Hi guys, like I said in the title, is it because the phone is not doing heavy tasks? And will the cpu ever run at 1Ghz at all?
just being curious...
Interesting... mine's showing 400mhz (idle). afaik those chips should run @ 600mhz when idle, not 400mhz.
I presume that you can ignore that, as long as your stock firmware (unrooted/unlagfixed) gives you a result of 900(~).
ye it'll run at 1GHz if you're not using any overclocking kernal along with SetCPU. it's on a "on-demand" governer that basically uses more CPU juice as more CPU heavy tasks are carried out.
Has anyone underclocked their Galaxy S? I personally think that overclock is a bit of a placebo effect so I just want to know if anyone has underclocked their phone and if they can kindly share the performance of the phone as well as some benchmarks.
I've seen SGS2 underclocked right down to 500mhz and still running smooth but is that due to the efficiently of the Cortex A9 or because it's dual core?
Feel free to share your experiences and benchmarks.
Notorious544d said:
Has anyone underclocked their Galaxy S? I personally think that overclock is a bit of a placebo effect so I just want to know if anyone has underclocked their phone and if they can kindly share the performance of the phone as well as some benchmarks.
I've seen SGS2 underclocked right down to 500mhz and still running smooth but is that due to the efficiently of the Cortex A9 or because it's dual core?
Feel free to share your experiences and benchmarks.
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Click to collapse
I think we may achive smooth performance with some minor glitch at 800MHz and some minor improvement in battery.
But i dont see a point in underclocking,1GHz is just perfect for galaxy s.Moreover whats the point of buying so costly device and then underclock it???
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Lol i underclocked mine to 100 mhz but it dont run good at all. Ur phone is not running a gig all the time if it did ud loose use up ur battery in like 4 hours, it goes from 100 to 1000 mhz whenever it needs it, you can potentially set it to 400 and it will function but the battery saving wouldnt be that much, i think the screen takes at least half of your battery, since my phone on standby can do like two to three days and i can also kill it in 4 hours playing a game or using gps or surfing the web if anything underclock ( they call it undervolt) to 800 mhz and you will barely notice, your score on the benchmark is affected because most phones gpu is directly controlled by the cpu so undervolting will affect your fps which will give you laggy games or crappy benchmark scores
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Stock is best try miui it runs really smooth on sgs
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I actually Overclock it to 1.2..
I overclocked it to 1.2 and undervolt the from 800-1.2 -50mV
it was stable.. but then i undervolt -100mV from 100-200Mhz and my SGS crahsed..
I use semaphore 1.3.3... lol any idea what settings i should use ? xD
B-Ace said:
I overclocked it to 1.2 and undervolt the from 800-1.2 -50mV
it was stable.. but then i undervolt -100mV from 100-200Mhz and my SGS crahsed..
I use semaphore 1.3.3... lol any idea what settings i should use ? xD
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Click to collapse
UV in 25mV steps. Don't just try UV'ing 100mV straight away.
Hello guys. I just want to take information that there are many tweaks to overclock galaxy s3 to max 1.8 ghz. If we set to maximum overclocking then is there any risk for damage hardware? Because 2 months before i had nokia n8 & i set this device to overclock & it damaged all board,now its totally destroyed. According to my point of view,sometime i think that nokia n8 has only 680 ghz & due to overclock it run on higher clock speed & so that due to low processor it could not manage or handle the higher clock speed & it ran on heavy clock speed continuesly then overload of processor it got damaged. It is my fear for s3. And i think for s3 that it has higher processor with 1.4 ghz,if i set it to 1.8 ghz then there is no risk bcoz of there are cpu governor. With this,the s3 does not run continues on 1.8 ghz higher speed, governor takes control over the cpu to run on higher clock speed according to their high usage like 200 ghz, 500ghz, 800 ghz, 1.4ghz & so on. So i think i can overclock my galaxy s3 with kernel but I'm still confused & I'm not expert. So plz suggest me to do overclock without any damage fear. Thanx a lot.
