Comparison of KFA2 GeForce GTX 960 Reference Design OC video card vs GIGABYTE GeForce GTX 960 WINDFORCE 2X OC 4GB Rev. 1 video card by specs and benchmarks. KFA2 GeForce GTX 960 Reference Design OC runs at 1.152 GHz+ 2 % base clock speed and has 4 GB of GDDR5 memory, while video card GIGABYTE GeForce GTX 960 WINDFORCE 2X OC 4GB Rev. 1 runs at 1.152 GHz+ 2 % base clock speed and has 4 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.