Oh and the 5770 can pull 220MHs with a nice overclock, (was the first ATI card to ever breach 1GHz on air with voltage tweak.)
Still isn't as nice as a 5830 if you can find one for 100$, but the 5830 is bout as hungry as a 5870 at times.
Do i need any additional cooling system if i overclock the 5770?