Comparison of PowerColor Liquid Devil Radeon RX 6900 XT Ultimate video card vs Gainward GeForce RTX 2060 Ghost OC 12GB video card by specifications and benchmarks. PowerColor Liquid Devil Radeon RX 6900 XT Ultimate runs at 1.825 GHz base clock speed and has 16 GB of GDDR6 memory, while video card Gainward GeForce RTX 2060 Ghost OC 12GB runs at 1.470 GHz base clock speed and has 12 GB of GDDR6 memory. The TDP of the first video card is 300 W, and the second is 185 W. Compare the table of benchmark results to find out which graphic card is better.