HP 9000 Memory Modules
Overview
There are basically three types of memory PA-RISC workstations and servers use:
- Proprietary boards. Used by the early HP 9000/700s workstations and older servers. Boards are interchangable, i.e. these machines can use any of these boards.
- Old 72-pin ECC SIMMs. Used almost throughout the whole line of numbered 700s workstations and several servers. Should also be interchangeable, some incompatibilities could occur though.
- Newer 72-pin ECC SIMMs. Used by the newer, lettered workstations. Basically same as the above but with shorter cycle-times (60, 50ns). Interchangeable but some machines (with PA-8x00 CPU) need the faster 50ns modules.
- Some of the much newer machines use special kinds of DIMM modules, proprietary to these systems.
On a side note relating the 72-pin SIMMs: these are not compatible with other popular workstations as for example SGI, DEC Alpha or even PCs. These HP ECC SIMMs only work in HP 9000 PA-RISC systems (and some Laserjets printers) and, probably, not in any other computer. Alas, 72-pin (36-bit parity) SIMMs that may work in PCs or in one of the above mentioned workstations will not work in HP 9000 systems.
Proprietary boards
Used in:
Although all of these boards would fit electronically some are a bit too tall to fit in the desktop 700s, namely 720, 730 and 735.
Original HP part numbers:
- A2521A - 720 CPU and 96MB
- A2522A - 720 CPU and 128MB
- A2531A - 730 CPU and 96MB
- A2532A - 730 CPU and 128MB
- A2521A - 720 CPU and 96MB
- A2668A - 720 32MB upgrade
- A2562A - 720 64MB upgrade
- A2669A - 730 32MB upgrade
- A2567A - 730 64MB upgrade
- A2533A - 750 256MB upgrade
- A2534A - 750 384MB upgrade
- A1978A - (2) 4MB modules
- A1979A - (2) 8MB modules
- A2512A - (2) 16MB modules
- A2513A - (2) 32MB modules
- A2518A - (2) 64MB modules
Old 72-pin ECC SIMMs
Used in:
- 712/{60,80,100}
- 715/{33,50,75}
- 715/{64,80,100}
- 725/{50,75,100}
- 745i/{50,100}
- 747i/{50,100}
- E25, E35, E45, E55
Original HP part numbers:
- A2577A - (2) 4MB 72-pin SIMMs
- A2578A - (2) 8MB 72-pin SIMMs
- A2829A - (2) 16MB 72-pin SIMMs
- A2827A - (2) 32MB 72-pin SIMMs
- A2815A - (2) 4MB 72-pin SIMMs
- A2816A - (2) 8MB 72-pin SIMMs
- A2829A - (2) 16MB 72-pin SIMMs
- A2827A - (2) 32MB 72-pin SIMMs
- A2875A - (2) 64MB 72-pin SIMMs
- A2216A - (2) 4MB SIMMs
- A2217A - (2) 8MB SIMMs
- A2218A - (2) 16MB SIMMs
Newer 72-pin ECC SIMMs
Used in:
- A180, A180C
- B132L, B132L+, B160L, B180L+
- C100, C110, C132L, C160L, C160, C180, C200, C240
- J200, J210, J210XC, J280, J282
- D-Class
Original HP part numbers:
- A3026A - (2) 16MB 60ns ECC SIMMs
- A4207A - (2) 16MB 60ns ECC FPM SIMMs
- A4209A - (2) 32MB 60ns ECC FPM SIMMs
- A4515A - (2) 32MB 50ns ECC EDO SIMMs
- A3027A - (2) 64MB 60ns ECC SIMMs
- A4208A - (2) 64MB 60ns ECC FPM SIMMs
- A3408A - (2) 64MB 60ns ECC DIMMs
- A4516A - (2) 64MB 50ns ECC EDO SIMMs
- A4177A - (2) 128MB 50ns ECC EDO SIMMs
- A4517A - (2) 128MB 50ns ECC EDO SIMMs
- A3564A - (2) 128MB 60ns ECC EDO SIMMs
- A3717A - (2) 256MB 60ns ECC EDO SIMMs
743i ECC mezzanine cards
Used in:
The VME SBCs use special ECC mezzanine cards, up to four board can be used in on of these systems.
Original HP part numbers:
- A4263A - 8MB RAM card
- A4264A - 16MB RAM card
- A4265A - 32MB RAM card
- A4266A - 64MB RAM card
744 ECC mezzanine cards
Used in:
- 744/{132L,165L}
- 745/{132L,165L}
- 748/{132L,165L}
The VME SBCs use special ECC mezzanine cards, up to four board can be used in one of these systems. They use faster versions of the above mentioned 743i ECC mezzanine cards.
Original HP part numbers:
- A4501A - 16MB RAM card (only supported by HP-RT OS)
- A4502A - 32MB RAM card
- A4503A - 64MB RAM card
- A4449A - 128MB RAM card
- A6005A - 256MB RAM card