Comparison of PowerColor Liquid Devil Radeon RX 6800 XT video card vs MSI Radeon RX 6900 XT Gaming X Trio 16G video card by specs and benchmarks. PowerColor Liquid Devil Radeon RX 6800 XT runs at 1.900 GHz+ 4 % base clock speed and has 16 GB of GDDR6 memory, while video card MSI Radeon RX 6900 XT Gaming X Trio 16G runs at 1.900 GHz+ 4 % base clock speed and has 16 GB of GDDR6 memory. The weight is different, -- vs 1576 g. The TDP of the first video card is 300 W, and the second is 300 W . Compare the benchmark results to find out which video card is better.