Silicon Graphics Indigo2 CMNB007Y125 250MHz 256MB High Impact Unix Workstation

Silicon Graphics Indigo2 CMNB007Y125 250MHz 256MB High Impact Unix Workstation

The Silicon Graphics Indigo2 is a high-performance UNIX workstation from SGI's iconic mid-1990s deskside tower line. This unit is powered by a 250 MHz MIPS processor and equipped with 256 MB of RAM along with SGI's High Impact graphics subsystem — one of the higher-tier graphics options available for the Indigo2 platform. The machine powers on and boots to the INDIGO2 welcome screen. It is sold AS-IS for parts or repair: there is no hard drive or drive caddy installed, and the front door cover is missing.

Specifications & What's Included

• Manufacturer: Silicon Graphics (SGI)
• Model: Indigo2
• Part Number: CMNB007Y125
• Processor: 250 MHz MIPS CPU
• Memory: 256 MB RAM
• Graphics: High Impact graphics card (installed)
• Hard Drive: None — no hard drive or drive caddy present
• Front Door Cover: Missing
• Boot Status: Powers on; boots to the INDIGO2 welcome screen
• Power Input: 100–120V / 200–240V, 50/60 Hz (auto-switching, per rear label)
• Network: Ethernet RJ-45 port (rear I/O panel)
• Rear I/O: Four Mini-DIN ports (serial/keyboard/mouse), two DB-25 connectors, RJ-45 network
• Graphics Outputs: DB-9 and DB-13W3 video connectors (High Impact card)
• Audio: Multiple 3.5mm audio jacks (left side panel)
• Expansion: Two visible expansion slot positions (rear lower)
• Form Factor: Deskside tower with integrated floor stand
• Color: SGI signature purple chassis
• Country of Manufacture: USA (per rear label)
• Cosmetic Condition: Left side panel shows significant surface scratching; rear fan guard has rust and dust accumulation
• Sold AS-IS — no warranty on function; workstation only, no accessories, cables, or peripherals included

Applications

The Silicon Graphics Indigo2 was SGI's flagship deskside workstation of the mid-1990s, designed for demanding 3D graphics, scientific visualization, and engineering applications running the IRIX operating system (SGI's proprietary Unix). Indigo2 systems with High Impact graphics were used extensively in visual effects and film production (notably during the era when SGI workstations dominated Hollywood VFX pipelines), as well as in aerospace, automotive design, geophysical simulation, and academic research. The High Impact graphics option delivered hardware-accelerated OpenGL rendering at a level that made it among the most capable desktop graphics platforms of its generation. Today, Indigo2 systems are sought by SGI collectors, retro-computing enthusiasts, IRIX hobbyists, and anyone needing a period-correct workstation for legacy software or display. A unit that boots to the welcome screen — even without a hard drive — is a useful starting point for a restoration, as IRIX can be loaded over the network (BOOTP/TFTP) or from a SCSI drive added to the caddy bay.