[SlashPT]

Actually the best bang for buck that I've found on NVIDIA side was getting let's say 3xGTX 760, it simply CAN'T be beaten the price/performance ratio... It costs around 720 euros to get 3 of those cards and there's not a card in the world that would get the same performance even a TITAN would fall way way behind..

EDIT: Forgot to mention this is useless unless you go for resolutions like 5760x1080 (surround system)