Since a total of zero people have bricked their N900s due to overclocking, not many are likely to come crying.

im using QCPUFreq but it only allows you to change the max freq, so when you choose 1000Mhz its 250 - 1000 with decent not mora than 32 temp.

Well, so far, I just had to try it myself to see what the hype was all about..

clocked at 250 900 for a number of days now.. I would say... slight increase in response and loading speed... probably less lag in games and running multiple apps... I regularly don't open too many anyway... tried opening like 20++ apps on purpose and it did slow down a little bit in response time between switching like how it was at 600Mhz.. but maybe just slightly less..

but battery life has indeed been slightly better which is really funny... I don't think I've used it any less than I have when it was at 600Mhz but it is a little bit hotter when charging.. checking the temp every now and then still indicates CPU heat at about 35-38 C

So... I guess... erm... short term effects...

... slightly better speed
... slightly better response
... slightly better battery life
... slightly hotter charging temp

So... probably it's alright now... but if I find anything worrisome, I'll just revert it back.

Don't think I'll go to 1Ghz cause I did that for a short while and the difference in speed was not noticeable compared to the 900Mhz...

Use transition control and reduce the time transitions take (all mine are at 5 except rotation% which is at 15) and install swappolube and use the proposed settings, this will make your phone fly.

... just adding to the previous post..

sometimes, after being idle for a little while, the CPU temp does indicate as low as 24-28 C... so this shows that the CPU isn't really being too stressed out idly... well, the minimum is at 250... I did try putting it to 500Mhz minimum but noticed quite a drop in battery life which prompted me to try out the 250Mhz... but I did read somewhere that at some frequencies, it's better at 500Mhz...

... and voltage is set to lv

There is no way to read cpu temp.
What you are viewing is battery temp.

there hasn't been much input about this app and so far, some have said that the default transitions are better...

haven't tried swappolube... is that a stable programme? Searching as I'm replying this

What? There's been loads. And in what way are the slow transitions better?
It still uses the default transitions, just sped up.

Yes

Sorry for not knowing this cause I use the QCPUfreq and cpufrequi which both states cpu temp... so I automatically assume so...

about swappolube, do i just click on proposed settings and don't temper with anything else? could you give me a short walkthrough EXACTLY how to make my n900 fly? thanks man

Click proposed, click apply. Simple. Don't mess with the proposed settings until you know exactly what they do.