Advice on new gpu

Monsteryoung

Honorable
Oct 10, 2013
15
0
10,510
System specs first off:
cpu:E8400 @3.67 ghz
Motherboard: gigabyte p43 es3g rev 1.0
Power suply 600w thermatake tr2
Ram:2 sticks of 2 gigs pc2 6400

I currently have a 2Gb galaxy 650 gtx ti boost thats dying. It artifacts but at times it maintains a normal operation for a couple seconds sometimes into minutes. regardless i was looking for an upgrade I would rma this one but i threw away the proof of purchase like a fool so now im asking you guys what would be a good match with my system?