Comparison of MSI Radeon RX 5700 XT Mech video card vs GIGABYTE GeForce GTX 1660 D5 6G video card by specifications and benchmarks. MSI Radeon RX 5700 XT Mech runs at 1.605 GHz base clock speed and has 8 GB of GDDR6 memory, while video card GIGABYTE GeForce GTX 1660 D5 6G runs at 1.530 GHz base clock speed and has 6 GB of GDDR5 memory. The TDP of the first video card is 225 W, and the second is 120 W. Compare the table of benchmark results to find out which graphic card is better.