Comparison of ASUS ROG Strix Radeon RX 6600 XT OC video card vs Sapphire Toxic Radeon RX 6900 XT Limited Edition video card by specifications and benchmarks. ASUS ROG Strix Radeon RX 6600 XT OC runs at 2.000 GHz+ 2 % base clock speed and has 8 GB of GDDR6 memory, while video card Sapphire Toxic Radeon RX 6900 XT Limited Edition runs at 1.825 GHz base clock speed and has 16 GB of GDDR6 memory. The TDP of the first video card is 160 W, and the second is 400 W+ 33 %. Compare the table of benchmark results to find out which graphic card is better.