Comparison of XFX Radeon RX 590 Fatboy 8GB video card vs Gainward GeForce RTX 3080 Phantom+ LHR 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 Gainward GeForce RTX 3080 Phantom+ LHR runs at 1.440 GHz base clock speed and has 10 GB of GDDR6X memory. The TDP of the first video card is 225 W, and the second is 340 W+ 6 %. Compare the table of benchmark results to find out which graphic card is better.