Comparison of MSI Radeon RX 5600 XT Gaming M video card vs ASRock Radeon RX 6600 XT Challenger Pro 8GB OC video card by specs and benchmarks. MSI Radeon RX 5600 XT Gaming M runs at 1.130 GHz base clock speed and has 6 GB of GDDR6 memory, while video card ASRock Radeon RX 6600 XT Challenger Pro 8GB OC runs at 1.130 GHz base clock speed and has 8 GB of GDDR6 memory. The weight is different, 922 g vs 834 g. The TDP of the first video card is 160 W, and the second is 160 W . Compare the benchmark results to find out which video card is better.