Comparison of Colorful iGame GeForce GTX 1080 Ti Vulcan X OC-V video card vs ASRock Radeon RX 6750 XT Phantom Gaming D 12GB OC video card by specs and benchmarks. Colorful iGame GeForce GTX 1080 Ti Vulcan X OC-V runs at 1.480 GHz base clock speed and has 11 GB of GDDR5X memory, while video card ASRock Radeon RX 6750 XT Phantom Gaming D 12GB OC runs at 1.480 GHz base clock speed and has 12 GB of GDDR6 memory. The weight is different, -- vs 1187 g. The TDP of the first video card is 250 W, and the second is 250 W . Compare the benchmark results to find out which video card is better.