Originally Posted by aliensub
I would keep the 80GB, I more need the space than the spinning It hasn´t bothered me with the slower 4200rpm yet. But again, it´s a personal preference.
On Tom´s hardwareguide there is a test between a 4200, 5400 and 7200 rpm disk, on the things you mention (heat, power consumin etc.) There where no noticable difference between the 5400 & 7200 disks in power consumption.