Morning All

I'm thinking of overclocking my phone to 1Ghz, it's slowed down quite a bit lately and doesnt seem as responsive as it used to.

My only conern with doing so is I use the phone primarily for business and rely on it heavily for calls.

Are there any known issues with call quality when over clocking?

Thanks

No known issues.

Is your hildon-home, hildon-desktop, xorg taking a lot of cpu?

usually it's the hildon-desktop, hildon-home that freeze up the device.

if you use voltages that are too low, you risk your device becoming unstable. stick with one of the presets (xlv, etc) and you should be fine.

also, if you use your phone a lot, battery will drain pretty fast.

http://talk.maemo.org/showpost.php?p...&postcount=774

Definitely check with "top" where the CPU time gets consumed.

If the phone is slowing down, it is far better to fix the problem instead of throwing more MHz on the problem. You'll just get a warmer phone with a shorter battery life.

On the other hand - after you have fixed the problem that is slowing down the phone, you may get longer battery times with the overclocking, since you may also reduce the lowest speed the processor may use.

why do people keep saying that if you lower the the minimum mhz you'll get a longer battery life.... you WONT!
read the wiki!!!!

the CPU does NOT IDLE at the lowest frequency (250 MHz) but it SLEEPS at 0 MHz! Thus, reducing the lowest frequency would not reduce power consumption. It is only activated during low workload and may actually consume more power than a higher frequency, as it takes more time to go back to sleep/idle state.

i have a other totally off topic question.
how will nokia recognize that i have overclocked??
i mean if i totally reflash my phone can they see that?
and if then how???isnt there the possibility to make a hack and make the overclock invisible?
or erase the last cpu freq data???

The risk is the overclock will damage the processor physicly, dunno if they check that with a microscope or what

people say no one has bricked a N900 permanently with overclocking yet, but you gotta take in consideration that somtimes the issue will only be noticeable a few years from now

Having spent more than 10 years with embedded programming, I'm well familiar with sleeping processors, thank you, so don't blow a gasket

But where did I claim that the processor would idle at 125 or 250MHz?

What I did mention was the ability of getting a lower clock speed. It isn't as simple as that the processor has a power consumption linear to the clock frequency and that half the clock frequency means twice the the time, ending up with the same power consumption.

A very important fact here is that a higher clock frequency often requires a higher core voltage while a lower clock frequency may allow a reduction of core voltage.

So if you have:
12 0.7500 V 125 MHz
20 0.8500 V 250 MHz
then having the processor perform work (no, not sleep) at 125MHz can make the processor perform X amount of work at twice the time but consuming less power than if performing the same amount of work at 250MHz.

See for example the 7th post (Elanzer @ 04-25-2010 07:14 PM) of this link about some tested core voltage possibilities at different clock speeds:
http://forums.internettablettalk.com...&pp=40&page=84

There really are good reasons why a lot of mobile equipment are using dynamic clock frequencies instead of doing it old style and always stay at max clock frequency and only save power by sleeping between the bursts. The main thing is what clock frequency you can get at lowest possible core voltage - and if longer computation times at lower clock frequencies adds extra power consumption in external hardware that needs to be enabled for a longer time.