If you don't know what you are doing, then don't do it!
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sfjuocekr said:
If you don't know what you are doing, then don't do it!
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Click to collapse
If i don't but you know then u can tell me about any risk.
NOTHING is without risk, but a good place to start is just to install the latest Siyah S3 Kernel and run it it at 1.6ghz for the CPU and default settings for the GPU. I tried running my CPU at 1.7 and 1.8 and the it wasn't 100% stable and the temps were to high for my liking. Be moderate in your settings and you shouln't encounter any issues.
http://www.gokhanmoral.com/ latest version is 1.7rc1
That will give you a good performance bump with the minimum of risk (in my opinion).
Other than that installing a bloatware free ROM will also give a nice bump. I personally run Omega V29 with the above 1.6 overclock settings and it lightning fast. :good:
There is always a risk involved in overclocking.
1.8ghz isn't stable for most people but 1.7 is quite stable.
How well your device handles overclocking depends on the quality of the chip you got.
This is down to the manufacturing process, you may get a good chip from the middle of the wafer or a not so good one from nearer the edge.
if you want to reduce heat them you should undervolt the CPU, less current means less heat.
Obviously it isn't good for the hardware in the long run but that's what you gotta take into account when you overclock, I've overclocked every phone I've ever had and haven't had any problems but YMMV.
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nodstuff said:
There is always a risk involved in overclocking.
1.8ghz isn't stable for most people but 1.7 is quite stable.
How well your device handles overclocking depends on the quality of the chip you got.
This is down to the manufacturing process, you may get a good chip from the middle of the wafer or a not so good one from nearer the edge.
if you want to reduce heat them you should undervolt the CPU, less current means less heat.
Obviously it isn't good for the hardware in the long run but that's what you gotta take into account when you overclock, I've overclocked every phone I've ever had and haven't had any problems but YMMV.
Sent from my Nexus 7 using xda premium
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Click to collapse
could u plz tell me that what is the process of undervolt if i undervolt the cpu then it is related to only heat or performence also?
If you use siyah kernel then in the stweaks app that comes with it you can choose how much you want to undervolt.
I suggest starting with -25mv or -50mv and check stability.
I use -100mv without problems but like in said earlier YMMV.
It doesn't give a performance boost per se, but less heat in the chip will mean that it doesn't hit the temperature throttle threshold as easily and that means more performance.
The CPU will begin to throttle (limit clock speed) at around 75c until the temp drops and the CPU is allowed to run at max clock speed again.
Usually you will only hit the temp throttle threshold under very heavy loads, for example repeated benchmarks.
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mrjoy said:
Hello guys. I just want to take information that there are many tweaks to overclock galaxy s3 to max 1.8 ghz. If we set to maximum overclocking then is there any risk for damage hardware? Because 2 months before i had nokia n8 & i set this device to overclock & it damaged all board,now its totally destroyed. According to my point of view,sometime i think that nokia n8 has only 680 ghz & due to overclock it run on higher clock speed & so that due to low processor it could not manage or handle the higher clock speed & it ran on heavy clock speed continuesly then overload of processor it got damaged. It is my fear for s3. And i think for s3 that it has higher processor with 1.4 ghz,if i set it to 1.8 ghz then there is no risk bcoz of there are cpu governor. With this,the s3 does not run continues on 1.8 ghz higher speed, governor takes control over the cpu to run on higher clock speed according to their high usage like 200 ghz, 500ghz, 800 ghz, 1.4ghz & so on. So i think i can overclock my galaxy s3 with kernel but I'm still confused & I'm not expert. So plz suggest me to do overclock without any damage fear. Thanx a lot.
Click to expand...
