MEGAsizeGPU is the first to leak RTX 4080 3DMark scores from TimeSpy tests. The leaker shows scores of 14718 graphics points in TimeSpy and 28599 graphics points in TimeSpy Extreme. 

This is about what was expected from this card based on leaks and official data about how well it plays games. The boost clock on the RTX 4080 is almost the same as the boost clock on the RTX 4090 (2508 MHz vs. 2520 MHz). The card that was tested is probably a factory-overclocked model since the leaker showed pictures of the packaging for Inno3D's RTX 4080 iChill X3 earlier.

In the end this is 50% ~ 55% more performance than with the RTX 3080 12GB model. RTX 4080 is ~30% faster than RTX 3090 Ti. In extreme 4K, the RTX 4090 seems to be ~ 35% faster than the RTX 4080.

NVIDIA GeForce RTX 4080 3DMark TimeSpy scores leak