Comparison of MSI Radeon RX 6900 XT Gaming Trio 16G video card vs Gainward GeForce RTX 3080 Ti Phoenix video card by specifications and benchmarks. MSI Radeon RX 6900 XT Gaming Trio 16G runs at 1.825 GHz base clock speed and has 16 GB of GDDR6 memory, while video card Gainward GeForce RTX 3080 Ti Phoenix runs at 1.365 GHz base clock speed and has 12 GB of GDDR6X memory. The TDP of the first video card is 300 W, and the second is 350 W. Compare the table of benchmark results to find out which graphic card is better.