Hello,
My Nexus S reboots when I overclock it to 1,4 Ghz or higher. I read some posts of people who run their phone without problem with this speed.
Is there a reason that mine reboots? It happens with every ROM/kernel I use.
Thanks in advance
Linus_BE,
I've seen this as well.
Mine seem to happen only when I try to open Firefox or Opera Mobile.
I assumed that like most desktop CPUs, the processors in mobile devices go through the same type of testing process, and are rated at a specific clock speed because that is the one they are stable at.
Overclocking works because in most cases a CPU is actually capable of running at higher clock speeds, but due to manufacturing defects and/or microscopic differences in the silicon an individual CPU from a batch may not be happy at a faster clock speed.
Now, why mine only seems to exhibit this behavior at higher clock speeds when running Firefox or Opera Mobile, I can't explain.
I don't believe it to be something related to the CPU, since I can run the stress test in SetCPU and not have the device reboot.
Jacob
Related
hi guys.
i'll want know a good program for overclock my trinity.
it's possiblehave 500mhz rock solid?
thanks
http://forum.xda-developers.com/showthread.php?t=324781&highlight=overclock
Some people report Pocket Hack Master worked for them.
Able to actually change the CPU speed, and noticed some obvious changes in their device behaviour.
It's worth a try
well i was experiencing very slow speeds and it seemed too sluggish for a 400mhz cpu. well i install xcpuscalar(3.03) and it was showing my cpu was set at 200mhz. this is a fresh flash of htc official wm5 rom so i found that odd. well i set it to 500mhz and ive been running it stable and smooth no problems. much faster, very obvious, will have to test more to see effect on battery but it does have settings to scale the cpu according to load. ymmv
cecrops said:
well i was experiencing very slow speeds and it seemed too sluggish for a 400mhz cpu. well i install xcpuscalar(3.03) and it was showing my cpu was set at 200mhz. this is a fresh flash of htc official wm5 rom so i found that odd. well i set it to 500mhz and ive been running it stable and smooth no problems. much faster, very obvious, will have to test more to see effect on battery but it does have settings to scale the cpu according to load. ymmv
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That might be a new release of xcpuscalar that does support the samsung cpu effectively.
Some people has tested that soft one year ago, but it appeared to be, even once set to 500 mhz only placebo effect. When check with other softs, the cpu speed remained the same.
Nevertheless, it's very odd that on a fresh bought device, you have only a 200mhz speed, half the normal one...
The Trinity run very slow sometimes, but this is a matter of optimisation of the ROM you are using, not necessarilly a problem with the cpu speed itself.
Another good and simple way to check your cpu speed is TCPMP. In any case, it's always better to double-check with another soft, rather than believe everything your overclocking soft says.
riri22 said:
That might be a new release of xcpuscalar that does support the samsung cpu effectively.
Some people has tested that soft one year ago, but it appeared to be, even once set to 500 mhz only placebo effect. When check with other softs, the cpu speed remained the same.
Nevertheless, it's very odd that on a fresh bought device, you have only a 200mhz speed, half the normal one...
The Trinity run very slow sometimes, but this is a matter of optimisation of the ROM you are using, not necessarilly a problem with the cpu speed itself.
Another good and simple way to check your cpu speed is TCPMP. In any case, it's always better to double-check with another soft, rather than believe everything your overclocking soft says.
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after more usage i uninstalled xcpu. when you first run the program it is set to default 200mhz which is why i thought thats what i was really at. TCPMP says im at 390-400 no matter what. better not to have too many programs running and loading at boot. also i tried pocket hack master but that didnt work either. ill stick to sktools and trinityhack, those registry tweaks are what i think i really needed.
I just installed the latest kitchen build on a 6700 and notice there's a performance program in the settings section, that allows for overclocking the cpu. it has a couple warnings about damages and errors etc, however I'm curious what the experiences are using this. is it safe to run all the time or what? I tried it out a couple times and the phone seems twice as fast. Any info appreciated.
I use Pocket Hack Master v4.33 and I run at 624 all day and have been for a long lone time and never had any adverse effects.
I have used XCPUScaler and I never had a problem, for Xscale processors, from what I have researched, all the program does is change the frequency of the CPU controller, Ram controller, and LCD controller. I have also read that the more power that the Xscale processor is given, the higher the speed/frequency. Well enough tech talk, the only difference I have ever seen is that battery drain is a bit more when the cpu is overclocked, never has frozen on me running at 624Mhz. Good luck.
It seems like every phone can handle a different clock speed, is there is a tried and true way to find the optimal clock speed for your phone?
No as u say every phone acts on hes own so i dont think there is any software for this ( optimal overclock) but there is software for ocing it easy like setcpu or nstools... you can oc your cpu by raising it, and using it with multitasking and if it doesnt reboot in hour or two of heavy usage then go step higher. When it reboots try with step or two higher voltages and so on until you get highest cpu with moded voltages (not more than 2 steps) stable with no reboots. Ofc i wouldnt recommend this as you are not getting anything special from it and you risk your phone... btw optimal cpu speed is its own stock speed that is just pure logic xd
Though there is no agreed upon definition, to me the optimal cpu speed is not the stock speed, the stock speed is the standard safe speed. When a CPU is manufactured it invariably has defects, the number of defects dictates the speed at which it can run. For example, when they manufacture the i5 and the i7 they probably just take defective i7 chips and turn off two cores and call it an i5. (I don't know if they actually do this with the i5 and i7 but it's been common practice with just about every processor in the past.)
I guess I should use a different term like, maximum safe speed.
Trial and error is the best way to my knowledge, haven't heard of any phone apps adjusting clocks on the fly based on temp, inaccuracies, etc, like on a computer. You can feel the temp of the phone and it'll reboot at the smallest sign of instability, just don't set test profiles to set on boot.
