IBM PS/2 Model 77 Ultimedia
| Company type | Product line |
|---|---|
| Industry | Computer hardware |
| Founded | 1987 |
| Founder | IBM |
| Headquarters | Armonk , United States |
Area served | Worldwide |
| Products | Personal computers, servers, laptops, notebooks |
| Parent | IBM |
The Personal System/2 (PS/2) was a series of personal computers created by IBM. Launched in 1987, the PS/2 represented IBM's follow-up to the original IBM PC lineup, which was discontinued upon the PS/2 introduction. The majority of PS/2 units incorporated IBM's proprietary Micro Channel architecture (MCA) bus, an effort to reassert control over the PC marketplace. However, certain entry-level variants continued to utilize the broadly adopted ISA bus found in earlier IBM PCs. The PS/2 range encompassed various formats including desktops, towers, all-in-one units, portable computers, laptops, and notebooks.
Notes
- Legend
- Clarifications
- Submodels identified by IBM part numbers (P/N) intended for sales outside North America are not included.
- Unless otherwise specified, built-in or optional displays are CRT types.
- The Space Saving Keyboard is a compact 87-key version of the Model M keyboard without a numeric keypad.
- The Model 25 Collegiate was designed for university students, equipped with two 720 KB floppy drives, maximum RAM of 640 KB, and came bundled with the official PS/2 Mouse, Windows 2.0, and blank floppy disks.
- Financial workstation editions featured a specialized 50-key function keypad tailored for banking software.
- LS ("LAN Stations") models were diskless workstations lacking floppy or hard drives, connecting through Ethernet or Token Ring network adapters.
- Ultimedia models included microphones and were equipped with SCSI CD-ROM drives, M-Audio sound cards, volume controls, and front-panel headphone/microphone jacks.
- Array models functioned as PS/2 Servers supporting RAID configurations.
Primary series
| Model | IBM P/N | CPU | Clock speed (MHz) |
Bus type | Expansion slots | Drive bays | FDD | HDD | Base RAM | Max RAM | Video adapter | Display | Form factor | Release date | Notes |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 25 | 8525-001 | Intel 8086 | 8 (0 w) | ISA, 8-bit | 2 | 2 | one 720 KB | none | 512 KB | 640 KB | MCGA | 12-inch monochrome | All-in-one | August 1987 | Space Saving Keyboard |
| 25 | 8525-004 | Intel 8086 | 8 (0 w) | ISA, 8-bit | 2 | 2 | one 720 KB | none | 512 KB | 640 KB | MCGA | 12-inch color | All-in-one | August 1987 | Space Saving Keyboard |
| Model | IBM P/N | Processor | Clock speed (MHz) | Bus type | Slots | Drive bays | FDD | HDD | Stock RAM | Maximum RAM | Video adapter | Monitor | Form factor | Date introduced | Notes |
|---|
| Model | IBM P/N | Processor | Clock speed (MHz) | Bus type | Slots | Drive bays | FDD | HDD | Stock RAM | Maximum RAM | Video adapter | Monitor | Form factor | Date introduced | Notes |
|---|
| Model | IBM P/N | Processor | Clock speed (MHz) | Bus type | Slots | Drive bays | FDD | HDD | Stock RAM | Maximum RAM | Video adapter | Monitor | Form factor | Date introduced | Notes |
|---|
| Model | IBM P/N | Processor | Clock speed (MHz) | Bus type | Slots | Drive bays | FDD | HDD | Stock RAM | Maximum RAM | Video adapter | Monitor | Form factor | Date introduced | Notes |
