Comparison of ZOTAC GeForce GTX 960 AMP! Edition 4GB video card vs MSI GeForce GTX 1660 VENTUS XS 6G video card by specifications and benchmarks. ZOTAC GeForce GTX 960 AMP! Edition 4GB runs at 1.266 GHz+ 12 % base clock speed and has 4 GB of GDDR5 memory, while video card MSI GeForce GTX 1660 VENTUS XS 6G runs at 1.530 GHz base clock speed and has 6 GB of GDDR5 memory. The TDP of the first video card is 120 W, and the second is 120 W. Compare the table of benchmark results to find out which graphic card is better.