Comparison of PowerColor Hellhound Radeon RX 6600 video card vs Palit GeForce GTX 1660 SUPER GP 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 Palit GeForce GTX 1660 SUPER GP runs at 1.530 GHz base clock speed and has 6 GB of GDDR6 memory. The TDP of the first video card is 132 W, and the second is 125 W. Compare the table of benchmark results to find out which graphic card is better.