Comparison of MSI Radeon RX 6800 XT Gaming X Trio 16G video card vs XFX Radeon RX 7900 XT video card by specs and benchmarks. MSI Radeon RX 6800 XT Gaming X Trio 16G runs at 1.850 GHz+ 1 % base clock speed and has 16 GB of GDDR6 memory, while video card XFX Radeon RX 7900 XT runs at 1.850 GHz+ 1 % base clock speed and has 20 GB of GDDR6 memory. The weight is different, 1551 g vs --. 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.