Comparison of ASRock Radeon RX 6800 Challenger Pro 16G OC video card vs ASUS AREZ Strix Radeon RX Vega 56 OC Gaming video card by specifications and benchmarks. ASRock Radeon RX 6800 Challenger Pro 16G OC runs at 1.750 GHz+ 3 % base clock speed and has 16 GB of GDDR6 memory, while video card ASUS AREZ Strix Radeon RX Vega 56 OC Gaming runs at 1.297 GHz+ 12 % base clock speed and has 8 GB of HBM2 memory. The TDP of the first video card is 250 W, and the second is 300 W+ 43 %. Compare the table of benchmark results to find out which graphic card is better.