|---|
| Model | IBM P/N | Processor | Clock speed (MHz) | Bus type | Slots | Drive bays | FDD | HDD | Stock RAM | Maximum RAM | Video adapter | Monitor | Form factor | Date introduced | Notes |
|---|
| Model | IBM P/N | Processor | Clock speed (MHz) | Bus type | Slots | Drive bays | FDD | HDD | Stock RAM | Maximum RAM | Video adapter | Monitor | Form factor | Date introduced |
Notes |
|---|
| Model | IBM P/N | Processor | Clock speed (MHz) | Bus type | Slots | Drive bays | FDD | HDD | Stock RAM | Maximum RAM | Video adapter | Monitor | Form factor | Date introduced | Notes |
|---|
| Model | IBM P/N | Processor | Clock speed (MHz) | Bus type | Slots | Drive bays | FDD | HDD | Stock RAM | Maximum RAM | Video adapter | Monitor | Form factor | Date introduced | Notes |
|---|
| Model | IBM P/N | Processor | Clock speed (MHz) | Bus type | Slots | Drive bays | FDD | HDD | Stock RAM | Maximum RAM | Video adapter | Monitor | Form factor | Date introduced | Notes |
|---|
| Model | IBM P/N | Processor | Clock speed (MHz) | Bus type | Slots | Drive bays | FDD | HDD | Stock RAM | Maximum RAM | Video adapter | Monitor | Form factor | Date introduced | Notes |
|---|
| Model | IBM P/N | Processor | Clock speed (MHz) | Bus type | Slots | Drive bays | FDD | HDD | Stock RAM | Maximum RAM | Video adapter | Monitor | Form factor | Date introduced | Notes |
|---|
| Model | IBM P/N | Processor | Clock speed (MHz) | Bus type | Slots | Drive bays | FDD | HDD | Stock RAM | Maximum RAM | Video adapter | Monitor | Form factor | Date introduced |
Notes |
|---|
|- | IBM PS/2 Model 25 LS | 8525-L01 | Intel 8086 | 8 (0 w) | ISA, 8-bit | 2 | 2 | one 720 KB | none | 512 KB | 640 KB | MCGA | 12-inch monochrome | All-in-one | August 1987 | Token Ring network connectivity | | IBM PS/2 Model 30 | 8530-001 | Intel 8086 | 8 (0 w) | ISA, 8-bit | 3 | 2 | one 720 KB | none | 640 KB |640 KB | MCGA | optional display | Desktop | April 1989 | | IBM PS/2 Model 30 |8530-002 |Intel 8086 |8 (0 w) |ISA,8-bit |3 |2 |two 720 KB floppy drives |none |640 KB RAM base |max 640 KB RAM capacity |MCGA video adapter |required display optional form desktop release April '87| | Variants R02 and R21 of the IBM PS/2 Model 30 were available as financial workstations with similar specifications. | The late '80s saw the introduction of the IBM PS/2 Model 30-286 series featuring Intel 80286 processors clocked at approximately 10 MHz paired with VGA graphics. | Early '90s desktop markets were targeted by models such as the IBM PS/2 Model 35 SX, LS, and SLC equipped with Intel 386SX and 386SLC CPUs running up to 20 MHz on an ISA bus with VGA graphics. | Enhanced slot and drive options accompanied the IBM PS/2 Model 40 SX, LS, and SLC models utilizing similar processors. | Mid-range desktop solutions from the late '80s were addressed by the IBM PS/2 Model 50 series including "Z" variants featuring MCA bus architecture with Intel 80286 CPUs at roughly10 MHz and VGA graphics. | Business desktop requirements were met by the IBM PS/2 Model 55 SX and LS models which upgraded to Intel 386SX processors on MCA bus platforms offering expanded memory and storage options. | Introduced in the early '90s, Ultimedia M57 SLC models combined Intel 386SLC CPUs with MCA bus design and multimedia