if you want to over clock and are about shattering the benchmarks, definitly get the e6600 get the crucial 10 aniv and SLI IS worth it, with the second card you get a 50% higher score if your not gonna go sli get a 7950 gx2 or if got the money 8800gtx
whats the real diff between memory?? know it has to do with timing and voltage but not that well versed.
not real crazy about gfx..... like watching movies from comp on tv and playin some games but I work a lot and it's not a huge concern of mine. So I don't think I'll go overboard tryin to get multiple $600 cards and the like lol.