Stefan Mileschin

Gigabyte, which gave the GeForce GTX 780 the "GHz Edition" treatment, in which the GPU core is factory-overclocked above the 1 GHz mark, meted out the same with the more powerful GTX 780 Ti. Positioned above the GTX 780 Ti OC Edition which debuted early last month, the GHz Edition features a swanky new custom-design PCB by Gigabyte, which features a strong VRM; coupled with the same WindForce 450W cooling solution that's featured on the GTX 780 GHz Edition. The GTX 780 Ti OC Edition, on the other hand, is a combination of the WindForce 450W cooler and NVIDIA reference PCB, with a factory-overclock.

http://www.techpowerup.com/195390/gi...-detailed.html