This is a Silicon Graphics Octane - CMNB015ANG300 300 Mhz R12000 Processor 14x128mb Ram
Some cosmetic wear, see photos
This unit is power tested and working as seen in pictures posted.
This is a VERY COOL VINTAGE computer!
Thank you.

Processor: 300 MHz MIPS R12000 processor with integrated dedicated cache.

System Board (IP30): Rather than using a traditional shared system bus, the Octane uses a high-bandwidth "Crossbar Switch" architecture. This allows modules like the CPU, memory, and graphics cards to talk to each other simultaneously without fighting for bandwidth.

Graphics: Typically shipped with ESI (Enhanced Solid Impact) or similar XIO-based graphics architecture designed for heavy 3D rendering, CAD, and digital media production.

Audio: Features the low-latency proprietary RAD audio processor, including digital ADAT/SPDIF optical and coaxial hardware I/O natively.

Memory & Storage: Uses proprietary 200-pin DIMM system memory (often configured with 512MB RAM from the factory). It contains 3 internal 3.5" Ultra-Wide SCSI drive slots but lacks internal 5.25" bays for CD-ROM drives.

Chassis Design: A heavy, 54 lb (24 kg) workstation immediately recognizable by its distinct, sculpted light-green skin and iconic front-facing SGI cube logo