Comparison of GIGABYTE GeForce GTX 1660 MINI ITX OC 6G video card vs Colorful GeForce RTX 3090 NB-V video card by specifications and benchmarks. GIGABYTE GeForce GTX 1660 MINI ITX OC 6G runs at 1.530 GHz base clock speed and has 6 GB of GDDR5 memory, while video card Colorful GeForce RTX 3090 NB-V runs at 1.395 GHz base clock speed and has 24 GB of GDDR6X memory. The TDP of the first video card is 120 W, and the second is 350 W. Compare the table of benchmark results to find out which graphic card is better.