functionalities. | Enterprise users were targeted by higher-end systems like the tower-form-factor IBM PS/2 Model 60, integrating Intel 80286 processors with MCA bus supporting up to eight expansion slots alongside advanced storage capabilities from the late '80s. | The IBM PS/2 Model 70 series extended performance options by incorporating Intel 386 and later 486 processors running at speeds up to25 MHz on MCA buses for business computing through the early '90s. | For demanding enterprise environments from late '80s into early '90s, the flagship tower system IBM PS/2 Model80 featured Intel 386 CPUs at up to25 MHz with MCA bus support for numerous expansion slots and large storage capacity. | Mid-1990s high-performance models such as "53", "56", "57", "76", and "77" series incorporated Intel 486SLC, 486DX2, and DX4 processors operating between33 to100 MHz. These utilized MCA architecture with multiple expansion slots, advanced video adapters like XGA-2 and SVGA, plus extensive SCSI or IDE storage options. They catered to professional desktops requiring multimedia features and network connectivity via Ethernet or Token Ring. | The "90 XP" and "95 XP" tower desktops offered powerful configurations with Intel 486SX and DX2 processors up to50 MHz featuring MCA buses, support for up to64 MB memory, advanced XGA graphics adapters, and high-capacity SCSI drives. These systems were optimized for business applications demanding substantial processing power during the early '90s. | The compact IBM PS/2 E model was equipped with an Intel 486SLC2 processor running at50 MHz paired with ISA bus slots for PC Cards. It supported XGA-2 video output along with optional CRT or LCD monitors. Released in the mid-'90s, it fulfilled small form-factor desktop requirements. |}
PS/2 Server
| Model | IBM P/N | CPU | Operating frequency (MHz) |
Bus type | Number of slots |
Number of drive bays |
FDD | HDD | Default RAM |
Maximum RAM |
Graphics adapter | Display | Chassis type | Launch date | Remarks | Ref(s). |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Server 85 | 9585-0X6 | Intel 486SX | 33 | MCA, 32-bit | 8 | 7 | single 2.88 MB | 104 MB (SCSI) | 8 MB | 64 MB | SVGA | optional | Tower | Template:Date table sorting | ||
| Server 85 | 9585-0XT | Intel 486SX | 33 | MCA, 32-bit | 8 | 7 | single 2.88 MB | Up to 1 GB (SCSI) | 8 MB | 64 MB | SVGA | optional | Tower | Template:Date table sorting | ||
| Server 85 | 9585-0KG | Intel 486 | 33 | MCA, 32-bit | 8 | 7 | single 2.88 MB | Up to 540 MB (SCSI) | 8 MB | 256 MB | SVGA | optional | Tower | Template:Date table sorting | ||
| Server 85 | 9585-0NT | Intel 486DX2 | 66 | MCA, 32-bit | 8 | 7 | single 2.88 MB | Up to 1 GB (SCSI) | 8 MB | 256 MB | Super VGA | optional | Tower | Template:Date table sorting | ||
| 8595-0K6 | i486 Intel 486 | 33 | style="background:#CCF"|Micro Channel architecture, MCA,32-bit | 8 slots | 8 bays | single1.44MB FDD | Up to160MB SCSI HDD | 8MB RAM default | 256MB max RAM | Super VGA graphics adapter | optional display | Tower enclosure | unknown release date | |||
| 9595-3NT | Intel DX2 Intel486DX2 | 66 MHz | MCA,32-bit bus | 8 slots | 9 bays | single1.44MB FDD | 3×1GB SCSI HDD | 8MB RAM default | 256MB maximum RAM | Super VGA graphics adapter | optional display | Tower enclosure | Template:Date table sorting | |||
