Amstrad PC9555i

The Amstrad PC9555i was the Pentium-based flagship of the PC9000 family. Introduced in 1995, it was offered with 75, 90 and 100 MHz Pentium processors and combined PCI expansion with enhanced IDE storage support.

Standard systems included 8MB of RAM, 256KB cache, DOS 6.2 and Windows 3.11, with later examples and upgrades commonly running Windows 95. The PC9555i marked Amstrad’s move into the first generation of mainstream Pentium PCs.

Notable Features

• Available with 75, 90 and 100 MHz Intel Pentium processors.
• 8MB RAM and 256KB cache were standard in launch configurations.
• PCI bus and dual enhanced-IDE interfaces supported contemporary expansion and storage.

Historical Significance

• Brought Amstrad’s desktop line into the Pentium era.
• One of the company’s last conventional PC families before the Integra multimedia PC/TV.

Collectors Notes

• PC9555i configurations and later upgrades vary considerably.
• Check the fitted Pentium, RAM, graphics card and storage rather than relying only on the case badge.

Specifications

Technical Information
Name	Amstrad PC9555i
Manufacturer	Amstrad
Launched	Sunday, January 1, 1995
Discontinued	Mid to late 1990s
Country	United Kingdom
CPU	Intel Pentium at 75, 90 or 100 MHz, depending on configuration
Units Sold
Sound	Configuration dependent; multimedia systems included 16-bit audio
Processor Upgrade	Designed to accept later compatible Pentium processors
Storage Interface	Dual enhanced IDE
Operating System	MS-DOS 6.2 and Microsoft Windows 3.11; later systems used Windows 95
Expansion	PCI and ISA expansion
Storage	1.44MB floppy drive and enhanced-IDE hard disk
Graphics	SVGA graphics; card and memory varied by configuration
Cache	256KB
RAM	8MB standard, expandable
CPU Speed	75, 90 or 100 MHz at launch