Comparison of Sapphire Pulse Radeon RX 590 8G G5 video card vs KFA2 GeForce RTX 2080 video card by specifications and benchmarks. Sapphire Pulse Radeon RX 590 8G G5 runs at 1.469 GHz base clock speed and has 8 GB of GDDR5 memory, while video card KFA2 GeForce RTX 2080 runs at 1.515 GHz base clock speed and has 8 GB of GDDR6 memory. The TDP of the first video card is 225 W, and the second is 215 W. Compare the table of benchmark results to find out which graphic card is better.