Comparison of GALAX GeForce GTX 960 Reference Design OC video card vs ZOTAC GeForce GTX 960 2xDVI video card by specs and benchmarks. GALAX 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 ZOTAC GeForce GTX 960 2xDVI runs at 1.152 GHz+ 2 % base clock speed and has 2 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.