Comparison of MSI Radeon RX 6600 XT MECH 2X 8G V1 video card vs Sapphire Radeon RX Vega 64 LE video card by specifications and benchmarks. MSI Radeon RX 6600 XT MECH 2X 8G V1 runs at 1.968 GHz base clock speed and has 8 GB of GDDR6 memory, while video card Sapphire Radeon RX Vega 64 LE runs at 1.247 GHz base clock speed and has 8 GB of HBM2 memory. The TDP of the first video card is 160 W, and the second is 295 W. Compare the table of benchmark results to find out which graphic card is better.