List of IBM Personal Computer models

The IBM Personal Computer, commonly known as the IBM PC, spanned multiple models in its first generation (including the PCjr, the Portable PC, the XT, the AT, the Convertible, and the /370 systems, among others), from 1981 to 1987. It eventually gave way to many splintering product lines after IBM introduced the Personal System/2 in April 1987.

Notes Legend

Models

Original line

+ IBM Personal Computer AT models Type Date announced Date withdrawn Bus of slots of bays Processor Notes Ref(s). Personal Computer ISA, 8-bit 5 2 Intel 8088 4.77 16 KB 64 KB Diskless model; only means of data storage is through IBM Cassette BASIC Personal Computer ISA, 8-bit 5 2 Intel 8088 4.77 48 KB 64 KB 160 KB Single-sided, double-density floppy disk drive Personal Computer ISA, 8-bit 5 2 Intel 8088 4.77 Personal Computer ISA, 8-bit 5 2 Intel 8088 4.77 64 KB 64 KB 160 KB Personal Computer ISA, 8-bit 5 2 Intel 8088 4.77 64 KB 64 KB 320 KB Personal Computer ISA, 8-bit 5 2 Intel 8088 4.77 64 KB 64 KB two 320 KB Personal Computer ISA, 8-bit 5 2 Intel 8088 4.77 64 KB 64 KB 160 KB Shipped without keyboard; includes adapter for integration with IBM 3278 terminal systems Personal Computer ISA, 8-bit 5 2 Intel 8088 4.77 64 KB 64 KB 320 KB Shipped without keyboard; includes adapter for integration with IBM 3278 terminal systems Personal Computer ISA, 8-bit 5 2 Intel 8088 4.77 64 KB 64 KB two 320 KB Shipped without keyboard; includes adapter for integration with IBM 3278 terminal systems Personal Computer ISA, 8-bit 5 2 Intel 8088 4.77 64 KB 256 KB 160 KB Personal Computer ISA, 8-bit 5 2 Intel 8088 4.77 64 KB 256 KB 320 KB Personal Computer ISA, 8-bit 5 2 Intel 8088 4.77 64 KB 256 KB two 320 KB Personal Computer ISA, 8-bit 5 2 Intel 8088 4.77 64 KB 256 KB Diskless model; only means of data storage is through IBM Cassette BASIC Personal Computer ISA, 8-bit 5 2 Intel 8088 4.77 256 KB 256 KB 360 KB Personal Computer ISA, 8-bit 5 2 Intel 8088 4.77 256 KB 256 KB two 360 KB Personal Computer ISA, 8-bit 5 2 Intel 8088 4.77 256 KB 256 KB 360 KB Shipped without keyboard Personal Computer ISA, 8-bit 5 2 Intel 8088 4.77 256 KB 256 KB two 360 KB Shipped without keyboard Personal Computer XT ISA, 8-bit 8 2 Intel 8088 4.77 128 KB 640 KB 360 KB 10 MB Personal Computer XT ISA, 8-bit 8 2 Intel 8088 4.77 256 KB 640 KB 360 KB 10 MB Personal Computer XT ISA, 8-bit 8 2 Intel 8088 4.77 256 KB 640 KB 360 KB Personal Computer XT ISA, 8-bit 8 2 Intel 8088 4.77 256 KB 640 KB two 360 KB Personal Computer XT ISA, 8-bit 8 2 Intel 8088 4.77 512 KB 640 KB 360 KB 20 MB Shipped with original IBM PC "Model F" keyboard Personal Computer XT ISA, 8-bit 8 2 Intel 8088 4.77 512 KB 640 KB 360 KB 20 MB Shipped with Enhanced Keyboard Personal Computer XT ISA, 8-bit 8 2 Intel 8088 4.77 256 KB 640 KB 360 KB Shipped with original IBM PC "Model F" keyboard Personal Computer XT ISA, 8-bit 8 2 Intel 8088 4.77 256 KB 640 KB 360 KB Shipped with Enhanced Keyboard Personal Computer XT ISA, 8-bit 8 2 Intel 8088 4.77 256 KB 640 KB two 360 KB Shipped with original IBM PC "Model F" keyboard Personal Computer XT ISA, 8-bit 8 2 Intel 8088 4.77 256 KB 640 KB two 360 KB Shipped with Enhanced Keyboard 3270 PC ISA, 8-bit 8 2 Intel 8088 4.77 256 KB 640 KB 360 KB Without printer adapter, fixed disk adapter, and keyboard 3270 PC ISA, 8-bit 8 2 Intel 8088 4.77 256 KB 640 KB 360 KB Without printer adapter and fixed disk adapter 3270 PC ISA, 8-bit 8 2 Intel 8088 4.77 320 KB 640 KB 360 KB Without fixed disk adapter; stock onboard RAM increased to 384 KB in June 1984 3270 PC ISA, 8-bit 8 2 Intel 8088 4.77 320 KB 640 KB 360 KB 10 MB With fixed disk adapter; stock onboard RAM increased to 384 KB in June 1984 Personal Computer XT/370 ISA, 