And what you say is correct. Processes with similar imperfections are grouped, tested and sold under a given name with the benchmark being stock frequency and voltages. Common practice and very often you get some chips you can over clock til it expands out of its bracket and others which fail at everything but stock.
I'm running CM10, and it's running fine overclocked to 1600 MHz, yet the phone is factory clocked, (with a factory ROM), to 1200 MHz. Why? My phone seems to run perfectly fine using SmartAss2 management, but Samsung apparently purposely underclocks phones for some unknown reason. Obviously stability isn't a concern, or it would crash at 1600 MHz. Yet it is stable, so why is the default clock speed so slow? Considering the phone is perfectly stable at 1600 MHz, would it be possible to O/C my phone to 2 GHz, or would I risk frying my phone if I somehow managed to OC it by that much?
k-semler said:
I'm running CM10, and it's running fine overclocked to 1600 MHz, yet the phone is factory clocked, (with a factory ROM), to 1200 MHz. Why? My phone seems to run perfectly fine using SmartAss2 management, but Samsung apparently purposely underclocks phones for some unknown reason. Obviously stability isn't a concern, or it would crash at 1600 MHz. Yet it is stable, so why is the default clock speed so slow? Considering the phone is perfectly stable at 1600 MHz, would it be possible to O/C my phone to 2 GHz, or would I risk frying my phone if I somehow managed to OC it by that much?
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uhh well.... yea and no. there are a few things you need to understand about microprocessors. no two are alike. they are built on a scale of a few nanometers and any difference causes a significant difference. to keep production numbers up there is a line they have to draw between performance potential and stability. more chips will be stable at lower clocks so they pick an speed they can get a high production number out of. sometimes a whole line of chips is produced with exactly the same core. chips that pass the highest get boxed as the highest performing and priced. chips that dont pass will either have specific features turned off, cores turned off or be underclocked and sold as lower models. in addition to that the top performing models are actually over priced, and often many more pass the tests than they need so perfectly good processors are intentionally disabled to fill the market for lower speed processors, so yes the cpu may be "underclocked" in a sense. but i don't know if that really applies to the infuse because i don't know if there are any chips in the same family that have a higher rated clock speed, if there are they aren't used in phones.
in example, on my pc i have a 3 core processor, it's actually a 4 core and i can even turn the 4th core on in bios, but a certain percentage of that particular model of chip will be unstable with the 4th core active.
another thing to understand is how the clock speed is set. there is a buss and a table of multipliers and dividers. so as one part of the chip oscillates at one frequency the multipliers and dividers say how may times per oscillation the other components go. the cpu speed changes by changing these multiplier values. the problem is that there are only so many multipliers the cpu is designed to use. this is a hardware limitation and can't be overcome so at some point the only way to get more clock speed is to change the buss speed which affects the entire system and will cause instability in most cases. occasionally you can get around this if you change the multiplier values for other componants as well but it's probably not a good idea to mess with it. the hummingbird chip only has multipliers to go to 1600mhz regardless of stability unless you mess with the buss, one developer got the galaxy s to 1700 with buss overclocking but some things didn't really work at that speed and it took a lot of changes to other system clocks. snapdragon chips can go to higher clocks and process numbers better but the hummingbird is better for graphics and multimedia which is more important on a modern phone imho.
so yeah 1600 is it, as far as practicality goes anyway. there are a few infuses that can only go to 1400-1500 as well and galaxy s phones which have the same clock limitations but are only rates for 1000mhz rarely go to 1600, but a few do, my captivate was absolutely peaked out at 1300, believe me i tried to get it higher, i tried a lot of things with voltages to try to get it stable, but even 1300 took some doing. it took a long time before developers even produced a kernel for the sgs that used clocks over 1200 because many of the early builds of the sgs series were much like mine and were not stable at high speeds.
Beautiful. :thumbup:
Sent from my SGH-I997 using xda app-developers app
First I'd like to say excuse my ignorance. So my note 3 was lagging bad after the update to the newest software so I decided to root my device. Not running a custom rom or anything but the main reason I did so was to be able to set my cpu to certain frequencies. So I have done the root. And have tried multiple app from no frills to trickster mod. But each one I have. It will not let me change the frequency above 1497600 mhz. Each time I click on save no matter what frequency above that one it always reverts to 1497600. I use xposed installer and thought I found a module to fix it (dvsf disabler) but if that is what fixes it ive still had no luck. The phone doesnt run horrible but there is a little bit of lag. Does anyone know why this is happening, and how I coukd fix this?
Anyone have any idea? If this is posted in the wrong forum please let me know, I'm just looking for a way around this.
If your CPU frequency is anywhere close to 1,497,600 MHz, I would like to have a word with the laws of physics, and inform it that it is broken. Simply put, there is a limit on how high your CPU can be clocked before it becomes hot as hell and unstable. The highest clock speed I have even heard of a CPU reaching is around 7,000 MHz, which was a very highly overclocked Pentium 4. Newer high end x86_64 CPUs generally don't tend to get overclocked to much higher than 4,000-5,000 MHz, although they are much more efficient with those cycles than a P4, and have the advantage of hyperthreading. Your phone's CPU honestly shouldn't be clocked higher than 3,000 MHz, and if it's a rather weak CPU, it might not even be able to be overclocked to higher than 2,000 MHz.
Or is it perhaps the case that you meant to say your CPU is clocked at 1,497.6 MHz (decimals are important!), and it won't go higher, because as I have just mentioned, there is a limit to how high you can go?
Basically 1.4 ghz. There have been people overclocking at way above that as the cpu is supposed to be around 2.3ghz.