Comparison of Gainward GeForce RTX 2060 Phoenix GS video card vs AMD Radeon RX 6400 - Reference Data video card by specifications and benchmarks. Gainward GeForce RTX 2060 Phoenix GS runs at 1.365 GHz base clock speed and has 6 GB of GDDR6 memory, while video card AMD Radeon RX 6400 - Reference Data runs at base clock speed and has 4 GB of GDDR6 memory. The TDP of the first video card is 190 W+ 19 %, and the second is 53 W. Compare the table of benchmark results to find out which graphic card is better.