Comparison of Sapphire Toxic Radeon RX 6900 XT Limited Edition video card vs KFA2 GeForce RTX 3070 Ti EX (1-Click OC) video card by specifications and benchmarks. Sapphire Toxic Radeon RX 6900 XT Limited Edition runs at 1.825 GHz base clock speed and has 16 GB of GDDR6 memory, while video card KFA2 GeForce RTX 3070 Ti EX (1-Click OC) runs at 1.580 GHz base clock speed and has 8 GB of GDDR6X memory. The TDP of the first video card is 400 W+ 33 %, and the second is 290 W. Compare the table of benchmark results to find out which graphic card is better.