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I already overclock and undervolt my Galaxy S running Darky 8.1 with SUpero Optimize Kernel 4_6_8. But I'm not sure that this clock frequency will be safe for my device.
Hi Luke.
First of all i wouldn't recommend it at all.
Why...???
First of all, this is an expensive mobile phone.
When we put custom ROM's inside we are always doing it with a risk to get our phones ''bricked'' or unresponsive.
For example,
i have OC my PC's proccessor and i did it on purpose, but when you OC it,
your proccessor's life-time is decreasing and the question is...how long will it work!
So it's the same thing for SGS, how long will it work and is your proccessor going to get fried up.
So for me now...i'll stick to the darky's custom rom and nothing else.
LukeSP said:
I already overclock and undervolt my Galaxy S running Darky 8.1 with SUpero Optimize Kernel 4_6_8. But I'm not sure that this clock frequency will be safe for my device.
Click to expand...
Click to collapse
Its up to you. I have it OC. Firstly, Overclocking doesnt mean that the processor is going to run at 1.2Ghz all the time. On the contrary, you can govern the speed of your processor and it runs to 1.2Ghz only when it needs to. For example, after using Voltage tool, use SetCpu and there you can set the mode to conservative or on-demand. Go to Info tab and there you can see for how long certain frequency/CPU speed was used and you will see different values are used, not just 1.2Ghz.
As for the safety part, Putting a custom ROM, Rooting etc is already the way your phone is not supposed to be used, risking the life and warranty.
So, it depends how you look at it. I recommend it.
Essence is its up to you and your choice to take the risk involved .
jje
Charlie Wax said:
Hi Luke.
First of all i wouldn't recommend it at all.
Why...???
First of all, this is an expensive mobile phone.
When we put custom ROM's inside we are always doing it with a risk to get our phones ''bricked'' or unresponsive.
For example,
i have OC my PC's proccessor and i did it on purpose, but when you OC it,
your proccessor's life-time is decreasing and the question is...how long will it work!
So it's the same thing for SGS, how long will it work and is your proccessor going to get fried up.
So for me now...i'll stick to the darky's custom rom and nothing else.
Click to expand...
Click to collapse
theres a reason you can overclock a cpu alot more than stock, fans, coolants etc.
a computer chip needs to work whether its in the hottest climate and the coldest and thats why youve got scope to overclock the ass of the cpu if you got the fans , pipes, water blah blah blah
so the cpu overclock and the phone overclock are totaly different
regards
thebazman said:
theres a reason you can overclock a cpu alot more than stock, fans, coolants etc.
a computer chip needs to work whether its in the hottest climate and the coldest and thats why youve got scope to overclock the ass of the cpu if you got the fans , pipes, water blah blah blah
so the cpu overclock and the phone overclock are totaly different
regards
Click to expand...
Click to collapse
So would you be so kind to explain us the differences between those two things...
From my point of view...it is the same thing, the CPU will not always work at full load, as darky once said there is no need for overclocking or dual-core cpu on mobile phones.
The problem is not in the hardware, it's inside the software.
K to the question.
It is relative "safe" if you know how to do it, but not much point of doing it.
I used to have it Overclocked but saw only the slightest difference.
I think you better off with what you are on mate.
Unless you are bored want to try it out
Charlie Wax said:
So would you be so kind to explain us the differences between those two things...
From my point of view...it is the same thing, the CPU will not always work at full load, as darky once said there is no need for overclocking or dual-core cpu on mobile phones.
The problem is not in the hardware, it's inside the software.
Click to expand...
Click to collapse
if you say theres no difference then fine. ive just explained why you can overclock a pc cpu.
a mobile phone processor and its cooling system is different dont you think?
well if someone says dont overclock your pc cause theres no need, would you follow that instruction ?
regards
btw im not saying your better of overclocking or not, its up to the individual to research or read im just pointing out theres a big difference from pc cpu and phone cpu
It depends...on my primary usage of PC.
I'm a photographer, so i need lot of CPU and RAM power, but according to that i have adequate cooling system.
