Comparison of MSI GeForce GTX 1660 GAMING X 6G video card vs ZOTAC GeForce GTX 960 Reference video card by specs and benchmarks. MSI GeForce GTX 1660 GAMING X 6G runs at 1.530 GHz base clock speed and has 6 GB of GDDR5 memory, while video card ZOTAC GeForce GTX 960 Reference runs at 1.530 GHz base clock speed and has 2 GB of GDDR5 memory. The weight is different, 845 g vs --. The TDP of the first video card is 120 W, and the second is 120 W . Compare the benchmark results to find out which video card is better.