3DMark Vantage is a full DirectX 10 compliant synthetic benchmark designed to test the DirectX 10 abilities of your video card and computing power of your PC. After the benchmark completes you are given a report card of the performance and are given the option to submit the results to Futuremark where they can be ranked against others with similar hardware.
Performance Settings - Benchmarks Only
Vantage is our first DirectX 10 benchmark and also the first reversal in performance where DX11 optimizations are no longer a factor and pure multithreaded performance takes over. Given that the GTX 780 Ti has more cuda cores that explains why the card is faster in this test.