Re: Overclock the N900?
 

Any chance of packaging the 800mhz version up into an extras repo item, like the sixadd kernal mod is.

Then we can install with a simple enforced system restart but no flashers involved.

Or is this impossible for this operation?

Really want to try running at 800

:)

Fantastic work guys, so impressed !

Re: Overclock the N900?
 

Has anyone done any experiments lowering the lowest frequencies and seen any significant impact on battery life?

One common usage for me is the music player running alone, with the sound out through headphones or bluetooth. Checking now it spends "most" of that time in the 250MHz state, and I'm wondering if lowering it to e.g. 200MHz would be enough and give any improvement to battery life?

Btw is the time output from "cat /sys/devices/system/cpu/cpu0/cpufreq/stats/time_in_state" in milliseconds or something else?

Re: Overclock the N900?
 

My N900 cpu (overclocked to 900Mhz) runs at 125Mhz with the load at 45%

Re: Overclock the N900?
 

No way. Too dangerous! Well somebody might do it, but that somebody isnt me. This overclocking kernel is very experimental and only for those people who are willing to risk their device breaking and/or reducing its lifetime.

Re: Overclock the N900?
 

So can someone upload an 800/1000mhz kernel here please ?
I don't think that this is very dangerous: If a person know how to use the flasher, I think that he know also the risk of flashing a kernel.

Re: Overclock the N900?
 

i just found this. where is the link for the kernel?? i wanna test

Re: Overclock the N900?
 

Heh. The risk isn't in flashing the kernel, it's in the nearly 50% overclock. You're going to adversely affect your CPU lifetime doing that. Period.

Whether the amount it is decreased is relevant is another issue, but there's no getting around the fact that the increased temperature will accelerate damage due to electromigration, and there are probably other factors in new CPUs i'm not even aware of.

Don't kid yourself this is 100% harmless.

Re: Overclock the N900?
 

pm sent mate

Re: Overclock the N900?
 

Your efforts with MAME put you in the god-like category for me, but the 3430 is clocked as standard at 800 mhz in some devices and people have been using the Droid for months at this speed and higher. Temps spike once breaching 1ghz and this appears to be around where the ceiling of the 3430 is.

Again, this assumes the 3430 in the N900 is the same as the Archos 500 MP and Sammy / Motorola phones. A key for the Droid though is that SetCPU allows dynamic profiling. Most scale their Droid from 250mhz min and 800mhz max.

Battery impact is nominal on the Droid at 800mhz, but I appreciate the N900's OS will not be the same. The evil pulse audio appears to be a worse resource hog than Android's java layer ;)

Re: Overclock the N900?
 

I don't think that this totally harmfull, but the CPU is overclocked only when needed. So ~95% of time it will be at 250/125 Mhz. I will test 1Ghz and if it is non totally stable/too heat/eat too many battery, I will come back to 800/600Mhz.
But a overclocking is very usefull for emulation/ video recording or playback so I want to test :)

Re: Overclock the N900?
 

I will stay away from this before I get more confirmation about safety and more easier way of doing this.

Re: Overclock the N900?
 

same here il stay away till we know for sure its alright, il have to teach myself how to do it then :)

Re: Overclock the N900?
 

Can someone build and send me via pm an modded kernel image with 250/500/550/600/800/1000mhz please ? :)

Re: Overclock the N900?
 

The "bleeding edge" is obviously not for everyone... :) ....

Re: Overclock the N900?
 

this is why a link should not be put on the forums and people should respect that

it is still in testing on the n900

the overclocking will no doubt cause more stress/heat to certain components so the n900 life could be reduced

if a link is put up people who dont know what there doing will try and flash their kernel etc and not really know why they have done it or how to do it and could do more damage then good

some people obvously dont mind testing it out and know the risks but if a public link is in action then it could defo do more damge then good to some users

Re: Overclock the N900?
 

A really big assumption there is that the cooling is the same...
The engineer from Nokia's comment on the issue (for what it's worth) suggested that the N900 is not designed to handle prolonged frequencies above 600 MHz.

In any case, it doesn't alter the facts as i stated them. The relevancy is admittedly highly subjective. I have my Zaurus C860 still. It's at least five years old at this point and until I picked up my N900 it was my everyday PDA. IIRC, the duty cycle of the 3430 at the N900 design spec. is not even five years, and it's probably half of that at 1GHz. I'd like my N900 to last until i have a clear and present need for a replacement, but i understand it's a throwaway society, especially when it comes to tech gadgets and in particular phones.

Re: Overclock the N900?
 

I want to join this bbq party too. 700 and 800mhz so only small ribs for me please :)

Re: Overclock the N900?
 

