Related
Hey there people. I'll be receiving my artemis tomorrow and I would like to get the most out of it. I allready decided on what rom I am going to use. but I want to know how safe is overclocking. I want my artemis to be able to watch movies without to many trouble. I want to play some games (Age of empires, myst, some of those games) and more. I am willing to charge my artemis every night as long as I can do the entertainment as much as I want
So advice please people. To what could I safely overclock and how long will my battery last then?
Mines currently overclocked to 286MHz and has been since I had it (over 8 months usage now). The battery lasts for well over 4 days without a charge with moderate usage but obviously the more calls etc then the quicker it'll go down. Its device dependent but mine physically won't overclok any higher. If I try then it immediately freezes but 286 is spot on with no issues at all. I've known others who couldn't go quite as high but like I've said previously, it depends on your device so give it a bash.
Yeah but it won't be wise to blow my mobile up the first day
Nobody will tell you what is "safe CPU frequency" for overclocking, but I never heard about Artemis owner who damaged device by going to far. I tried about 270 MHz with my PDA for long time, with higher freq. I had to soft reset device, one even hard reset was necessary, but after that everything was working OK. Remember not to set overclocking after reset
Regarding battery drain - I didn't made tests, but with BatteryStatus and "on-demand" overclocking I noticed no big difference - when you play game CPU is oveclocked, but then it may by underclocked.
How safe is overclocking and how does it affect battery life
Hi,
a popular formula to calculate the dynamic power consuption of CMOS ICs is:
P = (1/2)*C*V^2*f (C - Capacitance, V - Supply Voltage, f - Frequency)
As you can see, the frequency is a linear factor in this equation. So if you double the clock frequency, the power dissipation will also double. But the processor does only has a portion of the total power dissipation of your device. So the battery "life time" will not be doubled.
If you choose a frequency that is to high, the device will not work correctly -> bit-errors -> Softreset. This is not serious, but my concern about extreme overclocking are the extrem temperature cycles -> produces a mechanical mismatch -> mechanical failure inside the processor package or printed circuit board. But this is a long term process.
Kind regards,
hqqh
Heya,
I've heard of this SetCPU program, and figured it has some solid potential of saving battery power.
My question is - does it work? I've read several post claiming that SetCPU doesn't work on HTC phones.
If it does - will using the "Mix \ Max frequency" mode will save battery during stand by and normal usage, or just slow down the phone?
Using Rooted Desire, LeeDroid 2.2d.
Its primary use is to overclock the CPU, its secondary use is to create profiles and reduce the clock or change the governor. This will improve battery life slightly but also decrease responsiveness, depending on how far you go.
You'll need root if you want to use it.
To really increase battery life you have to use a custom ROM with an undervolted kernel.
So you're saying that the saving in battery life is insignificant considering the slowdown in performance?
yes, you use LeeDroid which is undervolted, thus perfect conditions.
It also uses a custom governor 'Smartass' which gives you best performance while using it and limits the max. clock while sleeping. That's the most common method to increase battery life with SetCPU while maintaining performance. So no, you don't need SetCPU, LeeDroid handles everything perfectly already.
However, the Desire has a very powerful CPU, compared with other Smartphones. So you can use SetCPU to limit the clock to maybe 700MHz or 800MHz. This will increase the battery life but also reduce the processing power. If you don't play games, don't do a lot of simultaneous things or browsing huge websites, don't use heavy loaded homescreens, it's possible that you don't notice the reduced processing power.
Thanks again
I guess there is no damage to the SnapDragon if I lower clock speeds a bit...
But, if I want to do some overclocking - how far is it safe to go?
When I OC'ed my Q6600 CPU I used the TheremalRight Extreme 120 with two Slip Stream fans to cool it off.. So, will heat damage be a constant threat to an overclocked Desire?
I currently live in Israel, and it's hot as hell even on stock speeds
CoreOxide said:
Thanks again
I guess there is no damage to the SnapDragon if I lower clock speeds a bit...
But, if I want to do some overclocking - how far is it safe to go?
When I OC'ed my Q6600 CPU I used the TheremalRight Extreme 120 with two Slip Stream fans to cool it off.. So, will heat damage be a constant threat to an overclocked Desire?
I currently live in Israel, and it's hot as hell even on stock speeds
Click to expand...
Click to collapse
I for one has chosen to disable the default powersave in Auraxt sense, and then using SetCPU to control it, i get a day of power easily, and still goes to bed wit 50% power, that is with stock clocks on normal usage, but with minimum power (245) on screen off
Re overclocking:
To reach high clock speeds you also increase the voltage on your PC, else you can't increase the frequency that drastically.
Because you can't improve the cooling on the desire you have to keep stock voltages but also can't overclock that much.
The overclocking methods on the desire keep the voltage at stock values or even lower (defrost rom).
