This has to be aimed at compute. Nvidia may put the geforce moniker on it, and certainly a few fools will buy one or more for gaming, but I'd think most would be businesses needing compute and not able to afford the higher priced pro cards.
The original Titan did well because it was a bait and switch. It was the first availability of GK110 as geforce and plenty of people had been waiting on it. There was no inkling of 780 at the time, so those who could afford them got them. Totally different situation now. There is 780ti available, and soon to come 6GB versions, making Titan Black and this card completely pointless for gaming. Literally pointless, you'd just be spending more for what would be less performance as these cards are all reference whereas you can get a 780ti Classified.
Might as well call this Titan-F, if you get my drift, as far as gaming goes for the people who buy one for that reason.