what is the purpose of changing the GHZ in cpu?
i dont understand this bit
can someone explain please
cheers!
Its to overclock or uderclock,or both,depending on the kernel,with a custom kernel,you can select between different options of cpu speed,and put some profiles,like when you have your screen off,charging via usb or ac,and many more.
the pros: you can have a faster phone,with the right settings,and if the kernel has underclock settings you can improve your battery life using less cpu,
the cons: at maximun speed you can damage your chip,if you use it to much time.(maximun speed is more to show off,cause it improves your benchmarks)
so is up to you what settings result better for your phone,and of course it also depends if your are a heave phone user.
cheers!
Related
call me a noob but i gotta ask, just what does the kernals do to the phone thats so special, and all the ghz talk means what. i rooted my device for the teather and customizing, and now i see all this talk of kernal this, overclock that, and different ghz people are getting can someone explain to me what this does for your phone, should i be interested???
popcorn kernals?
the higher your ghz the faster your phone is.
overclocking is making your ghz higher
and kernals is what allows you to overclock(sorta)
lol dude...you should prob. take your time with customization but ghz is in reference to the speed of the processor. So...theoretically the higher the number the better your phone should perform...t, eoretically lol. Note that with a higher ghz value the worse your battery life will be unless the kernel is written really well. Also the kernel is the code that controls the devices hardware. (brain)
The nice thing is that you can generally play with different kernels without having to wipe and redo your phone. Also, if you really want to play with the various kernels out there you should get setcpu from the market. It let's you set your phone to make use of the processor in an over clocked (OC) application but it can also let you under clock your phone when your not using it, such as when the screen is off. This will help you conserve battery life. But be careful, over clocking can lead to over heating and other problems if you''re not careful
sounds very interesting, hmmm. so in the coming months people could create kernals to acheive speeds to challenge dual core phones
the kernels already are challenging dual core phones. The thunderbolt currently has a 2ghz kernel. The motorola atrix is a 1 ghz dual core... Thunderbolt definately rivals it with overclock kernel
Sent from my ADR6400L using XDA App
A "kernel" is the OS layer that sits between the applications and hardware. So, when an application says "light up LED" it eventually goes through the kernel to do this, most likely by a request/system call.
The speed of a CPU is measured in hertz (frequency). So, a 1 Ghz CPU can perform over 1 billion operations in one second. The frequency can be increased (overclocked). When you do so, this can damage the CPU (most likely due to heat). Heat can also cause the CPU to run efficiently. So, if you overclock too high, you COULD end up running slower than if you had just left it at 1 Ghz. Changing the frequency can also hinder stability.
so with it being so dangerous how do u know what kernal to trust and whats a safe limit in hertz, do u stop at 1.5, because 2ghz sounds like pushing it
This thread is so full of misinformation it is comical. To start, higher clock speed does not always result in better performance.
Secondly, everyone has their own preference. The best bet is to find the perfect balance for your needs. For many people, overclocking the CPU is not very beneficial... since the device is already plenty fast at stock 1GHz speeds. A lot of users would rather use custom kernels to make their device more power efficient and use SMARTASS governors and lower voltages.
Mess around with kernels and see what you like the best! (always remember to create a backup before flashing... this allows you to easily revert back if something goes awry).
You mean they're not popcorn kernels?? Lol
bmcclure937 said:
This thread is so full of misinformation it is comical. To start, higher clock speed does not always result in better performance.
Secondly, everyone has their own preference. The best bet is to find the perfect balance for your needs. For many people, overclocking the CPU is not very beneficial... since the device is already plenty fast at stock 1GHz speeds. A lot of users would rather use custom kernels to make their device more power efficient and use SMARTASS governors and lower voltages.
Mess around with kernels and see what you like the best! (always remember to create a backup before flashing... this allows you to easily revert back if something goes awry).
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Very well written and informative post, thanks brah!
skinien said:
A "kernel" is the OS layer that sits between the applications and hardware. So, when an application says "light up LED" it eventually goes through the kernel to do this, most likely by a request/system call.
