Got a I5 gigabyte ud3 gskill ripjaw 1600 and a coolermaster hsf, it runs great it has made a big difference in rise of flight, i had 20 planes in the air and it was choppy now its smooth with 40, il2 is better too, as for other games well i cant see any difference tbh, the cpu never goes above 51c and its running turbo mode so 3.3 gig. The hsf seems to holding up fine. but I doubt it would hold up to 4 gigs. Is it much better than my old 6850 yes esp in the 2 flight sims i play and my 6850 is in my sugo sg1 so its not wasted. Im buying a house so I decided to take the plunge before the wife tightens the purse strings.