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 a test of pure tracing performance, the 3DMark DXR feature test shows the 4070 to be 8% faster than the RTX 3080 and 7% slower than the RTX 3090. It's 19% faster than AMD's RX 7900 XT.