Comparison of PowerColor Hellhound Radeon RX 6700 XT video card vs KFA2 GeForce RTX 2080 Ti OC video card by specifications and benchmarks. PowerColor Hellhound Radeon RX 6700 XT runs at 2.321 GHz base clock speed and has 12 GB of GDDR6 memory, while video card KFA2 GeForce RTX 2080 Ti OC runs at 1.350 GHz base clock speed and has 11 GB of GDDR6 memory. The TDP of the first video card is 230 W, and the second is 250 W. Compare the table of benchmark results to find out which graphic card is better.