Comparison of Gainward GeForce GTX 1660 Ghost OC video card vs ZOTAC GeForce GTX 960 AMP! Edition 2xDVI video card by specifications and benchmarks. Gainward GeForce GTX 1660 Ghost OC runs at 1.530 GHz base clock speed and has 6 GB of GDDR5 memory, while video card ZOTAC GeForce GTX 960 AMP! Edition 2xDVI runs at 1.266 GHz+ 12 % base clock speed and has 2 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.