But my point is overclocking is always the same thing, raising your voltage and CPU speed. Mobile phone actually doesn't need OC, the usage of CPU is written inside the program, application, software...you name it.
I agree with you that cooling is different, but c'mon mate, do u really see that big difference.
Charlie Wax said:
It depends...on my primary usage of PC.
I'm a photographer, so i need lot of CPU and RAM power, but according to that i have adequate cooling system.
But my point is overclocking is always the same thing, raising your voltage and CPU speed. Mobile phone actually doesn't need OC, the usage of CPU is written inside the program, application, software...you name it.
I agree with you that cooling is different, but c'mon mate, do u really see that big difference.
Click to expand...
Click to collapse
you keep talking as if iv said ive overclocked my phone , i havnt
i just gave a pov on the differences thats all
regards
I overclocked my SGS to 1.2GHz because of Dungeon Defenders. It was unplayable with many creatures and players. After OC, the difference is huge. No problems with overheating or freezing.
How to OC SGS on Darky's ROM 9.1 with SO Kernel?
Is there any tutorial? Anybody can explain me how to OC to 1.2Ghz?
You can use Galaxy tuner app from market
Sent from my GT-I9000 using XDA App
Overclocking always has risks, except on platforms designed to accommodate it. Don't overclock your phone if you rely on it for everyday use.
I have my phone at 1.3ghz for everyday use. No lagfix, its buttery smooth! I'll never go back.
I don't think its safe
Searching Google for other peoples opinion on this. I have over clocked at times and the difference is small unless you are looking at benchmarks.
I think what people don't realize is that each cpu has an average life span at its given clock speed. When you over clock i can say 100% for certain you are decreasing its life.
The decrease may be so small that the phone is going to be outdated before it dies or it could be great enough that one day in 3 months time your phone just dies and there is not really any way of knowing for sure.
So id say if you are going to over clock just be aware of that as a lot of people seam to think as long as you use profiles and don't let it get over a certain temp its doing no damage =P
martan1981 said:
I overclocked my SGS to 1.2GHz because of Dungeon Defenders. It was unplayable with many creatures and players. After OC, the difference is huge. No problems with overheating or freezing.
Click to expand...
Click to collapse
strange. I have played DD1 & DD2, with standard 1GHz without any problems.
I'm on insanity cm with glitch kernel, @1.4Ghz for everyday use, very smooth, web pages load in a flash, the time it spends at that frequency is tiny, if I was gaming a guide amount I would probably go down to 1.2Ghz to be safe as it would probably warm up a bit, but I monitor everything carefully, time in state, temp, etc........to me it is worth it, but of course there is a risk, but my contract is 2 years, so phone only has to last that, and if it does fry, how are samsung going to know? They will just replace motherboard, and in any event I'm kind of old fashioned, I take responsibility for my mistakes! Do it and enjoy, or don't and forever wonder!
Sent from my GT-I9000 using XDA Premium App
Charlie Wax said:
Hi Luke.
First of all i wouldn't recommend it at all.
Why...???
First of all, this is an expensive mobile phone.
When we put custom ROM's inside we are always doing it with a risk to get our phones ''bricked'' or unresponsive.
For example,
i have OC my PC's proccessor and i did it on purpose, but when you OC it,
your proccessor's life-time is decreasing and the question is...how long will it work!
So it's the same thing for SGS, how long will it work and is your proccessor going to get fried up.
So for me now...i'll stick to the darky's custom rom and nothing else.
Click to expand...
Click to collapse
yeah i agree,i don c the sense of oc,if u c the current market there r phones wiv 1.5ghz,3d chips an all those high fiv hardware.even a 2ghz dual-core is abt to come.the company has given sgs 1ghz ,but neva said its cool to oc it...i had tried oc once but frankly i dint notice any diff..but its as per personnel wish ,if u wanna oc then its right for u....
Its totally safe as long as you don't be ridiculous about it....I.e most people make kernels capable of oc to 1.7ghz but that's just stupid because you'll fry your processor, I'd say Max....1.5ghz.....oh and btw it eats your battery so I suppose theirs good and bad sides to it
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Hello people
Is it possible to overclock my laptop's CPU?
alex ainsley said:
Hello people
Is it possible to overclock my laptop's CPU?
