Comparison of NVIDIA GeForce GTX 1080 Ti video card vs ASRock Radeon RX 6800 Phantom Gaming D 16G OC video card by specs and benchmarks. NVIDIA GeForce GTX 1080 Ti runs at 1.480 GHz base clock speed and has 11 GB of GDDR5X memory, while video card ASRock Radeon RX 6800 Phantom Gaming D 16G OC runs at 1.480 GHz base clock speed and has 16 GB of GDDR6 memory. The weight is different, vs 1306 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.