A stripped down Mach kernel was used as the operating system for the card. Due to the supporting processor, 32-bit color on the NeXTdimension was faster than 2-bit greyscale Display PostScript on the NeXTcube. Display PostScript never actually ran on the board so the Intel i860 never did much more than move blocks of color data around.
A minimalistic Mach kernel served as the operating system for the card. The presence of a supporting processor enabled faster 32-bit color rendering on the NeXTdimension compared to 2-bit greyscale Display PostScript on the NeXTcube. Notably, Display PostScript never executed on the board, thus limiting the Intel i860's capabilities to merely relocating blocks of color data.