Ok you caught us. Technically this card does take up only one slot but you will need to have room for the cooling which, as you would imagine is liquid. As far as we know Galaxy's HOF (Hall of Fame) cards are the only GPUs to have a white PCB making this card unique.
The Galaxy GeForce GTX 780 Ti HOF V20 uses the GK110-425-B1 chip that is fully unlocked giving you 2880 CUDA cores and 3GB DDR5. This card is just begging to be overclocked. It has 16 phases for the core, 2 phases for the memory and 3 phases for the PLL with power being delivered by two 8pin and one 6pin connector. The memory and power delivery components will have their own heatsinks.
This does look like a very interesting card and we'll be sure to give you any updates as they occur.
Source: www.xfastest.com via www.thinkcomputers.org