In a bid to run Crysis at Very High settings in DirectX 10 at 1920x1200, NVIDIA is launching its new Quadro Plex D series. These are external boxes which house up to four workstation-class video cards to drive a total of up to eight displays. They interface with the workstation or rack-mount system through a simple PCI Express card.
The first model, the Quadro Plex 2200 D2 VCS (for Visual Computing System) houses two Quadro FX 5800 GPUs (workstation-class versions of the GeForce GTX 280), four dual-link DVI channels, and a staggering 8GB of frame buffer memory. Its "little" brother, the Quadro Plex 2100 D4 VCS, contains four Quadro FX 4700 GPUs and 4GB of frame buffer memory. This unit is based on the Quadro FX 4700 X2, which is the workstation cousin of the GeForce 9800 GX2.
In addition to CAD, modeling, and ray tracing, these units are CUDA-capable, so if you're looking to spend five figures to boost your Folding@Home stats, a few of these may be the way to go.