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http://forum.xda-developers.com/forumdisplay.php?f=652
I've had my phone overclocked 15% for months now...I pre-ordered and picked it up on June 4th (the day they were released to the public) and it's never been replaced. I rooted it right away using the engineering hboot method, and I immediately went to a rooted stock rom with a kernel that'd allow overclocking the very first time I saw one posted on this forum. I've never been able to run it at anything higher than 1152 mhz, but I've also never had any stability issues at 1152 mhz. I also allow it to go as low as 128 mhz all the time.
Since then I've played with various roms, and various kernels, but the first thing I've done when changing any rom or kernel, is always set the min and max CPU speeds again, and decide which governor to use. I've also always played with the undervolting strategies, from static to HAVS, and I've always been able to get away with the most agressive stuff posted without any stability issues.
Your mileage may vary, but thats been my experience with an overclocked Evo. I will admit I can barely notice the performance difference from 998 mhz to 1152 mhz, but I actually notice a battery life improvement...get it done faster so the CPU can go back to idling at a low frequency as soon as possible mentality I guess.
please watch what you say here. its not going to get you any help to curse and swear at other members. last warning
@MikeOD, which governor and what governor parameters have you found to work best for you?
I think the whole overclock boils down to what you do with your phone. If nothing overly cpu intensive, then there's likely to be little gain in the amount of saved time.
I actually have mine under clocked at 921 Mhz (came that way in the rom initially). UI was fluid enough and everything still seemed to work well/responsive. I get slightly better battery life too. Noticeable in the rate the batt % declines during active tasks (web browsing).
Is this able to be done and if so how do u go about compiling a kernel??
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Yes it is able to be done.
Sent From My Evo Killer!!!
I've seen the 1.8mhz custom kernels over on the EVO SHIFT 4G thread and the stock speed of that kernel is only 800mhz...and if they can push that a whole ghz past its regular operating speed...then I don't think 1.5 or 1.6 would be out of the question...id love to see that (HINT HINT TO OUR DEVELOPERS!! ;-)).
The problem that needs to be overcome with the current 1.4 kernels is that we're already at the top of the voltage specifications for the CPU (per manufacturers dox anyway) to keep the phone stable at 1.4. All chips are a little different - some phones might be stable with less voltage at this freq or others might be able to handle a little more juice. But, we're already at a 40% overclock... How fast do you really need this thing to be?
I personally would not use it if it was overclocked that high. That is to much for it. And the Shift has a different chip in it so it can be different overclock.
Moved to Q&A. And it can be done if you want to fry your phone
Some phones can't even handle 1.2ghz cause of the ****ty silicone on there chips. This includes my phone .
Thomasskull666 as a 1.4ghz kernel released to the public but he has a private kernel at 1.48ghz. He's trying to get a 1.5 for the public. The 1.6ghz we had on eclair was found out to be a placebo cause of error in the coding. With the phone clocked at 1.6ghz it actually ran at 1.0 and the rest of the phone slowed down. It was like those cartoons and you see a man walking at a steady pace but the background was moving at warp speed.
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That just seems too fast for this phone. Personally 1.2 GHz seems fast enough while 1.3 GHz is just a nice little cherry on top in terms of speed.
Okay, so my question is basically how stable is overclocking your g2? I typically keep it at 800 when I use my phone normally, than 1.5ghz for games. I wante d to keep my g2 at 1.5ghz forever.. is that bad?
My battery obviously increases in temp..
I just use 1GH. It's enough for all game now. and didn't see any bad to battery or phone
I've had my DZ for about three weeks now and all this time I've had it consistently overclocked to 1843MHz. At that high of a speed, I had to let the phone cool down after 20 minutes of use.
Just today I flashed pershoot's 1516MHz kernel and noticed no heat issues after ~45 minutes of consistent use (temps < 40C).
I have had my g2 for.... However long they been out. I have always been overclock to at least 1.5 with zero heat issues. I ran 1.8 and even 1.9 for a good long time as well. Those speeds have heat issues ones that required a battery pull a few times because it started heating up faster then i could shut down the phone. If your going to OC at those speeds makes sure you set temp profiles with alarms.
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ARM processors, like our snapdragons, are a lot more forgiving on the overclocking front than what you might find in your desktop, for instance.
