when running 3 of these cards i get inconsistant results. if i get a crash during benchmarking windows will not load (hang on logo) untill drivers are removed (in safe mode) and the 3rd card is removed.
after i re-install the drivers i can add the 3rd card again but most times it crashes all games.
with the 3rd card removed everything works fine.
asus rampage iv extreme
64 gigs gskill 1333 ram
3 x asus 7970 dc2t
1500w enermax power supply
vertex 3 240gb ssd
all 7970 drivers same results.
at one point yesterday everything was fine with 3 cards then i got a crash and it has not been stable since.
no extra overclocking at the time of the crash.