maemo.org - Talk - Overclock the N900?

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- Nokia N900 (https://talk.maemo.org/forumdisplay.php?f=44)

- - Overclock the N900? (https://talk.maemo.org/showthread.php?t=39753)

Re: Overclock the N900?

Quote:

Originally Posted by miwalter (Post 596317)

It's 5 years only, when the cpu runs at 600Mhz (or 720) _all the time_ when it's running. But as the n900 switches clock - the math to calculate the lifespan goes far beyond basics.

It seems to be more complex than this. Based on the tables from the datasheet, the lifespan gets significantly shorter if CPU runs more than 1/4 of time at 600MHz. I guess in reality there are no such big jumps in lifespan when going from 1/4 to 1/3 600MHz percentage for example and the tables give only rough approximations (with a good safety margin), but still they show some overall picture.

Another interesting thing is that the expected lifespan is longer when running constantly at maximum 600MHz clock frequency, than jumping between different clock frequencies arbitrarily. Maybe it's somewhat similar to lightbulbs lifespan (they also fail faster if you turn them on/off frequently, than just having them permanently lighted).

But the point is still the same. If most of omap chips can run safely at very high clock frequencies, I guess TI would bin them and sell really lots of high speed chips, blasting the competition (snapdragons, etc.). This does not seem to be happening.

Re: Overclock the N900?

Quote:

Originally Posted by miwalter (Post 596317)

It's 5 years only, when the cpu runs at 600Mhz (or 720) _all the time_ when it's running. But as the n900 switches clock - the math to calculate the lifespan goes far beyond basics.

Simple as that: we cannot say for sure how many days/months/years the lifespan will degrade. Absolutely sure seems to be, that there is _some_ sort of degradation *sing* - but I guess no one of us (hardcore-gamers excepted - they should've bought a psp in the first place *g*) will see a dying cpu the next few years.

Hehe,
PSP can be overclocked to 333Mhz too, and I believe many are doing that since it's available and playing non-stop for hours and over Wi-Fi too.

Re: Overclock the N900?

Serge... do you own a N900?

Re: Overclock the N900?

Quote:

Originally Posted by Faz (Post 595755)

Are we sure this is related to the kernel flash?
I flashed it to the 900 Mhz and my Settings, About product reads:

Nokia N900
Maemo 5
Version: 3.2010.02-8.203.1

can some one explain how the phone information stayed?

Re: Overclock the N900?

@ronaldo in the configuration menü > productinfo
put after the kernel patch this info meens version:<unknow>

Re: Overclock the N900?

Quote:

Originally Posted by meegode (Post 596352)

@ronaldo in the configuration menü > productinfo
put after the kernel patch this info meens version:<unknow>

mine is unknown but that user kept his info

Re: Overclock the N900?

Quote:

Originally Posted by Serge (Post 596335)

Another interesting thing is that the expected lifespan is longer when running constantly at maximum 600MHz clock frequency, than jumping between different clock frequencies arbitrarily. Maybe it's somewhat similar to lightbulbs lifespan (they also fail faster if you turn them on/off frequently, than just having them permanently lighted).

Yeah, the CPU heating up and then cooling down in cycles certainly puts some stress on it.

I thought it was clear from the beginning that people worrying about device lifetime should just steer clear of overclocking - and the rest have accepted the possibility of a catastrophic failure (assuming they even read the warnings). Oh well, at least there are now a couple of warnings more.

Re: Overclock the N900?

@Ronaldo

Quote:

Originally Posted by humble (Post 595783)

well i do... first i did the emmc image.. then i did the image befor PR 1.1.(back to back) then the 900 kernel image....
then i updated with App manager (sorry not PC Suite)

this is what i did

and the info in about is not unknown

Re: Overclock the N900?

Engadget has added fuel to the fire with their maemo.org source

- Nokia N900 overclocked to 1GHz in bid to outrun obsolescence (video)
By Thomas Ricker posted Apr 5th 2010 at 4:22AM -

since when do we need to overclock our '900s to save them from obsolescence?

Re: Overclock the N900?

Quote:

Originally Posted by Lehto (Post 596307)

Oh man this got really out of hand. I bet nobody even reads the warnings about device wearing and other numerous problems that come with them.

Its everybodys decision. Nothing more, nothing less. Im aware of the fact the OC can significantly reduce my N900s lifespan. This is not about getting out of hand. Dot!