I currently own a 27" iMac and 2 24" monitors. This configuration usually runs in a triple monitor config with the 2 monitors plugged into the iMac's 2 thunderbolt ports.
I have another desktop which runs Ubuntu and I want to hook it up to use all 3 monitors. The current graphics card on it is 9800GT which has 2 DVI ports and no display port so I'm able to connect the 2 smaller monitors but not the iMac. As I understand it, the iMac screen can only be used as an external monitor through a DisplayPort output.
My question is if I buy a new graphics card with 2 DVI ports and 1 display port, will it allow me to run the Ubuntu desktop with all 3 screens? If so, can anyone advise me where I can buy such a graphics card? I'm sure there are good places to buy such things cheaply. Right now I'm going through each card since I don't know a site that searches specs. To confirm, the purpose of the card is purely for the triple screen config, not for gaming, etc. so hopefully I don't need to buy a really recent card.
Note: I'm in the UK