Click to expand...
Click to collapse
Way wrong place to ask this. I think.
But yes, depending on brand, etc.
ok sorry where should i ask that ^^ question
Try the off topic forum.
Sent from my Incredible with the XDA Premium App.
Depends what motherbaord and CPU you have
You can OC a laptop, but the thermal cooling won't work well. It's best NOT to do it.
well I've got due core Pentiums, but tell me this... if it's possible to overclock my pc just with some coding, like when your rooting a android phone ?
alex ainsley said:
well I've got due core Pentiums, but tell me this... if it's possible to overclock my pc just with some coding, like when your rooting a android phone ?
Click to expand...
Click to collapse
Yes, you probably can... doesn't mean you should do it. Did I mention it'll kill your CPU faster than you can say gigahertz?
Just google around for the exact model of your CPU and overclocking.
But you shouldn't though.
Ok I don't want to kill my pc so I wont to it.
But if there's a safe way of doing it like doing it with android phones then let me know.
Even what we do with the Androids aren't good. The underclock is there to reduce battery consumption.
Overclocking your processor should be done with extreme caution. The excess heat caused can be fatal to the core and anything around it. The best cooling method is always liquid nitrogen.
real men overclock to the max .
that said , oc is done in the bios 90% of the time and 95% of the lappys wont even have an oc option in the bios
PartTimeLegend said:
Overclocking your processor should be done with extreme caution. The excess heat caused can be fatal to the core and anything around it. The best cooling method is always liquid nitrogen.
Click to expand...
Click to collapse
Right... keep the liquid nitro on your laptop...
Snet from me HTC Dserie using lé XDA app. Excuse typoz.
souljaboy said:
real men overclock to the max .
Click to expand...
Click to collapse
So I should have my phone running at 2Ghz all the time
MacaronyMax said:
So I should have my phone running at 2Ghz all the time
Click to expand...
Click to collapse
well i know i have mine screen on at 1.54g(max) ... but 2ghz .. impressive
souljaboy said:
well i know i have mine screen on at 1.54g(max) ... but 2ghz .. impressive
Click to expand...
Click to collapse
Haha Thanks
I do not see the purpose of overclocking. The phone works fast enough. But if it gets you excited...
SGS
just use setFSB:
http://www13.plala.or.jp/setfsb/
It is possible to overclock any CPU
But the problem with laptop is that usually they run very hot with the stock clock settings,
as soon as you overclock it makes the CPU run faster but Hotter as well and you run the risk of causing permanent damage to your laptop, Best not to do it,
Plus it will greatly reduce battery life
Unscrew the bottom of your laptop, scrap the stock heatsink for a corsair watercooler kit, up the FSB bus until the RAM melts....
...profit!
hey everybode!
i wanted to know i have rocket rom and i want to use setcpu to overclock my kernel
and sebastian is max to 1400 is thers good kernel that i can play with it till 1700mghz or 1900?
but it need to be stable
Abyss goes to 1700. My CPU can't take it, sadly
bubu23 said:
but it need to be stable
Click to expand...
Click to collapse
The stability is dependant on your hardware; some chips can only overclock to 1500Mhz and some can overclock all the way to 1900Mhz. It is not something the kernel has a say over.
Don't all of the notes have the same cpu? Why can some be overclocked and others not?
Sent from my GT-N7000 using Tapatalk
kkg720 said:
Don't all of the notes have the same cpu? Why can some be overclocked and others not?
Click to expand...
Click to collapse
They all can be overclocked, but how much is a different thing altogether. It's quite simple really, not every chip manufactured is of equal quality; some chips have more imperfections. The more imperfections the less it can be overclocked before it becomes unstable. It's the same thing as on PCs, too.
Stable is it when you do nothing and use it in originally form. Overcklocking need more Power more power is less time you enjoj your note!
