Comparison of PowerColor Hellhound Radeon RX 6600 video card vs KFA2 GeForce GTX 1070 Ti Red Edition video card by specifications and benchmarks. PowerColor Hellhound Radeon RX 6600 runs at 1.626 GHz base clock speed and has 8 GB of GDDR6 memory, while video card KFA2 GeForce GTX 1070 Ti Red Edition runs at 1.607 GHz base clock speed and has 8 GB of GDDR5 memory. The TDP of the first video card is 132 W, and the second is 180 W. Compare the table of benchmark results to find out which graphic card is better.