8-bit 8 2 Intel 8088 4.77 256 KB 640 KB 360 KB Personal Computer XT/370 ISA, 8-bit 8 2 Intel 8088 4.77 256 KB 640 KB 360 KB 10 MB Personal Computer XT/370 ISA, 8-bit 8 2 Intel 8088 4.77 256 KB 640 KB 360 KB 10 MB PCjr Custom Intel 8088 4.77 64 KB 128 KB PCjr Custom Intel 8088 4.77 128 KB 128 KB 360 KB Portable Personal Computer ISA, 8-bit 8 2 Intel 8088 4.77 256 KB 512 KB 360 KB Portable Personal Computer ISA, 8-bit 8 2 Intel 8088 4.77 256 KB 512 KB two 360 KB Personal Computer AT ISA, 16-bit 8 3 Intel 80286 6 256 KB 512 KB 1.2 MB Personal Computer AT ISA, 16-bit 8 3 Intel 80286 6 512 KB 512 KB 1.2 MB 20 MB Personal Computer AT ISA, 16-bit 8 3 Intel 80286 6 512 KB 512 KB 1.2 MB 30 MB Personal Computer AT ISA, 16-bit 8 3 Intel 80286 6 512 KB 512 KB 1.2 MB two 30 MB Includes controllers for the IBM 4680 Store System Personal Computer AT ISA, 16-bit 8 3 Intel 80286 6 512 KB 512 KB 1.2 MB two 20 MB Includes controllers for the IBM 4680 Store System Personal Computer AT ISA, 16-bit 8 3 Intel 80286 8 512 KB 512 KB 1.2 MB 30 MB Personal Computer AT ISA, 16-bit 8 3 Intel 80286 8 512 KB 512 KB 1.2 MB 30 MB Shipped with Enhanced Keyboard Personal Computer AT ISA, 16-bit 8 3 Intel 80286 8 512 KB 512 KB 1.2 MB Built to TEMPEST specifications Personal Computer AT ISA, 16-bit 8 3 Intel 80286 8 512 KB 512 KB 1.2 MB 30 MB Built to TEMPEST specifications Personal Computer AT/370 ISA, 16-bit 8 3 Intel 80286 6 512 KB 512 KB 1.2 MB 20 MB Personal Computer AT/370 ISA, 16-bit 8 3 Intel 80286 6 512 KB 512 KB 1.2 MB 30 MB Personal Computer AT/370 ISA, 16-bit 8 3 Intel 80286 6 512 KB 512 KB 1.2 MB 30 MB 1 MB total RAM (peripheral) Personal Computer AT/370 ISA, 16-bit 8 3 Intel 80286 6 512 KB 512 KB 1.2 MB 30 MB 1 MB total RAM (peripheral); shipped with Enhanced Keyboard PC Convertible ISA, 8-bit (proprietary) Intel 8088 4.77 256 KB 512 KB two 720K Application bundle PC Convertible ISA, 8-bit (proprietary) Intel 8088 4.77 256 KB 512 KB two 720K Personal Computer XT Model 286 ISA, 16-bit 8 2 Intel 80286 6 640 KB 640 KB 1.2 MB 20 MB Industrial Computer 5531 ISA, 8-bit 8 3 Intel 8088 4.77 128 KB 640 KB 360 KB 10 MB Industrial version of the IBM PC XT Industrial Computer 5531 ISA, 8-bit 8 3 Intel 8088 4.77 256 KB 640 KB 1.2 MB Industrial version of the IBM PC XT Industrial Computer 5531 ISA, 8-bit 8 3 Intel 8088 4.77 256 KB 640 KB 1.2 MB 20 MB Industrial version of the IBM PC XT 7531 Industrial Computer ISA, 16-bit 8 3 Intel 80286 6 512 KB 1 MB Industrial version of the IBM PC AT, tower form-factor 7532 Industrial Computer ISA, 16-bit 8 3 Intel 80286 6 512 KB 1 MB Industrial version of the IBM PC AT, 19-inch rack-mountable form factor Industrial Computer 7552 ISA, 16-bitMCA, 16-bit 8 3 Intel 80286 10 4 MB Also known as "Gearbox", rack-mountable ruggedized modular industrial computer, hybrid MCA and ISA with compromised ISA signal lines—notable for introducing the (16-bit) Micro Channel architecture half a year before the announcement of the PS/2 line in April 1987 Industrial Computer 7552 ISA, 16-bitMCA, 16-bit 8 3 Intel 80286 10 4 MB one 1.44 MB 20 MB Also known as "Gearbox", rack-mountable ruggedized modular industrial computer, hybrid MCA and ISA with compromised ISA signal lines—notable for introducing the (16-bit) Micro Channel architecture half a year before the announcement of the PS/2 line in April 1987

Successor lines Personal System/2 (list of models) Industrial System (list of models) PCradio (list of models) Ambra (list of models) PS/note (list of models) EduQuest (list of models) ThinkPad PS/ValuePoint (list of models) Aptiva (list of models) PC Series (list of models) NetVista ThinkCentre

Timeline

List of IBM Personal Computer models

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