Comparison of XFX Radeon RX Vega 64 Black Fan video card vs ZOTAC GAMING GeForce RTX 2080 Ti AMP Extreme video card by specifications and benchmarks. XFX Radeon RX Vega 64 Black Fan runs at 1.247 GHz base clock speed and has 8 GB of HBM2 memory, while video card ZOTAC GAMING GeForce RTX 2080 Ti AMP Extreme runs at 1.350 GHz base clock speed and has 11 GB of GDDR6 memory. The TDP of the first video card is 295 W, and the second is 300 W+ 20 %. Compare the table of benchmark results to find out which graphic card is better.