Comparison of MSI GeForce GTX 1660 SUPER GAMING X video card vs MSI GeForce RTX 3090 Suprim X 24G video card by specifications and benchmarks. MSI GeForce GTX 1660 SUPER GAMING X runs at 1.530 GHz base clock speed and has 6 GB of GDDR6 memory, while video card MSI GeForce RTX 3090 Suprim X 24G runs at 1.395 GHz base clock speed and has 24 GB of GDDR6X memory. The TDP of the first video card is 125 W, and the second is 420 W+ 20 %. Compare the table of benchmark results to find out which graphic card is better.