The datapath x4 - offers 4 DVI programmable outputs and a programmable DVI input

An uber triple head - a quad head- works in same way as triple heads - tells the computer its connected to a single large monitor

1 input - 4 output dvi splitter says it works up to 3800x2000 ( approx ) - with 4 1080 outputs

http://www.datapath.co.uk/x4.html

needs a pc to program the driver config-
i think its new - i havent tested it

The Datapath x4 is a stand alone display wall controller that accepts a single or dual-link DVI input and can flexibly display this across four output monitors.

Each output can be driven as DVI or analog RGB and can represent an arbitrary crop region of the original input image. The output resolution and frame rate does not need to be related to that of the input as the Datapath x4 will optionally upscale and frame rate convert each cropped region independently. Additionally, each output can be independently mirrored or rotated through 90°, 180° or 270° to support creative mixes of landscape and portrait monitors.