Comparison of ASRock Radeon RX 5700 XT Challenger D 8G OC video card vs PowerColor Radeon RX Vega 64 Limited Edition video card by specifications and benchmarks. ASRock Radeon RX 5700 XT Challenger D 8G OC runs at 1.650 GHz+ 3 % base clock speed and has 8 GB of GDDR6 memory, while video card PowerColor Radeon RX Vega 64 Limited Edition runs at 1.247 GHz base clock speed and has 8 GB of HBM2 memory. The TDP of the first video card is 225 W, and the second is 295 W. Compare the table of benchmark results to find out which graphic card is better.