Comparison of ASRock Radeon RX 6800 XT Phantom Gaming D 16G OC video card vs ZOTAC Gaming GeForce RTX 3080 Ti AMP Holo 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 Gaming GeForce RTX 3080 Ti AMP Holo runs at 1.365 GHz base clock speed and has 12 GB of GDDR6X memory. The TDP of the first video card is 300 W, and the second is 350 W. Compare the table of benchmark results to find out which graphic card is better.