[driax]

One thing to keep in mind, is that author mentions that the same card does not perform equivalently in Windows and Linux, specifically multi-screen support under Linux. From the forum post:

"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 :)

[ohaal]

Apparently triple monitors on linux with nvidia cards can be achieved without this hardware hack.

Source: http://www.reddit.com/r/techsupport/comments/13vkup/3_monito...

[stox]

I have a GTX680, and it supports three monitors out of the box using the proprietary Nvidia drivers on Linux. No hacks needed.

[gnarbarian]

I seriously do not understand how this issue is repeatedly brought up. I've been using multi-monitors on linux with nvidia-settings for more than 10 years without any issues.