I still treat overclocking on my phone like I do my computers, though... setcpu has a stress test built in that you can use if you're curious how "stable" your overclock is. but in my experience, I've found that you can get away with just playing around with it and using the phone normally and seeing how it reacts to different clockspeeds.
right now, I run it at 1.1ghz (24/7). I have run it at 1.5ghz (24/7) in the past for PSX/N64 emulators, but I've found with my new setup (pretty light; no widgets, very few things going on in the background, stripped as many unnecessary apps as possible, and not using any animations or fancy bits) that 1.1ghz is more than enough to be able to play the games I play on any emulator smoothly.
you should be fine at any speed that is currently available in the overclocking kernels we have with the exception of flippy's 1.9ghz kernel, which does require some monitoring to keep things cool and stable. but it still does vary from phone to phone. if you're running at 1.5ghz and the phone isn't doing anything wonky, then you shouldn't worry about it. if you're running it at 1.5ghz and you're experiencing stability issues, random force closes that aren't fixable through conventional methods, or heat issues, you should probably back off a bit.
some people have problems at 1.2ghz, some people are running at 1.9ghz all the time and never have problems... just find what works best for normal usage with your device and go with it.. it's not like we keep these things for more than a couple of years anyway, and the processor will be capable of handling the [stable] overclock for that period of time.
im always at 1.2ghz. 768 as min, interactive gov (when i use CM7) and battery has been fine, havent noticed any major issues. hard to tell if it was the rom bugs or OC being the issue but from what i read all my issues others have at various speeds so im guessing it was rom related
i think it depends on the rom.
when i use the Pyromod rom i dont need overclock but for other roms like sense roms those I require OC. I always keep it at 1400 when needed.
I have a og evo I want to know why when I overclock to 1.2ghz it freezes my phone why does it do that ?
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Each Evo is different. Some of them can't handle that high overclock, or can't be undervolted very low. Each one is different, each has its limits.
I don't understand the big deal with overclocking. It burns your battery faster. I personally underclock, with little to no lag and is good enough for my casual gaming needs
Mine doesn't like a clock much at all. I can get about 1.1 before it starts locking up but even then it hangs a lot. I honestly don't see a difference from 1.0 to 1.2. Get a decent rom, good kernel and try out the v6 script an I almost guarantee you will like that better.
beaumontcali48 said:
I have a og evo I want to know why when I overclock to 1.2ghz it freezes my phone why does it do that ?
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Well for us to be able to help you, you would need to provide us with more details on how you are trying to accomplish this.
I use no frils cpu but have also tried setcpu and viperMOD I know that's the best way to overclock but is very confusing. Have any step by step instructions to of to 1.2 I know having higher voltages helps as well.
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Overclocking is overrated. If you need to overclock for every day usage, then something is wrong - at least in my opinion. Resource intensive gaming is different, but you shouldn't need to overclock for browsing, texting, casual games, etc.
Try out the V6 Supercharger script. I'm not currently using it, but have in the past and it seemed to make my phone more snappy. A lot of people swear by it and it's a great script, definitely worth a shot. There are other things you can do to speed up your phone without overclocking. I'd try other options first since overclocking will chew through your battery. Increase the dalvik vm heap size, there are plenty of free apps on the market to help with this task. Uninstall apps you don't use, I'll bet that you never use some of the apps on your phone. Back them up with Titanium Backup and you can restore them if you ever need them again.
In case you didn't already know, the Evo can't overclock past 1.2, I'm not 100% sure why - it has something to do with the processor.
Supersonic Evo 4G | MIUI | Tapatalk
I never oc over 1075 and only when plugged in if i play a game I need to oc.for I just activate my charging profile and plug up and play 1.2 ghz is a good chance of doing serious.damage as these older scorpion processors get very very hot at that clock speed so they lock up to try and protect themselves from heat damage or they shut down the phone 1075 is as high as you should need to go for any games the evo can handle on the subpar gpu
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beaumontcali48 said:
...also tried setcpu and viperMOD I know that's the best way to overclock.
..
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I'm pretty sure viperMOD is more for undervolting than overclocking, which are not suppose to be combined together. I am running vipermod with max voltages - 50. Other nite was playing snes9x and was getting some lag with a game so I bumped max CPU up to 1.2. Phone went into a bootloop and had to superwipe and reflash everything. Don't know if its b/c vipermod + 1.2 CPU or just bumping up CPU. Didn't try it again.
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shift
Get a shift. Mine runs fine at 1.9. But usually run it art 254-1200 on demand.