| 9595-Z0x | Intel DX2/Pentium | 66 MHz | MCA,32-bit bus | 8 slots | 7 bays | single2.88MB FDD | 1GB SCSI HDD | 8MB RAM default | 256MB maximum RAM | Super VGA graphics adapter | optional display | Tower enclosure | Template:Date table sorting | Comes pre-installed with IBM LAN Server or NetWare | ||
| 8600-001 | i486 Intel486 | 33 MHz | MCA,32-bit, dual processor capability | 12 slots | 10 bays | single1.44MB FDD | (400 MB/1 GB) SCSI HDD | 32MB RAM default | 128MB maximum RAM | Super VGA graphics adapter | optional display | Tower enclosure | Template:Date table sorting | Supports up to28GB hot-swappable storage, RAID-5 capable, dual CPU option available | ||
| 8600-003 | 2×i486 Intel486 | 50 MHz | MCA,32-bit, dual processor included | 12 slots | 10 bays | single1.44MB FDD | (400 MB/1 GB) SCSI HDD | 32MB RAM default | 128MB maximum RAM | Super VGA graphics adapter | optional display | Tower enclosure | Template:Date table sorting | Supports up to28GB storage, RAID-5 compatible |
Portables
| Model | IBM P/N | CPU | Clock speed (MHz) |
Bus type | Number of slots |
Number of drive bays |
FDD | HDD | Base RAM |
Maximum RAM |
Graphics adapter | Display type | Form factor | Launch date | Remarks | Ref(s). |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| P70 | 8573-031 | Intel 386 | 16 | MCA, 32-bit | 2 (one 16-bit, one 32-bit) | 0 | one 1.44 MB | 30 MB (ESDI) | 2 MB | 8 MB | VGA | Monochrome gas plasma display | Portable | Template:Date table sorting | Features slot for optional i387 math co-processor | |
| P70 | 8573-061 | Intel 386 | 20 | MCA, 32-bit | 2 (one 16-bit, one 32-bit) | 0 | one 1.44 MB | 60 MB (ESDI) | 2 MB | 8 MB | VGA | Monochrome gas plasma display | Portable | Template:Date table sorting | Includes slot for optional i387 math co-processor | |
| P70 | 8573-121 | Intel 386 | 20 | MCA, 32-bit | 2 (one 16-bit, one 32-bit) | 0 | one 1.44 MB | 120 MB (ESDI) | 2 MB | 8 MB | VGA | Monochrome gas plasma display | Portable | Template:Date table sorting | Equipped with slot for optional i387 math co-processor | |
| P75 | 8573-161 | Intel 486 | 33 | MCA,32-bit | 4 (two 16-bit, two 32-bit) | 0 | one1.44MB | 160MB (SCSI) | 4MB | 16MB | VGA | Monochrome gas plasma | Portable | Template:Date table sorting | ||
| P75 | 8573-401 | Intel 486 | 33 | MCA,32-bit | 4 (two16-bit, two32-bit) | 0 | one1.44MB | 400MB (SCSI) | 4MB | 16MB | VGA | Monochrome gas plasma | Portable | Template:Date table sorting | ||
| IBM PS/2 Model L40 SX | 8543-A44 | Intel386SX | 20 | Industry Standard Architecture (ISA),16-bit | 0 (one with AT-bus expansion port) | 0 | one1.44MB | 60MB (IDE) | 2MB | 18MB | Video Graphics Array (VGA) | Monochrome LCD | Laptop | Template:Date table sorting | ||
| IBM PS/2 N51SX | 8551-033 | i386SX | 16 | style="background:#FFC" Proprietary bus | 2 (PC Card slots) |
one1.44MB |
40MB (IDE) |
2MB |
10MB |
Monochrome LCD |
Notebook |
|||||
| IBM PS/2 N51SLC | 8551-025 | IBM386SLC | 16 | style="background:#FFC" Proprietary bus |
2 (PC Card slots) |
one1.44MB |
80MB (IDE) |
2MB |
10MB |
Monochrome LCD |
Notebook |
|||||
| IBM PS/2 N33SX | 8533-A33 | i386SX | 16 | style="background:#FFC" Proprietary bus |
2 (PC Card slots) |
one1.44MB |
40MB (IDE) |
Monochrome LCD |
Notebook |
|||||||