Generally these chips are made to tolerate a certain speed, and because of variability, the manufacturer drops the speed tolerance to ensure overall quality. Some will still be able to manage 1500, 1700, or even 1900 (although rarely, I'd say). Just about all of them tolerate 1400, so very few are defective at the stated tolerance. With 5 million, you will get a few, however.
This is one of those rare occasions when statistics have a benefit in the real world!
jeromepearce said:
Generally these chips are made to tolerate a certain speed, and because of variability, the manufacturer drops the speed tolerance to ensure overall quality. Some will still be able to manage 1500, 1700, or even 1900 (although rarely, I'd say). Just about all of them tolerate 1400, so very few are defective at the stated tolerance. With 5 million, you will get a few, however.
This is one of those rare occasions when statistics have a benefit in the real world!
Click to expand...
Click to collapse
I will keep mine at stock speeds because ignorance is bliss
bubu23 said:
hey everybode!
i wanted to know i have rocket rom and i want to use setcpu to overclock my kernel
and sebastian is max to 1400 is thers good kernel that i can play with it till 1700mghz or 1900?
but it need to be stable
Click to expand...
Click to collapse
There are many out there that will let you overclock. Search the Android development forum.
Like most, I have flashed heaps of times, probably at least four or five times a week when I first got this wonderful Note, but in the last month or so have only been tempted to stray three or four times. Personally Franco 6 is best for me, because I favour battery life and stability rather than overclocking (1400MHz is not bad as a standard!!)
I would encourage you to try a few for a few days, as long as you backup often you should have a great experience!
Are all kernels capable of overclocking?
Is there one that overclocks the best?
How do you tell how high you can go?
Do you jusy keep overclocking until the NOte stops working?
If so, there must be a fine line.
jeffs99 said:
Are all kernels capable of overclocking?
Is there one that overclocks the best?
How do you tell how high you can go?
Do you jusy keep overclocking until the NOte stops working?
If so, there must be a fine line.
Click to expand...
Click to collapse
Stock kernel isn't capable of overclocking.
One way to tell is to download things like SetCPU which detects the range of the clockspeed. Another way is to simply read the description of the kernel thread.
How high your phone can go is an individual thing. You need to overclock in slight increments (say 50mhz at a time) and run a stability test to see if the phone crashes or not.
You DO NOT pull the slider all the way to 1.9 ghz and "see" if anything happens. If you fry your CPU, do not come to us for help.
This is why I don't like overclocking, it's a waste of time to run the stability tests, etc.
In summary, you need to raise it a little bit, and run stability tests and repeat the process until your phone crashes. At that point, you'd know the last safe-stable clockspeed that your CPU can take.
PoisonWolf said:
Stock kernel isn't capable of overclocking.
One way to tell is to download things like SetCPU which detects the range of the clockspeed. Another way is to simply read the description of the kernel thread.
How high your phone can go is an individual thing. You need to overclock in slight increments (say 50mhz at a time) and run a stability test to see if the phone crashes or not.
You DO NOT pull the slider all the way to 1.9 ghz and "see" if anything happens. If you fry your CPU, do not come to us for help.
This is why I don't like overclocking, it's a waste of time to run the stability tests, etc.
In summary, you need to raise it a little bit, and run stability tests and repeat the process until your phone crashes. At that point, you'd know the last safe-stable clockspeed that your CPU can take.
Click to expand...
Click to collapse
Thanks!
What do you recommend for a good stability test?
I'm on franco.kernel v10 and OC to 1600 using Tegrak. Tegrak runs the stability tests automatically and reverts to stock 1400 if unstable or a reboot occurs.
I tried 1700 but Note rebooted after about 2 minutes. Booted right back up at 1400 with no problems. Re-set to 1600 and running smoothly.
kraz
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Set CPU has a CPU stress test
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If you have undervolted your Nexus 7 or any other tegra 3 based device please post the results here so I can throw them into a Excel sheet for development.
Using advanced mathematics and complex formulas I will make a undervolted kernel that's stable for everyone. For that, I need ideally 30 results or more. Less is ok but more or equal is better.
