1 system, 3 video cards, 3 24" monitors. I'm going for exactly what you're talking about, 160 degree-ish FOV. I'm questionning how well it will perform since I won't be able to buy the crazy-uber high end cards for each slot, Apple currently limits multi-card setups like that to the slightly lower end cards I'm sure due to both the physical size of the cards and power draw. With a new 8-core MacPro, 12GB of RAM and 3 x NVIDIA GT-120 512MB cards, I'm hoping to be able to maintain > 100fps with volumetric clouds, tree hugger trees, insane objects...etc, for most areas that I fly in which is is the west coast of Canada and central Canada. -> Brock