I don't know the voltage values for LeeDroid.
I it shouldn't get warmer. In the worst case it will crash and reboot until you reduce the clock speed.
Sent from my HTC Desire using XDA App
hey guys, just wondering will using a lower vsel damage my cpu and/or battery?
i have previously beein using milestone overclock on 1ghz and 60 vsel and am adding setvsel into the mix, also any ideas on starter settings? thanks
also could someone just give me a heads up on what vsel actually IS
I don't believe there are any studies that show effects of long term use of lowering the voltage, which is what you are doing with vsel in order to save battery juice...or you could increase the voltage but that defeats the purpose and also heats up the battery which leads to shorter life span. Many use it without reporting any damage to battery or cpu, I believe it's safe (however, if you are overheating you might fry the battery or cpu, so you'll need to moniter and play with settings to get the desired effect without any overheating issues).
With regards to setvsel, there are reported issues from users with different roms...from what I've read (and you can do your own research to see if this is what you are seeing...this is the conclusion that I've come to by reading a lot of threads), it is better to use milestone to overclock and setcpu to lower the vsel.
With that being said, I've used them all and like setvsel so keep going back to it...but I've been having some issues lately so I've removed setvsel to see if that is what is causing some problems (too early to tell).
Oh, and as for settings...pop on the overclocking/undervolting thread in the development section to see a lot of different settings and remember that what works for one user might not work for you...you'll have to experiment a bit to find your ideal setting.
oh okay i think i might go back to my old settings with milestone overclock and setcpu and just lower the vsel! i was under the impression for some reason that lowering the vsel would heat the battery. Thanks!
I'm no expert to be honest, I'm more of a research kinda person. From what I've researched, undervolting can help keep temps down, and may particularly help when you overclock (as overclocking is stressing the cpu to go beyond it's normal operating design hence it may heat up...supplying it with less power, or voltage, is what helps keep the temps down.
Of course, this is given you find the optimal setting for your phone, and as it seems from reading through these forums, many users have experienced completely different results using the same settings (i.e., one user will have a stable setting without any problems while another user on the same rom using the same settings will have crashes and/or issues like overheating). Doesn't seem right, but it is what it is
yeah ive read through most of that stuff too, i went down to 1ghz at 51 vsel, seeming stable, but i decided to go with 54 anyway
1.1 GHz @ Stock vsel for over a month without any issues...I hope it lasts.
Sent from my MB525 using XDA App
Hi,
I've also read a lot regarding the underclocking 'dangers' but couldn't find anything to prove that there is such an issue. I think that it is an urban myth spread everywhere by people asking if there is a danger with low vsel [but that are never getting a positive answer on it].
The only thing I found using setvSel is that I had to first install Milestone Overclock and load its module prior to start setvsel. There is a way around it, but requires you to copy files in the system folders and change their permissions. I find that my way is much easier.
As far as over-heating goes, it's an overclocking thing; not underclocking.
My Defy is set at 900Mhz and really, I don't see the point of going much higher: everything runs smooth and lag free already.
vsel: 21/300; 32/600; 43/900 - 90% up_threshold
Been like that for about a month now and never experienced any problem at all.
The underclocking is great for saving battery; no exact numbers to give here but it feels like my battery now last 2 times longer. I can easily get 4 days between charges with low/moderate usage and would get to 6+ days "IF" I could stay away from games and having the screen ON for long sessions of browsing/video watching.
I tried SetCpu before but I didn't like the interface; the simplicity of SetvSel is really nice.
i use setcpu for scaling and profiles, and run 18/300, 36/600, 50/1000 stable and smooth as
Undervolting is not a bad thing at all. It means less Watts consumed for running (Watts = Voltage x Amperage), less of your battery consumed.
Ussually companies test a large batch of components and how they react on different voltages and freqvencies, and then they decide for a voltage that works with all components and that is safe for all cases. Eg. when they have different CPU speeds and thus different options for CPU's this is one way to decide which one work at 3GHz and which one at 2.7 GHz (the other one is demand for components).
Phisically you will not have any problems and you can't damage your phone by undervolting, so no problem here, only possible software problems if you go too low.
Advantages :
+ Lower processor temperature
+ Lower phone temperature
+ Longer battery time
+ Longer components life
Disadvantages
- Stability issues (freeze, artefacts, slowness)
maxi2mc said:
Disadvantages
- Stability issues (freeze, artefacts, slowness)
Click to expand...
Click to collapse
You know, I was recording a video and when playing back noticed that there were squiggly lines that went through the video a couple of times (in a two minute clip). This was the first time I saw this...and have recently lowered vsel by 2 on vsel3...could that be the artifacts that you are mentioning?
I just figured it perhaps I was too bouncy with the phone while recording making it glitch...but now that I see this post I'm thinking maybe I undervolted too much...what do you think?
