Hi! I can run 13 h orthos small ffts but the blend seems to fail in 50 min. I also got Bsod saying Driver irql less or equal when I tryed to play a game. Next I tried to play it no problems. Oblivion also gave me one error. The windows hd defragment freezen when I try to dedrag. The defragment problem occurs both stock and oc'ed with different bioses(f7,f8i). Could the ram be the issue even though it's running at stock with recommered 2.1? I tried memtest with stock setting two weeks ago and it got 1 pass(didn't have any time to wait longer). I'm going to test with memtest and post the results. There has been some bad geil around. Any ideas? My system is in the signature.