Comparison of XFX Radeon RX Vega 64 Black Fan video card vs KFA2 GeForce RTX 3090 HOF Premium video card by specifications and benchmarks. XFX Radeon RX Vega 64 Black Fan runs at 1.247 GHz base clock speed and has 8 GB of HBM2 memory, while video card KFA2 GeForce RTX 3090 HOF Premium runs at 1.395 GHz base clock speed and has 24 GB of GDDR6X memory. The TDP of the first video card is 295 W, and the second is 420 W+ 20 %. Compare the table of benchmark results to find out which graphic card is better.