About 120 M/Hash, which is downright abysmal.
My laptop's GTX 660M @33W churns out about 37M/Hash, the GTX 680 demands 100watts, which means it's only slightly better than a laptop at mining, which really should illustrate the futility of mining with it.

I wouldn't really take the advice of the other guy and "buy an AMD card", sure it's a lot better but with ASICS you probably won't earn back what you invested, better to just invest the cash you have in bitcoins anywhere under $110 and profit on that.