Real-time ray tracing is incredibly demanding. The latest graphics cards have dedicated hardware that’s optimized for ray-tracing. The 3DMark DirectX Raytracing feature test measures the performance of this dedicated hardware. Instead of using traditional rendering techniques, the whole scene is ray-traced and drawn in one pass. The result of the test depends entirely on ray-tracing performance. (UL).
As for 3DMark's DXR feature test, the results here are a lot closer. This test seems less clock-speed dependant, and as such the AMP Extreme Holo is only fractionally faster than the other two RTX 3090s we have tested.