nanoneo
Contributor
Another option is to replace 7850 with 7770 ? Can 7770 handle skyrim and other sandbox games at high settings ?
Yes, the 7770 can handle skyrim at high settings at full HD, but that's because Skyrim scales very well and is now a year old. What other games will you be playing? Since you've sold your PS3 I'm guessing you want to future proof yourself. I doubt a 7770 will be able to max out GTA5 on full HD when it comes out a year later.
A 7850 will be more future proof at the added cost of drawing more power of course. You'll have to pair with the Seasonic 520 psu to be safe.