Comparison of PowerColor Radeon RX 5700 XT Red Devil Limited Edition video card vs KFA2 GeForce GTX 1660 Ti EX White (1-Click OC) video card by specifications and benchmarks. PowerColor Radeon RX 5700 XT Red Devil Limited Edition runs at 1.770 GHz+ 10 % base clock speed and has 8 GB of GDDR6 memory, while video card KFA2 GeForce GTX 1660 Ti EX White (1-Click OC) runs at 1.500 GHz base clock speed and has 6 GB of GDDR6 memory. The TDP of the first video card is 225 W, and the second is 120 W. Compare the table of benchmark results to find out which graphic card is better.