I know it's not a 79X0
But I run 7870's and haven't had a single issue yet.
I play FarCry3, Mass Effect 3 , just started the beta of Crysis and hope to give Dead Space a go this weekend. If I wasn't target practice for every Black Op's player on the planet, I'd play that more.
All play without a single hiccup, Highly recommend the second card.