| IBM PS/2 N33SX | 8533-A35 | i386SX | 16 | style="background:#FFC" Proprietary bus |
2 (PC Card slots) |
one1.44MB |
80MB (IDE) |
Monochrome LCD |
Notebook |
|||||||
| IBM PS/2 Model CL57 SX | 8554-045 | IBM386SLC | 16 | style="background:#FFC" Proprietary bus |
2 (PC Card slots) |
one1.44MB |
80MB (IDE) |
2MB |
16MB |
Color TFT display |
Laptop |
Related systems
... (other Academic System variants omitted for brevity) ... ... (similar EduQuest Forty, Fifty, Thirty-cs, Fifty-cs, Thirty-five, Forty-five, Fifty-five entries omitted for brevity) ... ... (Industrial Computer series entries summarized below) ...| Model | IBM | CPU | Clock rate |
Bus type | Number of slots |
Number of drive bays |
Default |
Maximum |
Graphics adapter | Display | Chassis type | Launch date | Remarks | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Academic System | 6152-022 | Intel 80286 ROMP 032 |
10 | MCA, 16-bit | 8 | 4 | single 1.44 MB | 20 MB | 2 MB | 8 MB | VGA | optional | Tower | Includes ROMP processor on daughterboard; cannot operate concurrently with 286 CPU | |
| Academic System | 6152-024 | Intel 80286 ROMP 032 |
10 | MCA, 16-bit | 8 | 4 | single 1.44 MB | 20 MB | 4 MB | 8 MB | VGA | optional | Tower | Features ROMP processor on daughter card; simultaneous use with 286 not supported | |
| Academic System | 6152-044 | Intel 80286 ROMP 032 |
10 | MCA, 16-bit | 8 | 4 | single 1.44 MB | 44 MB | 4 MB | 8 MB | VGA | optional | Tower | ROMP processor included on daughterboard; cannot function in parallel with the 286 CPU | |
| Academic System | 6152-048 | Intel 80286 ROMP 032 |
10 | MCA, 16-bit | 8 | 4 | single 1.44 MB | 44 MB | 8 MB | 8 MB | VGA | optional | Tower | Equipped with ROMP processor on daughter card; concurrent operation with the Intel 286 not possible | |
| IBM Clinical Workstation | 7690 | Intel 8086 | 8 (zero wait states) | Industry Standard Architecture (ISA), 8-bit | 4 | 0 | single 1.44 MB floppy drive | none | 640 KB RAM | 8 MB RAM max | Multi-Color Graphics Array (MCGA) | Monochrome LCD screen | Mobile workstation form factor | Designed specifically as a portable healthcare workstation; pairs with IBM Executive Workstation (7496) | |
| EduQuest Thirty | 9603 | IBM386SLC | 25 | ISA,16-bit | 4 | 2 | single1.44MB floppy drive | 30MB IDE hard disk | 1–4MB RAM | 20MB RAM max | Super VGA (SVGA) graphics | 14-inch color monitor | All-in-one design | Model25 adapted for educational use, includes optional sound card; later units lack IBM logo badge | |
| IBM Executive Workstation | 7496 | Intel8086 | 8 MHz (zero wait states) | ISA,8-bit bus | 3 expansion slots | 0 drive bays | single720KB floppy disk drive | none hard disk storage | 640KB RAM stock | 640KB RAM maximum | Multi-Color Graphics Array (MCGA) video adapter | Monochrome display | All-in-one configuration | Purpose-built healthcare all-in-one system; designed to work alongside IBM Clinical Workstation (7690) | |
| GE Fanuc Workmaster II | 7186 | Intel386 CPU | 16 MHz clock speed | MCA,32-bit bus interface | >0 expansion slots | >0 drive bays | > single1.44MB floppy drive | >30MB ESDI hard disk | >2MB RAM stock | >8MB RAM maximum | >Video Graphics Array (VGA) graphics adapter | >Monochrome gas plasma display | >Portable design | >Industrial-grade PS/2 P70 variant ruggedized by General Electric Fanuc |