The speed of a CPU is measured in hertz (frequency). So, a 1 Ghz CPU can perform over 1 billion operations in one second. The frequency can be increased (overclocked). When you do so, this can damage the CPU (most likely due to heat). Heat can also cause the CPU to run efficiently. So, if you overclock too high, you COULD end up running slower than if you had just left it at 1 Ghz. Changing the frequency can also hinder stability.
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+1 ninja point for correctly saying "over 1 billion"
Sent from my ADR6400L using XDA App
It should be noted that most phones are definitely capable of being overclocked to a reasonable extent.
the majority of kernels we nexus one users play with, is undervolting the and playing with teh voltage tables to maximize standby battery life, at the same time overclocking the high end to improve performance. but really its about lowering voltage to improve battery life.
Hello, I have an HTC thunderbolt, rooted with CM7, and installed setcpu and used autodetect and I put the CPU govern to "conservative" with minimum GHz 245 and maximum 1.8GHz and I am just wondering if this is safe? because I read some threads about Compatible kernels and I jave no idea what that means, they were also talkimg about undervolting, which agaim I do not know means, anyways thanks for reading
Watoy said:
Hello, I have an HTC thunderbolt, rooted with CM7, and installed setcpu and used autodetect and I put the CPU govern to "conservative" with minimum GHz 245 and maximum 1.8GHz and I am just wondering if this is safe? because I read some threads about Compatible kernels and I jave no idea what that means, they were also talkimg about undervolting, which agaim I do not know means, anyways thanks for reading
Click to expand...
Click to collapse
If your device will run reliably at 1.8GHz, then there's not much to worry about as long as the voltage isn't too high. High voltages and heat can shorten the SoC's life or kill it altogether. Generally, I don't recommend running that fast because the performance increase isn't as great from 1.6GHz to 1.8GHz as it is from 1.41GHz to 1.6GHz. These cores weren't meant to run any faster than 1.5GHz really, and anything past that doesn't increase the performance as much as the numbers might suggest.
Also, a conservative governor probably isn't ideal if you're willing to run a device that fast. That governor would seldom, if ever, use that kind of speed. I'd suggest smartass, smartassV2, ondemand, or interactive if you're looking to see a good boost in performance.
If you're looking for an app to view and adjust voltages, IncrediControl works well. For all the nitty-gritty of overclocking, I'd recommend reading my OC guide. It's in the "Second Post" of my Q&A thread. If you've got any questions, feel free to hit me up.
So does over clocking just speed things up? What are the real benefits
Boggus said:
So does over clocking just speed things up? What are the real benefits
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I look at it like this. My screen eats up most of my battery. The less time it's on, the better. Overclocking uses more power for the CPU, but the display spends less time telling you it's waiting. It doesn't really add functionality, just speed and efficiency.
Hey guys,
i know that there was an overclocked kernel for GB, just curious if any developers are planning on coming out with an updated kernel for the View Honeycomb that will support overclocking....now with HC we can really push these things to the limit and get the most out of them.
hasseye said:
Hey guys,
i know that there was an overclocked kernel for GB, just curious if any developers are planning on coming out with an updated kernel for the View Honeycomb that will support overclocking....now with HC we can really push these things to the limit and get the most out of them.
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LeeDroid's ROM has a kernel which allows overclocking.
http://forum.xda-developers.com/showthread.php?t=1406851
You need kennel source first
Sent from my HTC Flyer P510e using xda premium
The CPU usable limit is about 1.8 vs. stock 1.5 Ghz. So you can get a little more, but you have to remember for most of the intensive tasks, its not the CPU.... but the GPU that does the brunt of the work, therefore you might not even notice the difference when the CPU is overclocked. For example your Gt3 game won't frame any faster because the video is rendered by the GPU, not the CPU. The custom kernels also enable some difference CPU governor schemes, which might improve observed performance for some things. All of these things factor into battery usage. In general increased performance means more aggressive use of battery power.
DigitalMD said:
The CPU usable limit is about 1.8 vs. stock 1.5 Ghz. So you can get a little more, but you have to remember for most of the intensive tasks, its not the CPU.... but the GPU that does the brunt of the work, therefore you might not even notice the difference when the CPU is overclocked. For example your Gt3 game won't frame any faster because the video is rendered by the GPU, not the CPU. The custom kernels also enable some difference CPU governor schemes, which might improve observed performance for some things. All of these things factor into battery usage. In general increased performance means more aggressive use of battery power.
