Comparison of XFX AMD Radeon RX 570 RS 4GB XXX Edition video card vs KFA2 GeForce GTX 1660 Ti Prodigy video card by specifications and benchmarks. XFX AMD Radeon RX 570 RS 4GB XXX Edition runs at 1.168 GHz base clock speed and has 4 GB of GDDR5 memory, while video card KFA2 GeForce GTX 1660 Ti Prodigy runs at 1.500 GHz base clock speed and has 6 GB of GDDR6 memory. The TDP of the first video card is 150 W, and the second is 120 W. Compare the table of benchmark results to find out which graphic card is better.