Nice idea, reinob (tests). As for locking to (for example) 900 mhz, I would not recommend this, due it being "overclocked" (500 mhz is standard frequency). It may be just placebo, but I would not like to "stress" CPU with higher voltage and frequency for 100% of running time.

As for things that doesn't force frequency jump, it's a matter of fact, that on 250 mhz it take 2x more time than on 500 mhz (usually - we're talking about things that doesn't involve high I/O from disk etc). so you benefit from more idle time = no leakage during 0mhz period. At the same time, een on 500 mhz CPu isn't overclocked (600 mhz is stock max frequency, but it *is* factory overclocked, according to CPU specifications).

/Estel