My current Windows 7 machine uses a 27" HP 2709m monitor (1920x1080 resolution) and a 19" dell monitor (1280x1024 but turned sideways) connected to an Nvidia GTX 260. I've just been given another Dell 19", which I'd love to add to my setup, again turning it sideways. Unfortunately my graphics card only supports 2 monitors.
Can anyone suggest the cheapest (and hopefully most straightforward) way to upgrade my setup to support the third monitor? All my monitors are DVI capable, but no displayport.
One option is, I believe to put in a second GTX 260. That seems overkill because I don't do a lot of really graphics intensive things. I believe it won't work if I get a cheaper nvidia card that doesn't match the GTX 260.
I could get a Matrox TripleHead2Go, but it looks like I'd have problems coming up with a resolution setting?