I have been trying to get these cards work on SLI, but so far it looks like its impossible to get working.
After fequent crashes in Killing floor 2 I put cards to run GPUGrid and found that its lower card that fails units.
Tried to swap card places, no difference.
Changed old 1200W Chiftec PSU to 1300W Power Flower, no difference.
Changed lower card place to middle slot (Asus desired place for SLI), no difference.
Put another SLI bridge between cards. Ran furthest, but stil failed at around 3 hours.
Are these cards how sensitive for PCI-e lines? Only thing to test is set all oc in mobo to stock (cause cards already are). I´v been running PCI-e on 115MHz and bit over volted last 4 years without any problems with SLI or single cards.
I like how these are working as single after crappy Asus Poseidon which only did 1405/7600 stable, but I wont have use for 2 cards if I cant get these work in SLI.