Originally Posted by xfire
but do you see 80Gb and 120 and 160Gb drives with 7.2k. I'm sure with higher capacities there will be more consumption(due to increased number of platters and more movement of the laser head). In any case coming back to the orginal point a 10k would destroy battery life.
compared to what? a hard drive draws a few watts max, I serioulsy doubt it'll be the cause of a low battery life, now a mobile 9800gtx, that might put a serious dent in your battery life.