Comparison of ASRock Radeon RX 5500 XT Challenger D 8G OC video card vs GALAX GeForce RTX 2080 Ti OC video card by specifications and benchmarks. ASRock Radeon RX 5500 XT Challenger D 8G OC runs at 1.685 GHz+ 5 % base clock speed and has 8 GB of GDDR6 memory, while video card GALAX GeForce RTX 2080 Ti OC runs at 1.350 GHz base clock speed and has 11 GB of GDDR6 memory. The TDP of the first video card is 130 W, and the second is 250 W. Compare the table of benchmark results to find out which graphic card is better.