Hey, i have 2 gigs or ram in my computer, 2 sticks of the same 512mb DDR2 (200mhz), in slots 1 and 3, then 1 stick of 1Gb in slot 2 (333mhz). my concern is this, most of the time my computer is only using at 25% of my RAM and i was wondering if it uses that 25% from a certain slot, like slot 1. if this so should i switch my slightly faster single stick of ram to slot one and move the other 2 sticks to slots 2 and 4? please let me know, thanks.