Comparison of MSI Radeon RX 6700 XT MECH 2X 12G OC video card vs MSI GeForce RTX 3090 Suprim X 24G video card by specifications and benchmarks. MSI Radeon RX 6700 XT MECH 2X 12G OC runs at 2.321 GHz base clock speed and has 12 GB of GDDR6 memory, while video card MSI GeForce RTX 3090 Suprim X 24G runs at 1.395 GHz base clock speed and has 24 GB of GDDR6X memory. The TDP of the first video card is 230 W, and the second is 420 W+ 20 %. Compare the table of benchmark results to find out which graphic card is better.