
Sun-3 is a series of UNIX computer workstations and servers produced by Sun Microsystems, launched on September 9, 1985.[1] The Sun-3 series are VMEbus-based systems similar to some of the earlier Sun-2 series, but using the Motorola 68020 microprocessor, in combination with the Motorola 68881 floating-point co-processor (optional on the Sun 3/50) and a proprietary Sun MMU. Sun-3 systems were supported in SunOS versions 3.0 to 4.1.1_U1 and also have current support in NetBSD and Linux.[2]
Sun-3 models
Models are listed in approximately chronological order.
- Model - Codename - CPU board - CPU MHz - Max. RAM - Chassis - 3/75 - Carrera - Sun 3004 - 16.67 MHz - 8 MB - 2-slot VME (desktop) - 3/140 - Carrera - Sun 3004 - 16.67 MHz - 16 MB - 3-slot VME (desktop/side) - 3/160 - Carrera - Sun 3004 - 16.67 MHz - 16 MB - 12-slot VME (deskside) - 3/180 - Carrera - Sun 3004 - 16.67 MHz - 16 MB - 12-slot VME (rackmount) - 3/150 - Carrera - Sun 3004 - 16.67 MHz - 16 MB - 6-slot VME (deskside) - 3/50 - Model 25 - — - 15.7 MHz - 4 MB - "wide Pizza-box" desktop - 3/110 - Prism - — - 16.67 MHz - 12 MB - 3-slot VME (desktop/side) - 3/260 - Sirius - Sun 3200 - 25 MHz (CPU), 20 MHz (FPU) - 32 MB - 12-slot VME (deskside) - 3/280 - Sirius - Sun 3200 - 25 MHz (CPU), 20 MHz (FPU) - 32 MB - 12-slot VME (rackmount) - 3/60 - Ferrari - — - 20 MHz - 24 MB - "wide Pizza-box" desktop - 3/E - Polaris - Sun 3/E - 20 MHz - 16 MB - none (6U VME board) 
(Max. RAM sizes may be greater when third-party memory boards are used.)
 Original Sun-3 CPU board Original Sun-3 CPU board
 Original Sun-3 4 MB memory board with Sun-3 SCSI daughter board Original Sun-3 4 MB memory board with Sun-3 SCSI daughter board
 Sun 3/50 CPU board with Helios 4 MB memory expansion Sun 3/50 CPU board with Helios 4 MB memory expansion
Keyboard
The Sun Type 3 keyboard is split into three blocks:
- special keys
- main block
- numeric pad
It shipped with Sun-3 systems.[3]
Sun-3x

In 1989, coincident with the launch of the SPARCstation 1, Sun launched three new Sun-3 models, the 3/80, 3/470 and 3/480. Unlike previous Sun-3s, these use a Motorola 68030 processor, 68882 floating-point unit, and the 68030's integral MMU. This 68030-based architecture is called Sun-3x.
- Model - Codename - CPU board - CPU MHz - Max. RAM - Chassis - 3/80 - Hydra - - - 20 MHz - 16, 40 or 64 MB - "Pizza-box" desktop - 3/460 - Pegasus - Sun 3400 - 33 MHz - 128 MB - 12-slot VME (deskside, older design) - 3/470 - Pegasus - Sun 3400 - 33 MHz - 128 MB - 12-slot VME (deskside, newer design ) - 3/480 - Pegasus - Sun 3400 - 33 MHz - 128 MB - 12-slot VME (rackmount) 
Sun 3/260s upgraded with Sun 3400 CPU boards are known as Sun 3/460s.
Sun timeline

See also
References
- ↑ "New Sun Workstations Lead Industry In System Performance", Press Release, Jackie Rae and Lorrie Duval, Sun Microsystems
- ↑ "Linux/sun3". Archived from the original on 2016-09-10. Retrieved 2011-09-13. This article contains some pointers and references to getting Linux running properly on the Sun 3/xx line of workstations/servers.
- ↑ "Sun Type 3". Deskthority.