Aah and i want to add, i also have a 5870 card, 2,5-3 years now? The card is awesome, i disassembled the heatsink/fan to reapply thermal grease and use msi afterburner to keep the temps less than 70 at full overclocks. The only game that has bad fps and is unplayable for my standards (less than 30fps) is Crysis 3 at 1920x1200 on high detail.
I wanted to find another 5870 to xfire but guess what, they still sell at half their original price! This shows how good they are. And also shows that AMD along NVIDIA have some issues at performance the last 2 years...