Comparison of ZOTAC GeForce GTX 1080 Ti Founders Edition video card vs ASRock Radeon RX 6500 XT Phantom Gaming D 4GB OC video card by specifications and benchmarks. ZOTAC GeForce GTX 1080 Ti Founders Edition runs at 1.480 GHz base clock speed and has 11 GB of GDDR5X memory, while video card ASRock Radeon RX 6500 XT Phantom Gaming D 4GB OC runs at 2.200 GHz base clock speed and has 4 GB of GDDR6 memory. The TDP of the first video card is 250 W, and the second is 107 W. Compare the table of benchmark results to find out which graphic card is better.