the n900's CPU can switch or change freqs in a split second, and the ondemand governor quickly sets the cpufreq to the max when stress is loaded and jumps to the lowest freq when idle.

so yeah, ondemand is recomended. based on what i read.

i tried both governors and what i notice is they actually have the same effect. (but i have no idea why the conservative gov takes longer time of using the device before it produce heat).

im still experimenting.