Comparison of XFX Radeon RX 5500 XT Thicc II Pro video card vs ASRock Radeon RX 6500 XT Challenger ITX 4GB video card by specifications and benchmarks. XFX Radeon RX 5500 XT Thicc II Pro runs at 1.607 GHz base clock speed and has 8 GB of GDDR6 memory, while video card ASRock Radeon RX 6500 XT Challenger ITX 4GB runs at 2.200 GHz base clock speed and has 4 GB of GDDR6 memory. The TDP of the first video card is 130 W, and the second is 107 W. Compare the table of benchmark results to find out which graphic card is better.