Elan Graphics gives the workstation real-time 2D and 3D graphics rendering capability similar to that of even high-end PCs made over ten years after Elan's introduction, with the exception of texture mapping, which had to be performed in software.
[1] The Silicon Graphics Indigo Elan option Graphics systems consist of four GE7 Geometry Engines capable of a combined 128 MFLOPS and one RE3 Raster Engine.
Similarly, when Z-buffering is not required, a double-buffered 24-bit RGB framebuffer configuration is possible.
Elan Graphics can produce resolutions up to 1280 x 1024 pixels with 24-bit color and can also process unencoded NTSC and PAL analog television signals.
The Elan Graphics system is made up of five daughterboards that plug into the main workstation motherboard.