There was some guy who got 7 680's working a while ago (I think it was a GPGPU thing, though. AFAIK you can still only use 4 GPUs for gaming, and a lot of people seem to find going over 3 makes things worse) but apparently - and this being the source of the thread, iirc - the 8th just refused to happen. Likewise it seems when I read reviews of this thing, people are excited about using it for everything but gaming. Though since it was outperformed by both the 690 and one of the AMD cards it was compared to (guessing also their latest dual-GPU card, but it's hard enough for me to remember what nVIDIA is up to and they've only got 3 numbers per name) I'm not terribly surprised.