Comparison of PowerColor Radeon RX 5700 video card vs AMD Radeon RX 6400 - Reference Data video card by specifications and benchmarks. PowerColor Radeon RX 5700 runs at 1.465 GHz base clock speed and has 8 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 180 W, and the second is 53 W. Compare the table of benchmark results to find out which graphic card is better.