I was toying with it last night and wow!!!
It is fast, very silent (more so than my previous system), and i can play HL2 with everything of high, full etc. without the Alien even breaking a sweat!!!
Did video stress in counterstrike with all options on high, 16x AS and 6X AA. It gave 131.35 FPS. Also the free version of 3dmark05 gave it 5906 points. I have no clue if this is any good, heck i don't even care just as long as i can play all my games on full...