{ParanoiA} said:
I'm pretty sure viperMOD is more for undervolting than overclocking, which are not suppose to be combined together. I am running vipermod with max voltages - 50. Other nite was playing snes9x and was getting some lag with a game so I bumped max CPU up to 1.2. Phone went into a bootloop and had to superwipe and reflash everything. Don't know if its b/c vipermod + 1.2 CPU or just bumping up CPU. Didn't try it again.
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You can overclock and undervolt together just fine. You just need to ensure that every frequency has a high enough voltage to run the processor at that step. My Evo is overclocked and undervolted just fine, although IIRC I can only push it up to 1.1 GHz . My tablet is 1ghz to 1.6ghz and is undervolted as well, though.
merge rls 2.0, iron monkey, Droid overclock because of the profiles options. I set up four profiles including one for temp. sometimes i'm underclocking and sometimes overclocking but only up to 1.19 to prevent freeze and boot loops. Only downside is right at open Droid overclock needs su permission but that is my choice since profile changes at open.
Very snappy afterwards.
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When I had the 4G, I was never able to go above 1118, or somewhere around that. It would have freezing issues.
On my evo shift, I was able to do 1.7 gHz (compared to stock 800 mhz) ok. 1.6 pretty reliabily, and I could run 1.5 all day long. Some guys could do 1.9. It just depends on the phone.
Actually overclocking and undervolting is counter-productive. What you should do, is read carhaulers and ropodopes guide over at vaelepak. Its give some good useful info about how to set up a good aosp rom. I'm underclocked, undervolted, and still getting 1400+ benchmarks. Check it out bro. You'll love the results.
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tommy0823 said:
Actually overclocking and undervolting is counter-productive. What you should do, is read carhaulers and ropodopes guide over at vaelepak. Its give some good useful info about how to set up a good aosp rom. I'm underclocked, undervolted, and still getting 1400+ benchmarks. Check it out bro. You'll love the results.
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Shoot the brutha a link
TrevE Supporter!
tommy0823 said:
Actually overclocking and undervolting is counter-productive. What you should do, is read carhaulers and ropodopes guide over at vaelepak. Its give some good useful info about how to set up a good aosp rom. I'm underclocked, undervolted, and still getting 1400+ benchmarks. Check it out bro. You'll love the results.
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What? Overclocking and undervolting are two completely different things, and they aren't mutually exclusive. Unless you can provide a good reason as to why it's counter productive to do both, I don't buy that at all. Just checked my phone, my overclock requires an extra 25 mV for all three steps I've overclocked. 25mV isnt much, and it certainly isn't going to kill my battery that much faster.
Besides, the only time the CPU is going to be entering these high power modes is when it needs to do work, and it's better to do work as fast as possible to go back to sleep. Would you rather wake up, do a mundane task for 5 minutes, then go back to sleep or wake up, do a task at 2x the speed while only consuming 30-50% more energy, then going back to sleep after only 2.5 minutes?
HUGI is real.
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Yea shot me the link too bro.
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First let me say I don't use viper mod or any voltage controlling mod.
On sense 3.0 roms such as mikg I over clock to 1152 and set the minimum to 384 and its smooth as butter. No problem and battery lasts all day.
On aosp however such as decks (I'm on it now) I underclock to 499 and leave the min at 254. Smooth as always and battery lasts forever.
Anything past 1152 is going to cause problems (at least in my experience) also the rom/kernel can effect how much you can overclock.
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Gary13579 said:
What? Overclocking and undervolting are two completely different things, and they aren't mutually exclusive. Unless you can provide a good reason as to why it's counter productive to do both, I don't buy that at all. Just checked my phone, my overclock requires an extra 25 mV for all three steps I've overclocked. 25mV isnt much, and it certainly isn't going to kill my battery that much faster.
Besides, the only time the CPU is going to be entering these high power modes is when it needs to do work, and it's better to do work as fast as possible to go back to sleep. Would you rather wake up, do a mundane task for 5 minutes, then go back to sleep or wake up, do a task at 2x the speed while only consuming 30-50% more energy, then going back to sleep after only 2.5 minutes?
HUGI is real.
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Its counter productive because it is giving less to something that needs more. (Don't take this post as me trying to be a ****. Just voicing how someone explained it to me a while ago)
Think of this as cars.
Lets say you have a nice fancy v8 mustang. Stock, everything is well, balanced.
