Comparison of MSI Radeon RX 6600 XT MECH 2X 8G V1 video card vs ASUS ROG Strix GeForce RTX 3090 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 ASUS ROG Strix GeForce RTX 3090 runs at 1.395 GHz base clock speed and has 24 GB of GDDR6X memory. The TDP of the first video card is 160 W, and the second is 350 W. Compare the table of benchmark results to find out which graphic card is better.