Comparison of ASUS ROG Strix Radeon RX Vega 56 OC Gaming video card vs ZOTAC GeForce GTX 1080 Ti AMP Extreme video card by specifications and benchmarks. ASUS ROG Strix Radeon RX Vega 56 OC Gaming runs at 1.297 GHz+ 12 % base clock speed and has 8 GB of HBM2 memory, while video card ZOTAC GeForce GTX 1080 Ti AMP Extreme runs at 1.645 GHz+ 11 % base clock speed and has 11 GB of GDDR5X memory. The TDP of the first video card is 300 W+ 43 %, and the second is 320 W+ 28 %. Compare the table of benchmark results to find out which graphic card is better.