Comparison of PowerColor Hellhound Radeon RX 6600 video card vs KFA2 GeForce GTX 1060 EXOC 3GB 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 1060 EXOC 3GB runs at 1.544 GHz+ 3 % base clock speed and has 3 GB of GDDR5 memory. The TDP of the first video card is 132 W, and the second is 120 W. Compare the table of benchmark results to find out which graphic card is better.