I have my NC dual booted with CM7 and 1.2 stock and I'm wondering how I can overclock it? Also, what are some pros and cons of overclocking? Thanks
I don't know how to OC the 1.2, but the CM7 already includes the OC kernel. Download an app like No-frills CPU control from the Market to change the speed.
Pros:
Faster
Faster
Faster
Higher voltages - more stable
Cons:
Too much will overheat
Too much will give you SOD
Too much might fry the CPU.
In summary: Don't do it too high.
Related
What are the benefits of OC/UV (particularly for CM7)?
I know of improved performance due to OC, but what does UV do in regards to performance. Also, how does an OC/UV kernel compare to one without the option?
your processor doesn't need as much voltage as the stock settings--undervolting lets you save battery
personally i want to know.. do you have to UV to OC?
xredjokerx said:
your processor doesn't need as much voltage as the stock settings--undervolting lets you save battery
personally i want to know.. do you have to UV to OC?
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You can do either or both but don't have to do both. At some point UVing will cause a crash. Right before that point it can cause performance issues. See the link below for instructions on how to find an optimal UV level to maximize battery savings and performance.
http://forum.xda-developers.com/showpost.php?p=10936691&postcount=1102
OCing improves speed but can also cause stability issues. For a captivate this usually isn't a problem until you get past 1.2 ghz. After that, it depends on the kernel but I have yet to find a kernel that is completely stable past 1.2 ghz under stressful conditions. Samsung designed the processor to handle 1.2 ghz and in theory it can go up to at least 1.6.
Like everyone before me has said, OC will make your processor work more (which will eat up more battery, and send the temps a bit higher).
UV is a way to "fix" that problem by controlling the voltage used by each Mhz/Ghz range. The mini guide that QuarkGluonSoup posted is a great way to start off.
Most Captivates start have random errors past 1.2Ghz, but the highest I've seen (stable) are 1.4Ghz.
venomio said:
Like everyone before me has said, OC will make your processor work more (which will eat up more battery, and send the temps a bit higher).
UV is a way to "fix" that problem by controlling the voltage used by each Mhz/Ghz range. The mini guide that QuarkGluonSoup posted is a great way to start off.
Most Captivates start have random errors past 1.2Ghz, but the highest I've seen (stable) are 1.4Ghz.
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Odd as it sounds, my battery life on CM7 is close to 50% better when it is OC'ed to 1.2 ghz and UV'ed than it was on the froyo ROMs under the same conditions.
That really is odd :S I think I'll try it myself.
Hello
I recently acquired a nook color and i am going to install cynogen mod 7.1 and google apps from clock work recovery method, but i want to overclcok to 1.2 or 1.3 ghz, i understand that cynogen mod has an overclock facility built in, the part i am not sure about is to reach 1.2 ghz or 1.3 ghz do i have to use dalingrin overclock kernel to achieve these speeds, or is it possible in cynogen mod 7.1 without the kernel.
Any info would be appreciated.
Regards
Mark
Dal's kernel has been included in there for a while now. If you use 7.1 stable to later nighlies you are definitely safe.
ok, thats great, thanks for the reply, appreciated.
Regards
Mark
It appears the GPU may run best at 1200, even thou the CPU can do up to 1300.
It certainly seems to be true that going past 1200 can slow down graphic intensive operations. I am guessing that's probably because the graphics processor has to run at a ratio of the CPU and going past 1200 ends up with a lower graphics frequency.
But depending on the type of applications used there can be benefit in going higher and most Nooks seem to be capable of 1350. This can be seen in two different benchmarks. Quadrant gives significantly higher scores at 1350 than 1200 whilst the graphically more intensive Nenamark is slower at 1350 then 1200.
I ended up using 1200 anyway as it feels fast and probably also helps with battery life.
Check the voltage settings as well as these can normally be lowered a bit to help again with battery life. I use the one's originally quoted by Dal and don't have any stability issues. ( 09.25 / 1.05 / 1.2 / 1.275 / 1.325)
I did a comparison of 1200 and 1350 MHz with the Sunspider JavaScript bench. 1350 is faster but frankly I have a hard time telling the difference between even stock clock and 1350 in actual practical usage.
The most obvious speed boost I've found is running 16bit color. Big difference in browser scrolling performance.
Is overclocking it fully safe?
GuTsaV said:
Is overclocking it fully safe?
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From the standpoint that breathing in a metropolitan area is not fully safe, no it is not.
I use the stepper built-in to 7.1 stable and have never given it a second thought.
Try nook color tweaks.
Sent from my [R3] BLURR3D DROID BIONIC using XDA App.
GuTsaV said:
Is overclocking it fully safe?
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I have run at 1200 / 1350 for the last 4 months and it has been stable and I have not seen any real detectable difference in battery performance or in how warm the device gets. The governor means that a lot of the time the Nook is running at lower clock speed anyway.
I don't recollect seeing any reports of damage on this forum to the Nook through over-clocking. Increasing voltages from the stock values on the other hand is probably not a good idea. There may possibly be longer term effects from overclocking but I'd guess the effect on lifetime is small enough that most people will have changed their device before it is significant.
GuTsaV said:
Is overclocking it fully safe?
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Being that Nooks CPU is underclocked by default. It is very safe.
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Sent from my LG Optimus V using Tapatalk
I just installed Tegrak OC and I am a little mystified on the best setup up for my note. I have Darky rom 3.3 and Franco test Kernal installed. If anyone has this combo and is using Tegrak what have you found to be the best setup for battery and performance together ?
Why do you need to O/C Your note??Its already very quick at processing and overclocking only leads to lesser processor life,battery life and consume lot of power.If I were you,I would leave it as it is
I'm using Tegrak and franco.kernal on stock deodexed rom. I have cpu set at 1600 but don't know enough about the other settings to make any other changes.