FORMAT 1:
CPU
- [FREQ1] [VOLTAGE1]
- [FREQ2] [VOLTAGE2]
- [FREQ3] [VOLTAGE3]
- ,,,
Click to expand...
Click to collapse
FORMAT 2:
CPU GLOBAL: [OFFSET]
Click to expand...
Click to collapse
I also accept 1 frequency result. You don't have to undervolt everything. I favor the last known voltage that crashes as well if you can send this I am even more happy.
Undervolted mine by 50mv
Sent from my Nexus 7 using Tapatalk 2
djjonastybe said:
If you have undervolted your Nexus 7 or any other tegra 3 based device please post the results here so I can throw them into a Excel sheet for development.
Using advanced mathematics and complex formulas I will make a undervolted kernel that's stable for everyone. For that, I need ideally 30 results or more. Less is ok but more or equal is better.
Click to expand...
Click to collapse
In order to use "advanced mathematics" and "complex formulas".. You might want to provide a format for "the results" you want people to provide.. Without a stream of formatted data to input your "complex formulas" and "advanced mathematics" is impossible..
"Advanced mathematics" and "complex formulas" sounds like you are doing an infomercial.
Pure waffle.
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djjonastybe said:
..I will make a undervolted kernel that's stable for everyone
Click to expand...
Click to collapse
ha! good luck. considering some devices arent stable at all when undervolted just a tiny bit, and otbers are stable with a lot of undervolting, you have a tough road ahead of you.
simms22 said:
ha! good luck. considering some devices arent stable at all when undervolted just a tiny bit, and otbers are stable with a lot of undervolting, you have a tough road ahead of you.
Click to expand...
Click to collapse
I actually came back to post exactly this but Simms22 was too quick, as usual!
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nodstuff said:
"Advanced mathematics" and "complex formulas" sounds like you are doing an infomercial.
Pure waffle.
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Click to expand...
Click to collapse
I see you went with the more direct and honest approach. I tried being more subtle with my response.. :laugh: But yeah.. Marketing hype for a kernel.
styckx said:
I see you went with the more direct and honest approach. I tried being more subtle with my response.. :laugh: But yeah.. Marketing hype for a kernel.
Click to expand...
Click to collapse
Might as well be honest, set him on the right track early in his dev career rather than him rely on buzzwords and fud like some people do.
These are forums for android devices, not Apple devices, the reality distortion field doesn't work here, fancy marketing terms should be left at the door.
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My Galaxy Nexus is proof of undervolting being unstable using software while being stable with manually programming the voltages. So I am going to give this a good shot anyway.
My Galaxy Nexus uses SmartReflex to undervolt.
Look at this table I made:
https://docs.google.com/spreadsheet/ccc?key=0AuqacKmGLKJ6dEdJZG5QTmNtQnoyYk0zbm5IanluMHc#gid=1
You see the core or gpu was already crashing at 974mV, which was the reason why I stopped undervolting using the thread. But don't give up, I tried again using SmartReflex because I felt I should be able to get lower. And now I am at 911mV but I did not try to get lower yet.
I plan on undervolting by actually programming it. I don't know how you guys undervolt for the Nexus 7, since I am fairly new with this device.
READ FIRST POST for formatting
nodstuff said:
"Advanced mathematics" and "complex formulas" sounds like you are doing an infomercial.
Pure waffle.
Sent from my GT-I9300 using xda premium
Click to expand...
Click to collapse
http://en.wikipedia.org/wiki/Student's_t-distribution
Using that I can calculate which voltage to take that will work for 90% of us or 99% of us or maybe 100% ?
For that I need some results. The more the better.
The only voltage settings that will work for 100% of people are stock voltages.
you will run into endless problems if you release an undervolted kernel because what works for 75% of people won't work for the rest.
If you adjust voltages to include more people the people that can handle the lower voltages aren't getting the full savings their device can handle. Which defeats the point of releasing an undervolted kernel to save battery.
Undervolting should be up to the individual, just release with stock voltages and make a guide showing people how to undervolt.
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nodstuff said:
The only voltage settings that will work for 100% of people are stock voltages.
you will run into endless problems if you release an undervolted kernel because what works for 75% of people won't work for the rest.
