I have two (2GB VRAM) in SLI and while it works wonders on some games, it also has a fair share or problems. Anyway, I'm thinking about returning one to Amazon (full refund) and selling the other one soon to get a GTX Titan (or 700 series equivalent). I'll have the same performance I have now, but without SLI problems and 6GB of VRAM... for about $200 more.
Opinions?