Comparison of Sapphire Pulse Radeon RX 5500 XT 8G video card vs PowerColor Radeon RX 6800 Red Devil Limited Edition video card by specifications and benchmarks. Sapphire Pulse Radeon RX 5500 XT 8G runs at 1.607 GHz base clock speed and has 8 GB of GDDR6 memory, while video card PowerColor Radeon RX 6800 Red Devil Limited Edition runs at 1.850 GHz+ 9 % base clock speed and has 16 GB of GDDR6 memory. The TDP of the first video card is 135 W+ 4 %, and the second is 250 W. Compare the table of benchmark results to find out which graphic card is better.