Comparison of PowerColor Radeon RX 5700 XT Liquid Devil Limited Edition video card vs ASRock Radeon RX 6600 XT Challenger ITX 8GB video card by specifications and benchmarks. PowerColor Radeon RX 5700 XT Liquid Devil Limited Edition runs at 1.900 GHz+ 18 % 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.