i just bought some ram of off ebay 1 gb samsung ddr2 pc2 4200 533 mhz and i currently have 512 mb of pc2 3200 400 mhz of the same brand ram. which would be better have 1.5 gigs running at 400 mhz or 1 gig running at 533 mhz. i play alot of battlefield 2 and call of duty. i do some multitasking like recording tv shows doing virus scanning copying dvds and playing a game at the same time so which would be better more ram at slower speed or less ram at higher speed