Comparison of PowerColor Radeon RX 6800 video card vs Sapphire Nitro+ Radeon RX 6800 XT video card by specifications and benchmarks. PowerColor Radeon RX 6800 runs at 1.700 GHz base clock speed and has 16 GB of GDDR6 memory, while video card Sapphire Nitro+ Radeon RX 6800 XT runs at 1.925 GHz+ 5 % base clock speed and has 16 GB of GDDR6 memory. The TDP of the first video card is 250 W, and the second is 300 W. Compare the table of benchmark results to find out which graphic card is better.