel because custom cerbels are much better than the stock one, they have more benefits and better battery life undervolt changing governor or scheduler etc etc etc
Sent from my SM-G920F using Tapatalk

mosespl said:
Of you are already rooted i can advise you that you should change the kernel because custom cerbels are much better than the stock one, they have more benefits and better battery life undervolt changing governor or scheduler etc etc etc
Sent from my SM-G920F using Tapatalk
Click to expand...
Click to collapse
Wich kernel do you suggest me? i only tried arter87 kernel (with this one happened to me the same problem as described above) and i tried too SpaceX Kernel from TeamWin (this one worked for me vero well) but i imagine the are better ones.