Comparison of NVIDIA TITAN X Pascal video card vs ASRock Radeon RX 6800 Challenger Pro 16G OC video card by specifications and benchmarks. NVIDIA TITAN X Pascal runs at 1.417 GHz base clock speed and has 12 GB of GDDR5X memory, while video card ASRock Radeon RX 6800 Challenger Pro 16G OC runs at 1.750 GHz+ 3 % base clock speed and has 16 GB of GDDR6 memory. The TDP of the first video card is 250 W, and the second is 250 W. Compare the table of benchmark results to find out which graphic card is better.