If high resolution edge blending is required, multiple display output card is required. GeoBox can accept up to 4k/2k @60Hz or 7680*2160 @30Hz input resolution. User can set the output of the display card up to the above resolution for each GeoBox, then GeoBox will split the image for each projector based on native resolution of the projector. Usually, one high resolution input can be split for 2-4 projectors through GeoBox. It will simplify the system. 4x high resolution outputs from one PC can be easily shared to 8-16 projectors and still keep very good video quality. The display card needs to have the function to set overlap pixels between adjacent outputs. If no overlap function in the display card, user needs to create the content with some overlap pixels based on the system setup.