Comparison of PowerColor Fighter Radeon RX 6600 video card vs Gainward GeForce RTX 3080 Phantom+ GS LHR video card by specifications and benchmarks. PowerColor Fighter Radeon RX 6600 runs at 1.626 GHz base clock speed and has 8 GB of GDDR6 memory, while video card Gainward GeForce RTX 3080 Phantom+ GS LHR runs at 1.440 GHz base clock speed and has 10 GB of GDDR6X memory. The TDP of the first video card is 132 W, and the second is 370 W+ 16 %. Compare the table of benchmark results to find out which graphic card is better.