Comparison of ASRock Radeon RX 6800 XT Phantom Gaming D 16G OC video card vs GIGABYTE GeForce GTX 1080 Ti Turbo 11G 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 GIGABYTE GeForce GTX 1080 Ti Turbo 11G runs at 1.480 GHz base clock speed and has 11 GB of GDDR5X memory. The TDP of the first video card is 300 W, and the second is 280 W+ 12 %. Compare the table of benchmark results to find out which graphic card is better.