If you adjust voltages to include more people the people that can handle the lower voltages aren't getting the full savings their device can handle. Which defeats the point of releasing an undervolted kernel to save battery.
Undervolting should be up to the individual, just release with stock voltages and make a guide showing people how to undervolt.
Sent from my Nexus 7 using xda premium
Click to expand...
Click to collapse
^^ Truth
I've done a bit of pc overclocking over the years and we'd always seek out the best steppings to find cpu batches that would give a better clock speed for less volts. What would work on one person's cpu wouldn't work on another sometimes even within the same stepping. (My current machine is getting long in the tooth but it's running a 33% OC below stock volts and stable as a rock.)
When the N7 cpu's are tested the stock voltage is the point where 100% of them will run without issue. Certainly there are many, maybe even most N7's that will run undervolted but until you try it you just won't know. Undervolting needs to be done on a case by case basis.
I uv by 100mv on every step on Franco kernel and I've never had a sod or reboot. Maybe you could release different versions like light, medium and heavy to cater to different users that have sets than can uv more or less. To address all these people naysaying I say just go for it, don't let these people dishearten you from what you want to do. I'm sure there will always be users who are willing to try
sorry to break the fun lol
Opened a thread with undervolting settings in different situation. For now i think its the lowest possible
bervin said:
I uv by 100mv on every step on Franco kernel and I've never had a sod or reboot. Maybe you could release different versions like light, medium and heavy to cater to different users that have sets than can uv more or less. To address all these people naysaying I say just go for it, don't let these people dishearten you from what you want to do. I'm sure there will always be users who are willing to try
Click to expand...
Click to collapse
That's exactly the same as what I have done. 100mV right across the board, and I have also never had a reboot or any other negative effect from doing it. Just a bit more battery life.
I too UV 100mv across the board. Never had an issue. And I OC up to 1.6ghz.
phonic said:
I too UV 100mv across the board. Never had an issue. And I OC up to 1.6ghz.
Click to expand...
Click to collapse
Same here, no issues with 100mv UV on stock speeds. What would happen if we went too low, would it fail to boot at all or is there some safety mechanism that would allow us to boot into boot loader?
davidoff59 said:
Same here, no issues with 100mv UV on stock speeds. What would happen if we went too low, would it fail to boot at all or is there some safety mechanism that would allow us to boot into boot loader?
Click to expand...
Click to collapse
When either OCing or UVing, you should ALWAYS test out the changes prior to saving them as a persistent boot state. This way, if you set something too high/low and it proves to be unstable, if you restart the device it will revert back to normal.
In the event that you OC/UV too much, yes, you would see signs of instability. In some cases it could show up as soon as you applied to change, in other cases it could take a while to notice. For example, some games or other high processing powered activities could FC/crash. Or your tablet might freeze or reboot. But again, as long as you didn't save your changes as a boot setting, it will be fine once it reboots.
In the event that you did save it, and the settings were unstable for your device, you could boot up into recovery and then manually erase them from taking effect. Recovery doesn't use those settings, as it's technically a different OS. But that can be complicated a process for some. So test test test save. Or don't save and just apply them manually.
Two other points:
Yes, most (all?) devices do have safeguards to protect itself against permanent hardware damage from OC/UVing. If it gets too hot, they will often shut down to protect themselves.
And just because one device can handle being OC'd or UV'd to a certain level doesn't mean they all can. Very minor differences in each component can impact one devices ability from another. The manufacturers only test to see if they can handle the published speeds/etc., but in many cases they can go higher if set to. In others, not so much.
Thanks for that phonic. Given the range of ROMs and kernel's available and the improvements already built in, under volting may not help a lot but every bit helps. Eg this screen on time is pretty good.Close to six hours screen on time with iirc 35% battery remaining.
Paranoid android with motley kernel. I don't over clock the nexus 7 as its fast enough. In fact I under clocked it to 1000 MHz max before and it was still fast but the screenshots are at stock volts and speeds.
it's actually plain simple. If everyone posts results. I can make a kernel with voltages that work for 75% of all people or maybe for 95% of all Nexus 7 owners.