My settings: 54/1000 44/700 28/300
I know what people mean by same settings don't work for every phone even if it's the exact same model. My Defy won't underclock as much as others. I'm using SetVesel, and I've been able to drop 5 points from each, and that's about it before it reboots itself. I only tested undervolting, but I mainly overclock to get as much speed as I can, and give it enough juice to run super fast. I'm current running [email protected], [email protected], [email protected] Threshold at 75%. The highest the temp ever got was 112F, and that was after playing a game for about an hour. Usually it stays below 90F for normal use. I get around 17-20 hours out of it with screen on time at about 3 hours @ 50% brightness. I've been running these settings about a month, and have not had any issues.
If you put something like 100vsel will the phone accept and then burn? Is there any protection? Does anyone know what's the highest acceptable vsel?
Just for curiosity...
im pretty sure 80 is the highest you should EVER use and that'll significantly increase the chances of your phone burning out. @bobbyphoenix you should be able to lower your vsels a fair bit or your really unlucky! i run a lower vsel for 1ghz than u do for 700mhz smooth and stable
stewi21 said:
im pretty sure 80 is the highest you should EVER use and that'll significantly increase the chances of your phone burning out. @bobbyphoenix you should be able to lower your vsels a fair bit or your really unlucky! i run a lower vsel for 1ghz than u do for 700mhz smooth and stable
Click to expand...
Click to collapse
CM7, rather non-technical person here. I seem to have a very happy phone at setvsel settings of [email protected], [email protected], [email protected], 86%. Been running this for the month or so since I rooted and the phone feels like it was made for this config. I've never seen the temp above ~32c. My 2¢.
I am new to android phones. And i have no experience about overclock.
Will my cpu easily break down due to keep overclocking?..
Honestly, i seldom change my cell phone model, i want my defy can stay a life at least 1.5yr.
i think overclocking can't really damage your phone, voltage can. so i suggest you keep the voltage around [email protected] (default is [email protected], so this should be fine), and if the phone doesn't hang or reboot, you're good to go but you could try lowering vsels, you know, the lower the voltage, the lower the power consumption, the heat and the chance to fry your cpu but i'm not sure!
Yep, 1 GHz is safe, I'm using [email protected] as well, and the CPU is capable to run easily at [email protected] continuously. The leaked Gingerbread ROM from Motorola uses 1GHz as well, so don't worry, you just have to find the safe vsel settings.
thanks for replying, i m currently using 1GHz @ 58 .. Everything is alright
Should I make the voltage as low as possible?
yeah, just to lower the power consumption and temperature, but it isn't necessary.
Can you share your voltage setting please..?
I do the stability test and it gets successful run for 5min then this means the setting is okay?
i don't overclock, just undervolt, here are my settings (with setvsel):
800MHz - 45vsel
600MHz - 30vsel
300MHz - 18vsel
up_threshold: 90%
actually if you wanna make absolutely sure your device is stable, you should run it like for an hour. but if it runs for 5 minutes without error that's quite okay, you shouldn't have problems with those settings
Thanks so much, i m trying to lower my voltage setting.
Besides, i want to ask about the battery temperature, what is the maximum temperature before getting damage to the cell? I usually goes up to 37~39 degree celsius.. is it normal?
mine is usually around 29-32 °C, but i have it undervolted, so idk. but 37-39 seems a bit high, that means the cpu temp is way over 40 degrees, you should check it out!
EDIT: tried stress testing for 20 minutes with [email protected], it went up to 35°C, so you should definitely find out what's wrong with your device!
I actually underclocked to 600MHz, since I couldn't see a big difference even at 1200MHz in normal usage. A Pentium3 at 4Ghz will still not perform as well as a slower clocked new CPU for example, CPU design is more important - what instructions it supports.
Battery life is more imprtant to me and heat is very bad for Li-ion batteries too.
Also I found changing the CPU governor to "interactive" made a difference in GUI responsiveness and I have had less stuttering.
nisamtetreb said:
I actually underclocked to 600MHz, since I couldn't see a big difference even at 1200MHz in normal usage. A Pentium3 at 4Ghz will still not perform as well as a slower clocked new CPU for example, CPU design is more important - what instructions it supports.
Battery life is more imprtant to me and heat is very bad for Li-ion batteries too.
Also I found changing the CPU governor to "interactive" made a difference in GUI responsiveness and I have had less stuttering.
Click to expand...
Click to collapse
so, what's your standby lifetime after underclocked cpu?
I can see the performance improved when i was watching flash video on browser. But honestly, i dont think there are anymore huge difference after overclocking..
But as the battery life still remains quite well, i will still keep overclocking to 1GHz.. Isn't it a good idea?
nisamtetreb said:
I actually underclocked to 600MHz, since I couldn't see a big difference even at 1200MHz in normal usage. A Pentium3 at 4Ghz will still not perform as well as a slower clocked new CPU for example, CPU design is more important - what instructions it supports.
