) but i'm not sure. If your RAM does contain the D9's then you will need to either buy the same RAM (Or RAM containing the D9's) or replace your current RAM.imho neither mate. i got 2gigs team xtreeme 6400c4 and its more than enough for gaming with e6850 @ 3.9ghz. although they do say that you need more memory with vista. why do you think you need more/better memory