It's called mathematics. But to do that I need as much results as possible.
Easy to do if you know what you are doing, right ?
http://en.wikipedia.org/wiki/Confidence_interval
Anyone can say something about CustomROMs specially about using CynogenMode, i.e: I heard that by using any other roms than stock rom , the device is being potentially harmed , Is that true ? I am using CM10.0 as regular use , Some of my friends says it will eventually bring harm to the device !!!
No it won't unless you are overclocking
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snip3r_e said:
Anyone can say something about CustomROMs specially about using CynogenMode, i.e: I heard that by using any other roms than stock rom , the device is being potentially harmed , Is that true ? I am using CM10.0 as regular use , Some of my friends says it will eventually bring harm to the device !!!
Click to expand...
Click to collapse
If I underclock it like selecting its lower state in 100MHz , Is it will be a problem ?
No
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1200 OC will drain your battery faster
1000 will keep it sweet
Theoretically only your manufacturer knows exactly how each chip works and/or interacts with the system. Therefore you could make a point for saying the manufacturer and only the manufacturer can make a ROM that is "safe" for your device. Obviously this isn't the case (Samsung ROMs can break your phone too if you're unlucky.) More importantly though a manufacturer isn't going to like covering damage done to your device by a ROM written by people who don't know all of the phone's details. (e.g.: the warranty might be void if you flash your phone)
Practically, information on chips is more or less publicly available (depending on the specific chip). Finding out what's in a phone usually is doable and finding the details in a stock ROM is possible too. (Not that I could, but some awesome people can.) Ergo, not only the manufacturer knows the details and they're just covering themselves against idiots (e.g. people who flash a ROM for a different phone and then go back to the store (crying) because their phone stopped working).
One minor detail that can potentially suck is voltages. Unlike in most desktop PCs, the ROM of a phone can actually change the voltages at which a specific chip operates. (Or some of them at least.) As you may or may not know, a chip operated at the wrong voltage can go from working to broken as **** in less than .1 second! This allows you for example to OC/UC your phone, as mentioned above. But if your chip doesn't like it, no guarantees given. Usually ROM builders aren't stupid though and they'll set the voltages to something smart (like the voltages provided by the chip manufacturer or the voltages of the stock ROM).
TL;DR:
A bad ROM (either a ****ty ROM or perhaps an unlucky pre-release) has the power to break your phone. Usually they won't harm your device at all though. Especially the "eventually" part is pure BS.
Partially unrelated, since it's a side-question:
Underclocking your CPU usually involves lowering the voltage. The only downside you can get from that is that your CPU potentially gets unstable. But: you'll notice that (it will crash) and it won't damage any hardware (but perhaps a file may get corrupt since the phone crashed). Nothing worse than holding the power key of your PC though.
Even more unrelated:
Actually I'm guessing you don't mean "underclocking" but rather "lowering the maximum operating frequency". Underclocking involves using the chip at a frequency below the normal minimum frequency (e.g. for my I9001 the normal minimum is 245 MHz, but I enable using 122 MHz as well). Lowering the maximum operating frequency is more like having a car that can go up to 200 km/h but you only drive 120 km/h. Unless you're driving away from some sort of freak boat chasing you it's obviously not going to damage your car. Or phone in this case.
In case you were wondering; yes I do like typing out answers that are way too long.
Marshian said:
In case you were wondering; yes I do like typing out answers that are way too long.
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IMHO, an enormously long post is better than an enormously short post. Just keep it TLTR. Enormously short posts make people do bad stuff.
moorkai said:
Enormously short posts make people do bad stuff.
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Rubbish. Add .5v to all freqs.
Sent from my GT-I9000 using Tapatalk 2
knuckles1978 said:
Rubbish. Add .5v to all freqs.
Sent from my GT-I9000 using Tapatalk 2
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you are more likely to damage it by throwing it on the ground due to frustration.
bugatpt said:
you are more likely to damage it by throwing it on the ground due to frustration.
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Yeah, I know, it would probably just crash, then be fine after a reboot lol
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