Comparison of ASRock Radeon RX 6900 XT Phantom Gaming D 16G OC video card vs Colorful iGame GeForce GTX 1080 Ti Vulcan AD-V video card by specifications and benchmarks. ASRock Radeon RX 6900 XT Phantom Gaming D 16G OC runs at 1.925 GHz+ 5 % base clock speed and has 16 GB of GDDR6 memory, while video card Colorful iGame GeForce GTX 1080 Ti Vulcan AD-V 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.