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2011-10-11
, 18:12
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Posts: 158 |
Thanked: 340 times |
Joined on Jul 2010
@ middle of nowhere
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#52
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The processor is actually a OMAP3430, which is spec'ed to run at up to 600Mhz. The default shipped top frequency was 600Mhz, not 550. One thing Nokia did do was over-volt the chip at 600Mhz by just a hair vs TI's suggested voltage for that speed. It's very probable they did that because the prototypes needed the extra voltage to sustain the speed, and it never got backed out.
Realistically, Nokia for the most part stayed in spec. Because of how the chips were made, some can in fact be overclocked up to as high as 1.2Ghz (a 2x of what they're rated at). Most become unstable running over 900Mhz.
Keep in mind, all of this is generally for short-bursts. If you look at standard usage, the device spends most of it's time in it's sleep state and maybe 5 to 7% of it's time at it's highest speed. The built-in scaling system is actually very good about keeping the CPU running at the lowest speed/power level needed to do what it's doing.
If you're using a CPU intensive program (doing ray tracing, running a gaming emulator, etc), then you may want to consider NOT overclocking while doing that, since that's they type of activity that will cause excessive use, excessive heat, and possibly cause damage. For short-term bursts (GUI updating, 3 or 4 seconds of intense computing for a flash app, etc), overclocking isn't an issue.
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2011-10-11
, 18:19
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Posts: 158 |
Thanked: 340 times |
Joined on Jul 2010
@ middle of nowhere
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#53
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2011-10-11
, 18:47
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Posts: 1,455 |
Thanked: 3,309 times |
Joined on Dec 2009
@ Rochester, NY
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#54
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Here are some quick question: Did anybody overclock the cpu to death?
Is there anybody on this forum who break his device by overclock?
I want solid proof
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2011-10-11
, 20:15
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Posts: 158 |
Thanked: 340 times |
Joined on Jul 2010
@ middle of nowhere
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#55
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The answer to both questions (AFAIK) is no. I'm not an opponent of overclocking, I actually was one of the few folk overclocking with Lehto's1 early overclock kernel. You can do what you like with your device, I'm just giving you advice. Mines been stable and overclocked for 18+ months now, but then I'm not running NES emulators and the like either...
I still subscribe to the idea that one should be cautious about overclocking. We're talking about overclocking a chipset well beyond it's spec, in a device enclosure without much in the way of heat dissipation. Add in that the CPU is in very close proximity to other heat generating/sensitive sources (like the L-Ion battery), makes it concerning for me. Using a little common sense goes a long way here.
Just the fact that most can't go above 900Mhz and remain stable is a good sign that sustained run times at overclocked speeds (for tens of minutes or hours) is probably not the best idea. Short bursts, which is what you'll find in common usage, should be fine though. Your mileage may vary, based on your device and the environment it typically runs in.
1 For those who are "new" here: Lehto made the first set of overclocked kernels for the N900. Titan then joined in, improved on, setup, and maintained the kernel-power packages for a long time, followed by Pali who now is doing further improvements and maintenance. Kudos to all involved...
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2011-10-28
, 21:47
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Posts: 158 |
Thanked: 340 times |
Joined on Jul 2010
@ middle of nowhere
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#56
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2011-11-17
, 06:53
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Posts: 58 |
Thanked: 47 times |
Joined on Apr 2010
@ Dublin, Ireland
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#57
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2011-11-17
, 07:11
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Posts: 158 |
Thanked: 340 times |
Joined on Jul 2010
@ middle of nowhere
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#58
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2011-12-29
, 06:23
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Posts: 5 |
Thanked: 0 times |
Joined on Dec 2011
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#59
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2013-04-02
, 21:05
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Posts: 158 |
Thanked: 340 times |
Joined on Jul 2010
@ middle of nowhere
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#60
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Tags |
fremantle, nokia n900 |
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Realistically, Nokia for the most part stayed in spec. Because of how the chips were made, some can in fact be overclocked up to as high as 1.2Ghz (a 2x of what they're rated at). Most become unstable running over 900Mhz.
Keep in mind, all of this is generally for short-bursts. If you look at standard usage, the device spends most of it's time in it's sleep state and maybe 5 to 7% of it's time at it's highest speed. The built-in scaling system is actually very good about keeping the CPU running at the lowest speed/power level needed to do what it's doing.
If you're using a CPU intensive program (doing ray tracing, running a gaming emulator, etc), then you may want to consider NOT overclocking while doing that, since that's they type of activity that will cause excessive use, excessive heat, and possibly cause damage. For short-term bursts (GUI updating, 3 or 4 seconds of intense computing for a flash app, etc), overclocking isn't an issue.