I was about to start a thread on this same subject. Thanks ingott77!
@vijai2011 I OC because I have the need for speed!!! And, it actually makes GB run smoother and quicker. I don't yet know if I will use it once the official ICS is released. I've heard the ICS is very quick and smooth compared to GB.
kraz
Yeah i have francos test and running 1.6 overclock with the same voltage as stock 1.4ghz (1300mv). Is completely stable for me. Overclocked the gpu too to 267/400. 400mhz is stable for me at 1000mv but may not be for others. Be careful of overheating with 3d games though. Also changed io scheduler to deadline - its francos default but for testing he changed to noop for stability testing.
Sent from my GT-N7000 using Tapatalk
Anyone else found this?
I was on CM7.2 with Glitch 13.1 and was able to OC safely to 1.7Ghz STABLE!!! And further more I NEVER had to touch the voltages.
But now I'm on CM9.1 with Devil3 1.4.1 I cannot OC past go 1.2Ghz with LiveOC at 110% giving me a determined CPU clock of 1.3 and a bit Ghz, if you push LiveOC to 111% at 1.2Ghz it reboots and you have to clear NSTool Settings from recovery.
Is it just me or is LiveOC a much poorer idea then the methods for overclocking used by Gingerbread...? Should I try Glitch v14 Beta 6? Even though it looks as though the Glitch kernel project has been abandoned :'(
This is just leaving me with a very s**t taste in my mouth as I was looking forward to Ice Cream Sandwich... anyone else having this issue?
You have to increase the voltages. When you set 120%liveOC, 1000Mhz are now 1200Mhz and you should set the same voltage for it as you get automatically on 1200Mhz normal OC. And you should mind that liveOC doesn't only OC the CPU, so it makes your device faster than normal OC, but it's more unstable. The maximum liveOC you can get are 130%, most users can't put in more than 120%.
Thank you dark_knight35, I will have yet another look at the LiveOC guides kicking about (Glitch's one for example) and see if I can make more sense of it.
But what you say about the voltages on a step after LiveOC is truer than true... can't believe I didn't see it! But I was getting proper annoyed :/
Do you (or anyone) know if there is a kernel out there for ICS that doesn't use LiveOC? And instead just OC's the CPU and or GPU like Glitch 13.1 did for CM7?
Again, thank you
What kind of success/failure are people having with overclocking and undervolting?
I'm doing this through ROM Toolbox Pro. Is there a better way? I'm a n00b with some of this stuff.
I have the phone overclocked to 1200mhz and all cpu levels are undervolted by 100mV.
Im doing so to get more performance, and better battery life. Just wondering what settings everyone else is using.
Also I'm using CM 10.1, with the BlueMint Theme.
Sent from my Samsung Captivate/JB CM 10.1 via Tapatalk.
DR650SE said:
Just wondering what settings everyone else is using.
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Every phone has different limits. It's just like PC overclocking, no two CPU/MB/RAM combos are exactly the same. In general most of Captivates will handle 1200 step OC with default voltages. Not too many will handle 120% live OC though. It doesn't matter what tool you use to OC. All tools try to play with the same kernel settings. In my experience UV saves very little battery but increases significantly the chances to get stability issues. This is why I never play with UV. My particular phone can do 1400 step OC or 1200 live OC with 1350mV. I run it on 1200 step OC @ default. Also, keep in mind that different ROMs/kernels give different OC results.
RE: undervolt
I agree with Val D that undervolting will not show any significant benefits. Overvolting has helped me with stability while overclocking. I use the free Voltage Control app for voltages, or the free NStools app. Rom Toolbox is a great app too- I use it for many other things- stick with what works for you. Currently I am running at 1200Mhz step, at 120% Live OverClock to get CPU up to 1440Mhz, and ARM voltage of 1350mV at that 1200Mhz step. Rock solid. Battery life suffers a bit, but I run this way for gaming. Day-to-day regular usage I just set to 1400Mhz step and no Live OC, default voltages. I have run fine in the past at 1500Mhz, no Live OC. Overclocking the CPU tends to make my phone a bit snappier and more responsive. A big battery drain that affects my phone is an app such as Gmail running in the background, or leaving wifi enabled when not in use. Setting the phone to Airplane mode has been a big battery helper too (I do not make any voice calls on this phone anymore). Governor and scheduler setting can also have a big effect on battery life. I searched for this post I made a while back that linked to two great articles on studies of battery life and voltages, and ended up reading through them again:
http://forum.xda-developers.com/showpost.php?p=28141250&postcount=1194
Great information. Edit: just figured out how to link articles in my signature.
Thanks guys. I know each one over clocks differently. Just looking for some rough outlines. Thanks for the links. I'll be reading up on those. I have extensive computer over clocking experience, but on e phone its a whole new ball game. Basically trying to make this phone last longer.
I'll have to learn what live OCing is vs step OCing.
Thanks again!
Sent from my GT-P3113 using Tapatalk HD
I just do 1200mhz OC using CyanogenMod 10.1 - the option is in the performance menu. So far no problems.
PxGold said:
I just do 1200mhz OC using CyanogenMod 10.1 - the option is in the performance menu. So far no problems.
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Awesome. Didn't even realize that as there. I've been using ROM Toolbox to OC to 1200MHz.
Sent from my Samsung Captivate/JB CM 10.1 via Tapatalk.
overclocking to 1200 mhz will made any difference ?
Klitoni said:
overclocking to 1200 mhz will made any difference ?
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I really didn't notice much of a difference in speed or responsiveness using CM 10.1.