comparing cards clock to clock isn't the best way to gauge max performance.

At the same core/shader/mem speed a G80 GTX will beat a G92 GTS.

But once you push both of them to their limit, the G92 does much better, because it clocks much higher.

With the new mem (really .83ns?) the mem stock manufacturer clocks will be 2400mhz, and then new power section, this card should overclock nicely.