MSI NX7600GS-T2D256EH

You are right to have thought that the GeForce 7600 GT is the rightful 'successor' to the GeForce 6600 GT. But NVIDIA is not done yet and the real GeForce 6600 GT killer is none other than the GeForce 7600 GS, a card that blurs the distinction between the low and mid-range with its price and performance.