Comparison of ZOTAC GAMING GeForce RTX 2080 AMP Extreme Core video card vs AMD Radeon RX 6400 - Reference Data video card by specifications and benchmarks. ZOTAC GAMING GeForce RTX 2080 AMP Extreme Core runs at 1.515 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 280 W+ 30 %, and the second is 53 W. Compare the table of benchmark results to find out which graphic card is better.