Legit Reviews reports 3DMark11 benchmark results of NVIDIA's upcoming GK107 were leaked. The card scored P3818 on the performance preset of 3DMark11, which seems to put it above the Radeon HD 7770, but it's still an engineering sample with early drivers so the performance of the retail card may be even higher.
The NVIDIA GK107 engineering sample with early drivers scored P3818 on the performance preset of 3DMark11 with an Intel Core i7-3960X processor. We also use this processor on our video card test platform and was able to get P3558 on the AMD Radeon HD 7770 and P3891 on the XFX R7770 Black Edition S Double Dissipation card (See our scores here). The Physics score in the benchmark results looks extremely low, so something is going on there.