Comparison of ASUS ROG Strix Radeon RX 6750 XT OC Edition video card vs ASRock Radeon RX 6800 Challenger Pro 16G OC video card by specs and benchmarks. ASUS ROG Strix Radeon RX 6750 XT OC Edition runs at 2.200 GHz base clock speed and has 12 GB of GDDR6 memory, while video card ASRock Radeon RX 6800 Challenger Pro 16G OC runs at 2.200 GHz base clock speed and has 16 GB of GDDR6 memory. The weight is different, -- vs 1250 g. The TDP of the first video card is 250 W, and the second is 250 W . Compare the benchmark results to find out which video card is better.