"I own a NVidia GTX 690 which I bought for two reasons, gaming, and multi monitor setup for work, NVidia made it very clear that this card would drive up to 3 screens in 2d, which it does quite nicely :-+... under windows :--! The tight asses have decided that if you want this feature under Linux you have to get a Quadro which has Mosaic support :palm:. So naturally I decided to look at how mod the card, as the price difference is over $1000 between the GTX 690 and the Quadro K5000 (same GPU) and, get this... the K5000 is only single GPU and clocked some 25-30% slower then the gaming card, what a joke"
It might be that he had expected 3 screens under Linux but didn't get it, so he set out to "fix" it. It seems a bit excessive to expect someone to spend $1000 for a card performing 25-30% less just to get Linux support :)