Go with this, drop the cpu to a 3750k and upgrade the graphics to a 7950.
It's more or less what he has done, if you read the entire thread. 7950 isn't an upgrade, they're basically same performance with some games favoring one driver over another. Also he now has a better case and PSU.
CPU: Intel i5-3570k (4.5GHz) MB: ASUS Z77 Sabertooth (uefi 2003) GPU: Asus 280X TOP (1130MHz/1750MHz) RAM: Corsair LP/LV white 8GB 1600MHz SSD: Samsung 840Pro 256GB + Crucial m4 128GB (040H) PSU: Seasonic 620M CASE: Corsair 500R (White/Black) Monitor: 1440p BenQ GW2765HT 1080p LG 237L-BN IPS Current build! ||Old Build || Bitdefender Total Security 2015 || AV-TEST 2014