Comparison of ASRock Radeon RX 6800 XT Phantom Gaming D 16G OC video card vs ZOTAC GeForce GTX 1080 AMP Edition video card by specifications and benchmarks. ASRock Radeon RX 6800 XT Phantom Gaming D 16G OC runs at 1.875 GHz+ 3 % base clock speed and has 16 GB of GDDR6 memory, while video card ZOTAC GeForce GTX 1080 AMP Edition runs at 1.683 GHz+ 5 % base clock speed and has 8 GB of GDDR5X memory. The TDP of the first video card is 300 W, and the second is 230 W+ 28 %. Compare the table of benchmark results to find out which graphic card is better.