Comparison of GIGABYTE GeForce GTX 960 WINDFORCE 2X OC 4GB Rev. 1 video card vs KFA2 GeForce GTX 1660 EX (1-Click OC) video card by specs and benchmarks. GIGABYTE GeForce GTX 960 WINDFORCE 2X OC 4GB Rev. 1 runs at 1.216 GHz+ 8 % base clock speed and has 4 GB of GDDR5 memory, while video card KFA2 GeForce GTX 1660 EX (1-Click OC) runs at 1.216 GHz+ 8 % base clock speed and has 6 GB of GDDR5 memory. The weight is different, -- 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.