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IBM Personal Computer XT (5160)

5160 · 1983–1987 · desktop

Specifications

Cpu: Intel 8088, 4.77 MHz
Ram: max: 640 KB with expansion cards populated · base: 128 KB on the motherboard
Ports: Keyboard port (5-pin DIN) · 8 internal ISA expansion slots · Parallel (Centronics) via add-in card · Serial (RS-232) via add-in card · Composite video via CGA card
Display: IBM Color Graphics Adapter (CGA, optional) up to 320x200 in 4 colors or 640x200 monochrome, or IBM Monochrome Display Adapter (MDA) 80x25 text only; both sold as separate cards
Storage: base: 10 MB internal hard drive plus one 5.25" 360 KB floppy drive · options: 20 MB internal hard drive (later revision) · Second 5.25" floppy drive in place of the hard drive
Os Support: latest: PC DOS 3.3, hardware permitting; the 8088 CPU and ISA bus limited practical later use · shipped: PC DOS 2.0
Release Price: $4,995

Upgrade paths

RAM

640 KB total via memory expansion cards in the 8 ISA slots · The extra slots over the 5150 (8 vs 5) made the XT a popular clone-card upgrade target.

~$700 at the time for a fully populated 640 KB configuration

MODERATE

storage

10 MB or 20 MB internal hard drive, officially supported for the first time in the IBM PC line · The XT was the first IBM PC with a factory-supported internal hard drive, a major differentiator from the 5150.

~$1,500 to ~$2,000 for a period 20 MB drive kit

MODERATE

CPU

Intel 8087 math coprocessor added to the empty socket next to the 8088 · Only accelerated floating-point math for software written to use it.

~$150-$200 at the time

EASY