Comparison of ASUS TUF Gaming Radeon RX 6800 XT OC video card vs Sapphire Nitro+ Radeon RX 6900 XT video card by specifications and benchmarks. ASUS TUF Gaming Radeon RX 6800 XT OC runs at 1.875 GHz+ 3 % base clock speed and has 16 GB of GDDR6 memory, while video card Sapphire Nitro+ Radeon RX 6900 XT runs at 1.825 GHz base clock speed and has 16 GB of GDDR6 memory. The TDP of the first video card is 300 W, and the second is 340 W+ 13 %. Compare the table of benchmark results to find out which graphic card is better.