Comparison of MSI Radeon RX 6900 XT Gaming X Trio 16G video card vs MSI GeForce RTX 3090 Gaming X Trio 24G video card by specifications and benchmarks. MSI Radeon RX 6900 XT Gaming X Trio 16G runs at 1.925 GHz+ 5 % base clock speed and has 16 GB of GDDR6 memory, while video card MSI GeForce RTX 3090 Gaming X Trio 24G runs at 1.395 GHz base clock speed and has 24 GB of GDDR6X memory. The TDP of the first video card is 300 W, and the second is 370 W+ 6 %. Compare the table of benchmark results to find out which graphic card is better.