Battery life is more imprtant to me and heat is very bad for Li-ion batteries too.
Also I found changing the CPU governor to "interactive" made a difference in GUI responsiveness and I have had less stuttering.
Click to expand...
Click to collapse
lol... What happend to HD and THD games... Did u try playing them at 600mhz??
Overclocking to 1 GHz with the right voltage values seems to be absolutely no problem for Defy.
BTW, does anyone know whether it's possible to set scaling governor to "Interactive" mode under Froyo? Gingerbread kernel let me set it, but I haven't found the way under Froyo.
Battery life was a little bit better, the display and 3G always draw a lot of power.
Standby time got better, but I don't use very low vsel any more due to errors in YouTube and dropped connection of radio streams.
Before I used 300-600-800 at 20-30-48, this was very stable in stability test, but for example Youtube would start showing "error playing video". After I increased vsel, it went away.
I mostly did it to lower temperature, optimal temperature for li-ion is around 25°C according to Wikipedia I think.
I don't play 3d games, they would benefit the most from overclock I believe.
Angry birds RIO for example would stutter for a second or two after a level loaded, but it would become as smooth as at higher clocks, when I wait for a second.
I hope flash gets better, when hardware acceleration gets enabled in Quarx's CM7.
I was running [email protected] for a month straight. No issues at all. The highest my temp reached was 112F after playing games for about an hour straight. I now just run it at [email protected], and it's plenty fast for me. I did some "testing" with all the options in SetVsel. It's not science sound, but if you use the Gingerbread Icon in the notification bar, and are running at stock (800 speed) you will notice when the CPU maxes out it doesn't even reach full capacity. I found Words with Friends to really use the CPU, and at 800 it pings the meter in the orange (The notification icon shows green, orange, and red for "zones"). If I overclock it at 1000 or above then the meter goes into the red. I don't know the exact number it switches from orange to red, but being at stock 800 is well below what the chip can really do since it doesn't even max out the meter. I hope I didn't confuse anyone. It makes sense to me.
weird...my cpu at any game reach the 800mhz
yet even in normal situations like browsing through the files on the phone it reaches 800mhz
and also despite the values i use in setvsel are not high(which is:
24 @ 300
34 @ 600
48 @ 800
)
the phone still reaches maximum 38C when i play games and if i set the value in the third vsel the games starts to hang!!
seems like i am the only one who have these problems..but why
anyone have any idea
im running stock arabic froyo btw
if someone can confirm to me that i can keep Arabic language if i installed another rom using custom restore in nandroid then i would be using prays or official 2.3 but no one answered me about that
anyway the important thing is anyone knows why my cpu temp is always high?
Well ambient temperature is important too. If it is 30°C where you live and your phone's temperature is at 35°C I'd say you are good. If the outside temperature is 10°C and your phone is dat 40°C I'd say there is something wrong (unless you were playing games or watching a movie).
in my opinion, it is definitely safe that you overclocking to the leaked moto level.
however, the voltage is still a mystery.
there's no constant conclusion about this.
i'm using [email protected], [email protected], [email protected], and it works fine for me
I'm getting really annoyed. No problems clocking up to 1100mhz with stock voltage (58). But changing the voltage settings, even slightly, makes the phone more or less unstable.
Just as the title says. My Samsung Galaxy S10+ tends to heat up less when I play heavy games like PUBG while charging compared to when I play unplugged. I have the exynos version on latest stock firmware. My fast cable and wireless charging is on and I only use 4G data (no wifi). To my understanding it should be the other way, i.e. heat up more while charging and playing! Anybody else notice this? Any views and suggestions as to why this would happen are welcome.
In theory your phone would be pulling power directly from the fast charger therefore having more current available. Normally when your going off of battery power playing resource intensive games like PUBG run you CPUs at max frequency causing more heat. When the CPUs run that speed they also use more power sometimes more than the battery is ment to run at continuously causing the battery to also heat up. So using direct power reduces the amount of heat production.
As we see in "Gaming" phones like the ROG branded one they use better cooling methods like water and gas(usually hydrogen) based cooling.
jwarrior319 said:
In theory your phone would be pulling power directly from the fast charger therefore having more current available. Normally when your going off of battery power playing resource intensive games like PUBG run you CPUs at max frequency causing more heat. When the CPUs run that speed they also use more power sometimes more than the battery is ment to run at continuously causing the battery to also heat up. So using direct power reduces the amount of heat production.
As we see in "Gaming" phones like the ROG branded one they use better cooling methods like water and gas(usually hydrogen) based cooling.
Click to expand...
Click to collapse
Thanks! Makes sense to me. But this would also mean that it's possibly better for the battery that way (playing while charging). It's definitely heating up a lot less! Will have to wait and see.