Comparison of ASRock Radeon RX 6700 XT Challenger D 12GB video card vs MSI Radeon RX Vega 64 Air Boost 8G OC video card by specifications and benchmarks. ASRock Radeon RX 6700 XT Challenger D 12GB runs at 2.321 GHz base clock speed and has 12 GB of GDDR6 memory, while video card MSI Radeon RX Vega 64 Air Boost 8G OC runs at 1.272 GHz+ 2 % base clock speed and has 8 GB of HBM2 memory. The TDP of the first video card is 230 W, and the second is 295 W. Compare the table of benchmark results to find out which graphic card is better.