Click to collapse
1.7ghz should be alright for a 32nm chip like the exynos 4412 on our s3. HTC has had their One S (with a 45 nm chip) clocked at 1.7 ghz. The lower the nanoneter, the more ambitious you can be with clock speeds. Try 1.6 or 1.7 ghz with default voltage settings and see how that goes
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nodstuff said:
If you use siyah kernel then in the stweaks app that comes with it you can choose how much you want to undervolt.
I suggest starting with -25mv or -50mv and check stability.
I use -100mv without problems but like in said earlier YMMV.
It doesn't give a performance boost per se, but less heat in the chip will mean that it doesn't hit the temperature throttle threshold as easily and that means more performance.
The CPU will begin to throttle (limit clock speed) at around 75c until the temp drops and the CPU is allowed to run at max clock speed again.
Usually you will only hit the temp throttle threshold under very heavy loads, for example repeated benchmarks.
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Click to collapse
You are using -100 undervolt, that mean its high current & mean if i select 25 to 50 then its less current than 100??? & is there any battery improvement if i select less current mean less heat.?
I am using -100mv, as in minus 100mv, 100mv less than stock.
Less current is less heat and *maybe* battery savings.
-100mv is less current than -50mv.
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nodstuff said:
I am using -100mv, as in minus 100mv, 100mv less than stock.
Less current is less heat and *maybe* battery savings.
-100mv is less current than -50mv.
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Click to collapse
I am new to all this just one question, will over clocking drain the battery quicker?
andmax66 said:
I am new to all this just one question, will over clocking drain the battery quicker?
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Click to collapse
Yes atleast while it's using the higher clock speeds.
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What's a good kernel for overclocking for the stock I9300 running ICS (don't have the JB yet)? Will the latest Siyah work?
DenethorLenwion said:
What's a good kernel for overclocking for the stock I9300 running ICS (don't have the JB yet)? Will the latest Siyah work?
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Click to collapse
siyah, its most beginner friendly wih stweaks (for ICS you should check 1.5 version if its still obtainable, however should be)
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Antutu and Quadrant, all are just bull****. Just to see their manipulated scores, overclocking does not make any sense.
At ground level, applications do not run anything faster as overclocking alone does not work here. Even if you get milli milli milli second improvement which is just nothing against damage of CPU.
Got it?? now start using your phone as it should be and made for.
Before overclocking you should ask yourself Why you want to overclock. If it's because the phone have some lags there is other(safer) way to solve this problem. Honestly I overclock mine for a while (just because I'm a tester) but the S3 is fast enough for everything. You should see my S3. The app drawer appears (almost) instantaneously. Any games play smoothly etc...
On this phone overclocking is possible but useless. If you want to learn how to overclock just to learn how, search in the stickies for the overclocking guide.
I have tried overclocking and undervolting for the last week now and I can say that overclocking has not made any visible difference to my S3. Overclocking seems to be a nice option to have, but the S3 does not need it. Undervolting on the other hand reduces lag considerably when playing games for long periods. Usually my S3 started to get laggy after about 1 hour of Asphalt, but now it does not get laggy at all. I have undervolted by (-)125.
Hope that helps.
When I play pokemon black 2 on nds4droid without overclocking it gives me 20 to 30 fps and when I overclock it to 1.7 GHz i get 28 to 35 fps
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Firstly you need a kernel supporting overclocking... Secondly its fine if u wanna play around with your device... Lastly I would suggest u to overclock it to 1704 MHz max (avoiding any boot loops )....
I would recommend Siyah 1.9.1 (as your Kernel) and "Noop" as your I/O Scheduler... In case ure using Siyah as your Kernel, try using "Lulzactiveq" as your governer...
Furthermore u can tweak the governer if u want more juice out of it....
Try it.....
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---------- Post added at 10:50 PM ---------- Previous post was at 10:41 PM ----------
Mr Faeces said:
I have tried overclocking and undervolting for the last week now and I can say that overclocking has not made any visible difference to my S3. Overclocking seems to be a nice option to have, but the S3 does not need it. Undervolting on the other hand reduces lag considerably when playing games for long periods. Usually my S3 started to get laggy after about 1 hour of Asphalt, but now it does not get laggy at all. I have undervolted by (-)125.
