Asus Maximus V Extreme.
4x7970, 3x 5870 or 3x 8800GTX.
When I bench full pot the scores go down, strange freezes in the screen.
It starts @ -140 and below in seconds.
Single GPU full pot is ok.
It worked before with the same settings
Wprime at the same speed is ok.
I don't have a second board at hand, but is this a CPU or motherboard problem?