Comparison of XFX Radeon RX 590 Fatboy 8GB video card vs KFA2 GeForce RTX 3090 HOF Limited Edition video card by specifications and benchmarks. XFX Radeon RX 590 Fatboy 8GB runs at 1.469 GHz base clock speed and has 8 GB of GDDR5 memory, while video card KFA2 GeForce RTX 3090 HOF Limited Edition runs at 1.395 GHz base clock speed and has 24 GB of GDDR6X memory. The TDP of the first video card is 225 W, and the second is 420 W+ 20 %. Compare the table of benchmark results to find out which graphic card is better.