Comparison of XFX Radeon RX 5600 XT Thicc II Pro video card vs PowerColor Red Devil Radeon RX 6600 XT video card by specs and benchmarks. XFX Radeon RX 5600 XT Thicc II Pro runs at 1.235 GHz+ 9 % base clock speed and has 6 GB of GDDR6 memory, while video card PowerColor Red Devil Radeon RX 6600 XT runs at 1.235 GHz+ 9 % base clock speed and has 8 GB of GDDR6 memory. The weight is different, -- vs --. The TDP of the first video card is 160 W, and the second is 160 W . Compare the benchmark results to find out which video card is better.