Naoh? what speed are you runnin your q9550 at. I also have a 8400 running at 467x9 24/7 and love it. Just iching to upgrade, most extensive stuff I do is a bit of gaming and running my 26" monitor at 1920x1200 with a 4870 vid card. Do do a few decoding jobs or downloading and game at times at the same time. Do you think it was worth it for you? Or anyone else care to answer?