not bad, but I am using OCZ XMP 6 gig rated for 1600, and I have it running at 1866 with the timmings of 8-8-8-24-82-4-4-4-4. My I7 is at 3.75Ghz with Turbo mode on for a total of 3.937Ghz. My temps run in the 40c range (water cooled). Im pettry sure my ram was cheaper to, you just need to know how overclocking works in the long run to have a stable system. Originally, my system would get a blue screen alot due to bad ram timmings. when I figured out which one to change, I fixed the problem. it was the 82 value, it was at 65. at 72 did it less often but had problems in some games. 78, even better, did it once a week though. at 82 perfect, no prob. I use a foxconn bloodrage board.