Comparison of ASRock Radeon RX 6800 XT Phantom Gaming D 16G OC video card vs ZOTAC GeForce GTX 1080 Ti AMP Extreme Core 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 Ti AMP Extreme Core Edition runs at 1.607 GHz+ 9 % base clock speed and has 11 GB of GDDR5X memory. The TDP of the first video card is 300 W, and the second is 320 W+ 28 %. Compare the table of benchmark results to find out which graphic card is better.