Comparison of GIGABYTE AORUS Radeon RX 6900 XT Master 16G video card vs ASRock Radeon RX 6500 XT Challenger ITX 4GB video card by specifications and benchmarks. GIGABYTE AORUS Radeon RX 6900 XT Master 16G runs at 1.950 GHz+ 7 % base clock speed and has 16 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 300 W, and the second is 107 W. Compare the table of benchmark results to find out which graphic card is better.