SGI 3120

The first generation of workstations from SGI were based on MC680x0 Multibus CPU boards, third-party IO controllers, and SGI's Geometry Engine based graphics subsystem, which could be up to a half-dozen boards.

The model 3120 the RCS has (rebadged by CDC as a Cyber 910) has a 68020 CPU, and a graphics system with 12 Geometry Engine chips.

Manufacturer Silicon Graphics Inc.
Model 3120
Classification Workstation
Introduced 1989
Word Size 32 Bits
Implementation MC68020 Microprocessor
Registers 16
Logical Address 32 Bits
Physical Address ?
Memory Type MOS