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Hey, what about our bragging rights?
We already have the fastest CPU on the market. Do you want to crush and disenfranchise the competition?
I actually would prefer under clocking, undervolting better process management. I want better battery life.
Leedroids, custom kernel , and others, allow for under or over and also for precise voltage adjustments at each speed. Other ways to get better battery are various governors that are less aggressive than the performance governor. Check the Leedroid and other treads for more info. Of course the biggest power eaters are the display and the GPU, if you are doing video or games the GPU will consume a lot and there is not much to can do with that. Display on eats battery, you can reduce brightness to help.
Ok i searched google and here but didnt find a decent answer..
its just noob questions but i hope you guys could give me simple answers..
1. apart from getting better battery life, what's the difference between 1.2ghz with no undervolt and 1.2ghz with, let's say, -50mv undervolt?? what's the advantage/disadvantage?
2. what's better for performance/battery, 800mhz no undervolt or 1.2ghz with -50mv undervolt?
3. what's the gpu for? is it for games only?
4. is the cpu or gpu which controls the browser, i mean for rendering web pages/images/videos? for example, if i set the gpu to the lowest possible tweaks and underclock it will it affect how fast the browser render pages?
I hope you bare with me, it's been a really long time i want to ask these and find answers..
Tricks25 said:
Ok i searched google and here but didnt find a decent answer..
its just noob questions but i hope you guys could give me simple answers..
1. apart from getting better battery life, what's the difference between 1.2ghz with no undervolt and 1.2ghz with, let's say, -50mv undervolt?? what's the advantage/disadvantage?
2. what's better for performance/battery, 800mhz no undervolt or 1.2ghz with -50mv undervolt?
3. what's the gpu for? is it for games only?
4. is the cpu or gpu which controls the browser, i mean for rendering web pages/images/videos? for example, if i set the gpu to the lowest possible tweaks and underclock it will it affect how fast the browser render pages?
I hope you bare with me, it's been a really long time i want to ask these and find answers..
Click to expand...
Click to collapse
1)If you undervolt the CPU Core(s) gets less power, which is better for battery life, but maybe will decrease performance @ this CPU step
2)Performance: for sure 1.2Ghz (800Mhz is less than the Galaxy S )
Battery: you have to find out yourself which Kernel/ROM/CPU-config fits best for you!
3)The GPU is for everything grafical in some way (especially for Games etc.)
4)Maybe...
I really don't know but I don't think only the GPU "renders" webpages
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BTW: Google is your friend if you search right
Hi everybody.
It would be nice if someone could make Kernel/Rom with possible GPU overclock.
By my knowledge in Xperia P is Mali-400MP with 1 (i find somewhere 2) core fragment with default speed 200Mhz.
In older SGS2 there is Mali-400MP4 on stock 267Mhz.
Is there a way for safe overclock Mali GPU in Xperia P to 267Mhz or maybe 240Mhz?
Best regards
no, not yet, and maybe never.
it will only gives problems (battery drains much faster, phones become very hot etc.)
NovaThor chips are designed for low power consumption, also overclocking the Cpu the heat produced still low.
I think that the biggest problem is the driver of chip and its documentation
mali 400 stock Frequency min 240 max 395. why give problems (except for battery )
http://www.arm.com/products/multimedia/mali-graphics-hardware/mali-400-mp.php
nickholtus said:
no, not yet, and maybe never.
it will only gives problems (battery drains much faster, phones become very hot etc.)
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it will give problems for sure but on some heavy games our phones needs gpu overclock
Overclock only turn your phone to heater and energy eater, no to lamborgini
PS:sry for my bad english
If not overclock, atleast governor control? And I/O too if thats possible?
Is this possible atleast?
taylan08 said:
mali 400 stock Frequency min 240 max 395. why give problems (except for battery )
http://www.arm.com/products/multimedia/mali-graphics-hardware/mali-400-mp.php
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max overclock on my s2's gpu is 520mhz (wid custom kernel) bt it requires 1350mV .. sufficient enough to make a fried omlet...
being an ex xu user.. i have found no game (atleast among what i play) which ran properly on s2 bt not on xu.. extra cores gives better benchmarks real life perfomance is games is almost similar...