Gigabyte Water Force, as the name suggests, is a water-cooling system partially mounted outside the case. Water Force comes with three GeForce GTX 780 Ti graphics cards in one package, so itís not only a cooling system, but complete graphics computing solution with some neat features. The front panel gives you full access to the control over temperature, fan and pump speeds. Judging from the picture it should be possible to use either air- or water-cooling based on selected mode. It seems that the device installed on the case is just a radiator, while the pump is mounted inside 5.25 inch bay.
Gigabyte shows off Water Force, external water-cooling with three GTX 780 Tis | VideoCardz.com