Its propable that at 1ghz your phone wont even boot and will set itself in a reboot loop.

Re: Overclock the N900?
 

Very good points! Still anything to help make your great MAME app faster on the N900 sounds good to me ;)

I mentioned the heat dissipation issues earlier in the thread, but missed that caveat in the previous post. Ditto. I would hope the N900 is as robust as the Droid, but ASSUME is an acronym, you know ;)

Re: Overclock the N900?
 

http://img.photobucket.com/albums/v3...403-144644.png


So 1Ghz isn't stable ? The uptime here is 1m7s, how many time your phone was stable before freeze/reboot ? And do you need to reboot it many time before a succesfull boot ?

Re: Overclock the N900?
 

It depends on individual variations between devices. 1GHz could be stable on some devices and not even boot on others.

Obviously overclocking stuff should never make it into extras repositories. After all, it is something that probably voids your warranty, and many users just ignore any possible warnings (only to come whine afterwards).

Re: Overclock the N900?
 

Okay... so you clearly arent aware that there is differences in chips. My one runs @ 1000mhz without a problem (so far). The reason why theres 1 minute in that picture is because I took the pic right it booted up. Since then I've overclocked the DSP and L3.

Not every chip is capable of 1000mhz speeds. This is just purely down to luck what you get.

Re: Overclock the N900?
 

I'm still not sure I understand the benefit of more steps between the slowest state and the fastest state. My device seems to spend >90% at the slowest state, <10% at the highest state, and a negligable amount of time at the intermediary states. But even though there is a lot I don't understand, I'm comfortable with flashing my device, so if some one could make a kernel that looks something like 100/200/300/500/900 or 150/300/500/900, I'd be happy to install it and make my device a guinea pig for this overclocking test.

Re: Overclock the N900?
 

so guys! do you have a script for doing that? is it safe enough to not break my phone forever?

Re: Overclock the N900?
 

guys send me pm too and send me the files...

I wanna try too.

Write a little guide too if you have the time....

I am intrested in 800 mhz only right now.

Re: Overclock the N900?
 

i would like to try this filles too but i didn't find any download link:(

Re: Overclock the N900?
 

Thanks, I know that this was valable for PC's CPU but I was not sure for moblies devices. I hope that mine can support overclocking ~1Ghz.
Can you pm files for 800 Mhz and 1Ghz please ?

Re: Overclock the N900?
 

Last 100% (tested with 30minutes of psx4all playing metal gear solid) stable on stock voltage is 1020mhz for my phone.

Re: Overclock the N900?
 

Could you plese send me those files?..:D thanks!

Re: Overclock the N900?
 

What about the temperature?does it become hot?

Re: Overclock the N900?
 

That's pretty amazing. Have you noticed the device getting significally hotter than usual? As with C2D overclocking, upping the voltage would probably mean more headroom, but also generate more heat. At least my N900 doesn't seem to have any kind of fan inside, despite the size. :)

Anyway, I'm pretty impressed of the Cortex A8 overclockability in general.

Re: Overclock the N900?
 

im going for it....

aint guna fry it... just do small steps! :D wish me luck


making backup as we speak!



ok, went for 800mhz.... 200 extra mhz is not to be sniffed at! guna try this over night then pump it up to 900 2mora! if its all ok.......



http://i56.photobucket.com/albums/g179/saj_1986/pow.jpg

Re: Overclock the N900?
 

i'm currently stable at 900mhz ! do you know some psx games that are playable so i can test ?
but that device seems to be much much more smoother lol
that's like what it should have been since the beginning !

Re: Overclock the N900?
 

but letho, you said that you OCed the dsp ? isn't that the video accelerator ? do you mean we can separately OC the cpu, dsp and gpu ??

Re: Overclock the N900?
 

i have a custom boot screen, seemed to load in a couple of seconds. rather than the little wait i usually have!

ain't got no suggestions. tekken 3 seems to be stable. check out this thread

http://talk.maemo.org/showthread.php?t=47937

Re: Overclock the N900?
 

I'd like to get me some 900mhz if any of you are willing to oblidge

Re: Overclock the N900?
 

read the whole thread.... lehto is ya man!

Re: Overclock the N900?
 

Wow, nice job everyone!

My N900 is feeling a little lucky tonight and I think I'm going to try the custom kernels... Can anyone PM me the 800Mhz and the 1Ghz ones?

Thanks :)

Re: Overclock the N900?
 

Can you upload a video of all this? like show us how things renders fast, microb psx4all.. etc. I want to see all this sweetness!! :)

Re: Overclock the N900?
 

Oh I've been following the thread for a few days - I just can't PM as my account is new.