Setting up a multi-monitor computer can seem like a challenge, but once you've got the details down, it can be surprisingly easy. A powerful desktop with more than one graphics card usually does the job. While most people are content with one modest-sized screen, Flickr user Techie has got a total of 3 in his Mac setup.
-3× 30" monitors (Dell, HP, and Samsung)
-8-core Mac Pro (8 GB RAM, 2x Intel X25-V stripe SSD, nVidia 8800GT & GT 120, 4 TB storage)
-Herman Miller Aeron chair
-Logitech and Dell sound systems arranged as single output
The Mac Pro is definitely built for multi-monitor usage. Out of the box, it can come ready to support two monitors and more. Techie has got two nVidia graphics cards to handle the workload for tasks. If you're looking for an easy way to do this, Mac Pros are a good option. It simply involves buying the hardware and plugging it in. As for PCs, the overall price will be less, but they can be finicky to setup if you haven't done so before. Possible improvements would include a cable management system for all those pesky wires, and maybe some nice lighting solutions that could be placed behind this monitor array. The lights could be LED or simply table lamps.