Comparison of Sapphire Pulse Radeon RX 590 8G G5 video card vs ASUS TUF GAMING Radeon RX 6900 XT TOP Edition 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 ASUS TUF GAMING Radeon RX 6900 XT TOP Edition runs at 2.135 GHz+ 17 % base clock speed and has 16 GB of GDDR6 memory. The TDP of the first video card is 225 W, and the second is 300 W. Compare the table of benchmark results to find out which graphic card is better.