Hope that helps.
Click to expand...
Click to collapse
Lag can be reduced by tweaking your governer and some other settings... U don't have to underclock it...
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I have tried overclocking to1600, and although Quadrant stats are higher, I did not notice any difference in normal usage. I am a general usage text and phone calls and email user. Minimal game playing. I stick to 1400 now and everything seems just the same!!
At the moment I am running Sotmax rom and boeffla kernel.
Hope this helps.
I'm using system tuner for cpu temps. Seems to be the most accurate reading.
My current kernel can OC to 1.6 GHz but temps get around 62c. On stock 1.3 GHz its gets to 52c max.
Trying to figure out what is safe before I mess with it any more.
Gloserous said:
I'm using system tuner for cpu temps. Seems to be the most accurate reading.
My current kernel can OC to 1.6 GHz but temps get around 62c. On stock 1.3 GHz its gets to 52c max.
Trying to figure out what is safe before I mess with it any more.
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Click to collapse
I overclocked it to 1.6 GHz too and I have to say that you don't have to worry about this. With the Trinity Kernel, for example, you can OC it up to 1.7 GHz. These values were tested, so they are stable and safe.
Gloserous said:
I'm using system tuner for cpu temps. Seems to be the most accurate reading.
My current kernel can OC to 1.6 GHz but temps get around 62c. On stock 1.3 GHz its gets to 52c max.
Trying to figure out what is safe before I mess with it any more.
Click to expand...
Click to collapse
max safe temp fot the nexus 7 is 100C. if you do reach 100C, there is a safety mechanism in place that will shut down your cpu. but before you even reach the 100C safety shutdown, you will reach the throttling temperature. it will lower your cpu safety, regardless of what you have it set to, to cool down your cpu. i think the default(stock) throttle temp is between 70-80C, i dont remember. but all the custom kernels have the throttle temperature set to what the developer wants, some higher, some lower.
62C is well within safety range, and within normal range for 1.6ghz. itl go even higher when the device is being pushed. i habe reached safety shutdown on many many occasions, usually when pushing the device very hard and intentionally at a raised cpu speed. ive also reached it while playing intensive games, for long periods, and overclocking my gpu. and thats another way to raise heat, overclocking the gpu. even slightly overclocked, the gpu can affect the cpu temperature very much.
Hi there,
Is it possible to overclock the cpu and gpu?
If so how? Or which rom/kernel?
Running G model 4gb ram
Even if you can, it will chew the battery and heat up.
RobboW said:
Even if you can, it will chew the battery and heat up.
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Click to collapse
Not a problem as I would only be using it sometimes not permanently
Kendal21 said:
Not a problem as I would only be using it sometimes not permanently
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Click to collapse
in theory it is, we had a a kernel that OC'd the CPU way back then, but the SoCs on the Axons are probably low-binned - shutdowns and stuff like that are commonplace
But still, do you know what OC does to a phone? New phones are thermally constrained devices, starting from the snapdragon 800 series onwards. remember the sd805/810 disaster? Well...
If you run your phone at 100% load, it will run at max speed (1.56/2.15) for a very short time (say, 30 seconds), until the SoC reaches a specific temperature. After that it'll go down to a more manageable frequency, eventually going even further down or staying at 1.8 ghz, depending on your specific situation (the pink thermal blob might be bad).
That's why VR mode sets your cores at around 1.8 ghz, to keep them from going hot and lowering frequency even more. Sustained performance is better than burst performance on gaming.
Day to day usage is another matter, because more frequency won't mean thermal throttling when opening apps or unlocking the phone, beside the obvious battery usage
TL/DR: Be prepared to make your own kernel if you want to OC. It might not work