"Nvidia doesn’t allow its partners to sell the GeForce GTX Titan Black with proprietary cooling. However, Gigabyte now offers a GHz Edition of the card that comes bundled with its WindForce solution, which you can install on the overclocked board yourself.
We didn't review Nvidia's GeForce GTX Titan Black when it launched. The company didn't see fit to sample press. And understandably, really, since the Titan Black is largely the same as a 780 Ti with 6 GB of memory and the GK110's full FP64 performance. GeForce GTX Titan Black does sport slightly more aggressive reference clock rates. Its base frequency is 889 MHz to the 780 Ti's 875 MHz. Typical GPU Boost is stated at 980 MHz versus 928. But they both sport similar coolers, display outputs, and graphics card power ratings."
