Comparison of MSI Radeon RX 6600 XT MECH 2X 8G video card vs ASUS TUF Gaming X3 GeForce GTX 1660 TI OC video card by specifications and benchmarks. MSI Radeon RX 6600 XT MECH 2X 8G runs at 1.968 GHz base clock speed and has 8 GB of GDDR6 memory, while video card ASUS TUF Gaming X3 GeForce GTX 1660 TI OC runs at 1.500 GHz base clock speed and has 6 GB of GDDR6 memory. The TDP of the first video card is 160 W, and the second is 120 W. Compare the table of benchmark results to find out which graphic card is better.