Originally Posted by Thunderbird
What makes you believe a Quadro does what you want? There is a quadro with four outputs but it are just two GPUs on a single board. Further functionality wise for twinview/xinerama there isn't a real difference between a Geforce and a Quadro. Only QuadroPLEX is really different but that's bloody expensive.
On the nvidia website it specifies under quadro and SLI frame rendering exactly what i want:
SLI Multi View: Combines the power of two identical NVIDIA Quadro PCI Express graphics cards to drive multiple displays, with each GPU dedicated to a single display or to a pair of displays.