Year IBM model number Name Processor Bus HD interface Case Notes
1987 8525-104 Model 25 8 MHz Intel 8086 ISA 8 bit Desktop with integrated color display Single disk drive
1987 8525-001 Model 25 8 MHz Intel 8086 ISA 8 bit Desktop with integrated monochrome display Single disk drive
1987 8525-004 Model 25 8 MHz Intel 8086 ISA 8 bit Desktop with integrated color display Single disk drive
1987 8525-G01 Model 25 8 MHz Intel 8086 ISA 8 bit Desktop with integrated monochrome display Single disk drive, enhanced keyboard
1987 8525-G04 Model 25 8 MHz Intel 8086 ISA 8 bit Desktop with integrated color display Single disk drive, enhanced keyboard
1987 8525-C02 Model 25 Collegiate 8 MHz Intel 8086 ISA 8 bit Desktop with integrated monochrome display Two disk drives
1987 8525-C05 Model 25 Collegiate 8 MHz Intel 8086 ISA 8 bit Desktop with integrated color display Two disk drives
1987 8525-K02 Model 25 Collegiate 8 MHz Intel 8086 ISA 8 bit Desktop with integrated monochrome display Two disk drives, enhanced keyboard
1987 8525-K05 Model 25 Collegiate 8 MHz Intel 8086 ISA 8 bit Desktop with integrated color display Two disk drives, enhanced keyboard
1987 8530-002 Model 30 8 MHz Intel 8086 ISA 8 bit Desktop Two disk drives
1987 8530-021 Model 30 8 MHz Intel 8086 ISA 8 bit WDI-325Q, 20 MB, ESDI Desktop Single disk drives
1987 8530-R02 Model 30 8 MHz Intel 8086 ISA 8 bit Desktop, intelligent financial workstation Two disk drives, 4700 host support
1987 8530-R21 Model 30 8 MHz Intel 8086 ISA 8 bit ST-506, 20 MB Desktop, intelligent financial workstation Single disk drives, 4700 host support
1987 8550-021 50 Intel 80286 MCA 16 bit ST-506, 20 MB with controller MCA adapter in slot 4 Desktop
1987 8560 60 Intel 80286 MCA 16 bit MFM or ESDI Tower
1987 8580 80 Intel 80386 DX MCA 32 bit MFM or ESDI Tower
1988 8525-L01 Model 25 8 MHz Intel 8086 ISA 8 bit Desktop with integrated monochrome display Single disk drive, token-ring network adapter
1988 8525-L04 Model 25 8 MHz Intel 8086 ISA 8 bit Desktop with integrated color display Single disk drive, token-ring network adapter
1988 8530-E01 Model 30 286 10 MHz Intel 286 ISA 16 bit Desktop Single HD disk drive
1988 8530-E21 Model 30 286 10 MHz Intel 286 ISA 16 bit ESDI, 20 MB Desktop Single HD disk drive
1988 8530-E0R Model 30 286 10 MHz Intel 286 ISA 16 bit Desktop, intelligent financial workstation Single HD disk drive, 4700 host support
1988 8530-E2R Model 30 286 10 MHz Intel 286 ISA 16 bit ESDI, 20 MB Desktop, intelligent financial workstation Single HD disk drive, 4700 host support
1988 8550-031, 8550-061 50 Z Intel 80286 MCA 16 bit ESDI directly attacted to MCA bus via interposer card in slot 4 Desktop
1988 8570 70 Intel 80386 DX MCA 32 bit Desktop
1989 8530-001 Model 30 8 MHz Intel 8086 ISA 8 bit Desktop Single disk drive
1989 8530-E31 Model 30 286 10 MHz Intel 286 ISA 16 bit ESDI, 30 MB Desktop Single HD disk drive
1989 8555 55 SX Intel 80386 SX MCA 16 bit ESDI Desktop
1989 8570 70 Intel 80386 DX, Intel 80486 MCA 32 bit Desktop
1989 8573-031 P70 386 Intel 80386 DX MCA 32 bit Portable 2 MCA slots, one full length, one half length.
1990 8525-006 Model 25 286 10 MHz Intel 286 ISA 16 bit Desktop with integrated color display Single HD disk drive
1990 8525-036 Model 25 286 10 MHz Intel 286 ISA 16 bit ST-506, 30 MB drive Desktop with integrated color display Single HD disk drive
1990 8525-G06 Model 25 286 10 MHz Intel 286 ISA 16 bit Desktop with integrated color display Single HD disk drive, enhanced keyboard
1990 8525-G36 Model 25 286 10 MHz Intel 286 ISA 16 bit ST-506, 30 MB drive Desktop with integrated color display Single HD disk drive, enhanced keyboard
1990 8573 P75 486 Intel 80486 MCA 32 bit SCSI Portable 4 MCA slots, two full length, two half length.
1990 8580 80 Intel 80386 DX MCA 32 bit SCSI Tower
1990 8556 56 SX Intel 80386 SX MCA 16 bit Desktop
1990 8565 65 SX Intel 80386 SX MCA 16 bit SCSI Tower
1990 8590 90 XP 486 Intel 80486 MCA 32 bit SCSI Desktop
1990 8595 95 XP 486 Intel 80486 MCA 32 bit SCSI Tower
1991 8530-E41 Model 30 286 10 MHz Intel 286 ISA 16 bit ESDI, 45 MB Desktop Single HD disk drive
1991 8540 40 SX Intel 80386 SX ISA 16 bit Desktop
1991 8557 57 SX Intel 80386 SX MCA 16 bit SCSI Desktop
1991 8570 70 Intel 80386 DX, Intel 80486 MCA 32 bit Desktop
1992 8525-K00 Model 25 SX 16 MHz Intel 386 SX ISA 16 bit Desktop with integrated color display Single HD disk drive
1992 8525-K01 Model 25 SX 16 MHz Intel 386 SX ISA 16 bit Desktop with integrated color display Single HD disk drive, Ethernet network adapter
1992 8525-L02 Model 25 SX 16 MHz Intel 386 SX ISA 16 bit Desktop with integrated color display Single HD disk drive, token-ring network adapter