Comparison of GIGABYTE GeForce GTX 1080 WINDFORCE OC 8G video card vs ZOTAC GeForce GTX 1080 OEM video card by specifications and benchmarks. GIGABYTE GeForce GTX 1080 WINDFORCE OC 8G runs at 1.632 GHz+ 2 % base clock speed and has 8 GB of GDDR5X memory, while video card ZOTAC GeForce GTX 1080 OEM runs at 1.607 GHz base clock speed and has 8 GB of GDDR5X memory. The TDP of the first video card is 180 W, and the second is 180 W. Compare the table of benchmark results to find out which graphic card is better.