Comparison of PowerColor Radeon RX 5600 XT video card vs Gainward GeForce GTX 1080 Ti Phoenix GS video card by specifications and benchmarks. PowerColor Radeon RX 5600 XT runs at 1.130 GHz base clock speed and has 6 GB of GDDR6 memory, while video card Gainward GeForce GTX 1080 Ti Phoenix GS runs at 1.556 GHz+ 5 % 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.