Comparison of MSI Radeon RX 6600 MECH 2X 8G video card vs Gainward GeForce RTX 3080 Phantom V1 LHR video card by specifications and benchmarks. MSI Radeon RX 6600 MECH 2X 8G runs at 1.626 GHz base clock speed and has 8 GB of GDDR6 memory, while video card Gainward GeForce RTX 3080 Phantom V1 LHR runs at 1.440 GHz base clock speed and has 10 GB of GDDR6X memory. The TDP of the first video card is 132 W, and the second is 340 W+ 6 %. Compare the table of benchmark results to find out which graphic card is better.