Comparison of PowerColor Radeon RX Vega 56 Nano Edition video card vs KFA2 GeForce RTX 3090 HOF video card by specifications and benchmarks. PowerColor Radeon RX Vega 56 Nano Edition runs at 1.156 GHz base clock speed and has 8 GB of HBM2 memory, while video card KFA2 GeForce RTX 3090 HOF runs at 1.395 GHz base clock speed and has 24 GB of GDDR6X memory. The TDP of the first video card is 210 W, and the second is 420 W+ 20 %. Compare the table of benchmark results to find out which graphic card is better.