The obvious choice is the 980.It performs better in 99,9% of all games than the 390x.It also overclocks like a beast and it draws much less power than the 390x,meaning that if you have a decent 700+ watt psu,SLI wont mean paying for a new one(390x in cf requires about 900w to be safe).Also dont be fooled by the 8gigs of vram;Paul recently reviewed the card and the 390x will run out of power far sooner than those 8gigs will prove to be useful.I just got a 980 sc edition and i love it! Boosts up to 1400mhz by its own