Comparison of MSI Radeon RX 6600 MECH 2X 8G video card vs Colorful GeForce GTX 1660 Ti 6G-V 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 Colorful GeForce GTX 1660 Ti 6G-V runs at 1.500 GHz base clock speed and has 6 GB of GDDR6 memory. The TDP of the first video card is 132 W, and the second is 120 W. Compare the table of benchmark results to find out which graphic card is better.