Comparison of MSI Radeon RX 6900 XT Gaming Z Trio 16G video card vs MSI GeForce GTX 1660 AERO ITX 6G OC video card by specifications and benchmarks. MSI Radeon RX 6900 XT Gaming Z Trio 16G runs at 1.925 GHz+ 5 % base clock speed and has 16 GB of GDDR6 memory, while video card MSI GeForce GTX 1660 AERO ITX 6G OC runs at 1.530 GHz base clock speed and has 6 GB of GDDR5 memory. The TDP of the first video card is 300 W, and the second is 130 W+ 8 %. Compare the table of benchmark results to find out which graphic card is better.