If you start adding parts and get it pushing out 1000 horsepower (overclock) your most likely gonna need more feul (voltage) or at least stock amount flowing into the engine just to keep it running.
Now lets say you got that same 1000 horsepower gas destroying mustang and you start to lower the amount of gas flowing into the engine (undervolt (done in vipermod)) cylinders (CPU) wont get enough gas, it wont work, and your stuck going no where.
So if that made sense (did to me) then you can see why they are counter productive. Unless your using vipermod to overvolt (which idk if you can since I don't use it) then you can disregard this whole post
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Your car analogy is completely irrelevant. You can look up the exact voltages that the CPU runs on at every frequency, *even when overclocking*. Overclocking an Evo 1ghz to 1.2ghz takes maybe a 5% bump in voltage, and that 5% extra power is only going to be used *when the CPU is running at max speed* (which is only when there is a lot of work to do), and even then, it's *still better to let the CPU run at max speed with a tiny bit more power consumption than to cap the CPU at a slower speed and make it work for even longer*. Intel calls it HUGI, Hurry Up and Get Idle.
I know what I'm talking about, and I wish people would stop trying to argue with me based off of second hand speculation. I do this for a living, after all. There is absolutely nothing wrong with overclocking and undervolting, and it's the best way to get the most battery life *and* performance out of your phone, period.
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Gary13579 said:
Your car analogy is completely irrelevant. You can look up the exact voltages that the CPU runs on at every frequency, *even when overclocking*. Overclocking an Evo 1ghz to 1.2ghz takes maybe a 5% bump in voltage, and that 5% extra power is only going to be used *when the CPU is running at max speed* (which is only when there is a lot of work to do), and even then, it's *still better to let the CPU run at max speed with a tiny bit more power consumption than to cap the CPU at a slower speed and make it work for even longer*. Intel calls it HUGI, Hurry Up and Get Idle.
I know what I'm talking about, and I wish people would stop trying to argue with me based off of second hand speculation. I do this for a living, after all. There is absolutely nothing wrong with overclocking and undervolting, and it's the best way to get the most battery life *and* performance out of your phone, period.
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Hmm, *interesting*. I believe the best answer to the OP was covered rather well earlier. It's all about your rom/kernel/hardware combination. With all the variables to consider as relevant, your best bet is to experiment and find what works for your device. Don't check set on boot untill you are confident the set-up is stable. Higher is not always better with overclocking. My device runs blazingly well underclocked @768max. Gets insanely great battery @499max. However my quadrants are better @ 1036 than at 1190.
Great thing about android is you can experiment and learn through trial and error.
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Hello everyone,
I am using many different roms since i have my desire z rooted.
The only problem is:
i can overclock to about 1 ghz... everything above it results in a freeze were my screen stays awaken.
Does anybody know what i'm doing wrong?
You can try different governors, and others may have some other tips. But its also possible that 1 GHz is all your CPU can handle. Not all CPUs are created equal. Far from it, in fact. There is a reason why CPUs are rated for a certain clock speed, in our case 800 MHz. That's the speed that the manufacturer can basically guarantee stable performance. Anything higher than that, and all bets are off. The manufacturing process has a huge amount of variability to it. So to see some people getting stable performance at 1.5 GHz, while you might not get over 1 GHz with the same series of chip, is not a big shock to me.
What roms are you using?
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I have heArd that CPUs of the same phone can perform different. Mine will run all day at 1.8ghz while others get reboots and freezing when they go over 1-1.2 GHz. It really don't make sense to me but I guess it happens. Just glad mine will take whatever the kernel frequency sets allow lol.
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selfinflicted1 said:
I have heArd that CPUs of the same phone can perform different. Mine will run all day at 1.8ghz while others get reboots and freezing when they go over 1-1.2 GHz. It really don't make sense to me but I guess it happens. Just glad mine will take whatever the kernel frequency sets allow lol.
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The manufacturing process for any type of CPU is quite variable. They can target a range of clock speeds, but can't efficiently manufacture all the chips at the same exact performance. CPUs actually get testing after manufacturing to determine the clock speed, and are "binned" into various categories based on how they tested. If a CPU doesn't meet the test specs for a certain clock speed category, it will be dropped to the next one down. Its also based on market demand. It completely possible a high performing chip gets labelled and sold as a lower performing one, simply to meet demand.
using the andramadus rom i can get well over 1.5ghz completely stable. you should try that