Comparison of ASUS ROG Strix Radeon RX 5700 XT OC video card vs ASRock Radeon RX 6600 XT Challenger ITX 8GB video card by specifications and benchmarks. ASUS ROG Strix Radeon RX 5700 XT OC runs at 1.840 GHz+ 15 % base clock speed and has 8 GB of GDDR6 memory, while video card ASRock Radeon RX 6600 XT Challenger ITX 8GB runs at 1.968 GHz base clock speed and has 8 GB of GDDR6 memory. The TDP of the first video card is 225 W, and the second is 160 W. Compare the table of benchmark results to find out which graphic card is better.