I'm saving to buy a new 270X but I was wondering if I buy another HD6850 to put on Crossfire, is it going to be anywhere close to a single R9 270X? Or I will still be far behind? I want to play titles like the new upcoming Evil Within on 2560x1440 resolution moderate to high settings. Not maximum. Cpu is a Phenom II x4 965 @ 4GHz