NetBSD/sun3 runs on these sun3 and sun3x architecture machines:
|Sun 3/50||15.7||4||3rd party||n/a||n/a||sun3|
|Sun 3/60||20||24||24 30-pin SIMM: 1x9 100ns||P4 (video)||1||sun3|
|Sun 3/75||16.67||16||VME bus memory cards||VME bus||2||sun3|
|Sun 3/80||20||40/64||16 30-pin SIMM: 1x9 or 4x9 100ns||P4 (video)||1||sun3x|
|Sun 3/100 series||16.67||16||VME bus memory cards||VME bus||3||sun3|
|Sun 3/200 series||25||64||VME bus memory cards||VME bus||12||sun3|
|Sun 3/400 series||33||128||VME bus memory cards||VME bus||12||sun3x|
|Sun 3/E||20||4(?)||VME bus memory cards||VME bus||n/a(?)||sun3|
The RAM column is maximum supported RAM in megabytes.
Sun made a variety of VME bus cabinets with different numbers of bus slots; ultimate RAM and I/O expansion is more a matter of how many bus slots there, rather than the particular CPU you have.
The Sun3/80 RAM capacity varies with the boot ROM revision - 3.0.2 allows 40MB, 3.0.3 allows 64MB.
The Sun 3/50 has 4MB soldered on the motherboard; all RAM expansions for that workstation were provided by third-party solutions (read "hacks") of one kind or another.
The Sun 3/E is a 6U VME single-board computer intended as an embedded system component.
The Sun 3/80 workstation and Sun 3/400 series servers are sun3x architecture machines based on the Motorola 68030 CPU. They were Sun's last design using Motorola microprocessors, and were somewhat complicated by the fact that the mc68030 has an integrated MMU in the CPU chip.
Sun Microsystems stopped designing systems with Motorola microprocessors when their own SPARC CPU design became a commercial success.