Comparison of MSI GeForce GTX 1660 VENTUS XS 6G OCV1 video card vs Gainward GeForce RTX 3090 Phoenix video card by specifications and benchmarks. MSI GeForce GTX 1660 VENTUS XS 6G OCV1 runs at 1.530 GHz base clock speed and has 6 GB of GDDR5 memory, while video card Gainward GeForce RTX 3090 Phoenix runs at 1.395 GHz base clock speed and has 24 GB of GDDR6X memory. The TDP of the first video card is 130 W+ 8 %, and the second is 350 W. Compare the table of benchmark results to find out which graphic card is better.