Comparison of PowerColor Red Devil Radeon RX 6600 XT video card vs KFA2 GeForce GTX 1080 Ti EX OC DuraPro video card by specifications and benchmarks. PowerColor Red Devil Radeon RX 6600 XT runs at 2.188 GHz+ 11 % base clock speed and has 8 GB of GDDR6 memory, while video card KFA2 GeForce GTX 1080 Ti EX OC DuraPro runs at 1.531 GHz+ 3 % base clock speed and has 11 GB of GDDR5X memory. The TDP of the first video card is 160 W, and the second is 250 W. Compare the table of benchmark results to find out which graphic card is better.