DEC 3000 AXP

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DEC 3000 AXP was the name given to a series of computer workstations and servers, produced from 1992 to around 1995 by Digital Equipment Corporation. The DEC 3000 AXP series formed part of the first generation of computer systems based on the DEC Alpha AXP 64-bit microprocessor. Supported operating systems for the DEC 3000 AXP series were OSF/1 AXP (later renamed Digital UNIX) and OpenVMS.

All DEC 3000 AXP models used the 21064 (EV4) or 21064A (EV45) variants of the Alpha AXP processor and inherited various features from the earlier MIPS architecture-based DECstation models, particularly the TURBOchannel bus.

The DEC 3000 AXP series was superseded by the AlphaStation/AlphaServer line.

[edit] Models

There were three DEC 3000 model families, codenamed Pelican, Sandpiper, and Flamingo. Within Digital, this led to the DEC 3000 series being affectionately referred to as "the seabirds".

The Sandpiper and Flamingo used proprietary wide (64 bits plus parity) Fast Page Mode SIMMs of either 4 MB, 8 MB, 16 MB or 32 MB capacity. These were eight-way interleaved, providing an astonishing 512-bit-wide bus to memory. The Sandpiper had two such eight-SIMM banks, for up to 512MB total system RAM, while the Flamingo had four banks and supported up to 1GB. In comparison, the Pelican was a budget architecture utilising eight standard 72-pin Fast Page Mode parity SIMMs of either 8 MB or 32 MB capacity, for a total of up to 256 MB RAM. These were two-way interleaved, allowing a 64-bit-wide bus to memory.

Model	Codename	CPU	CPU MHz	Chassis
Model 300	Pelican	EV4	150	desktop
Model 300L	Pelica	EV4	100	desktop
Model 300X	Pelican+	EV4	175	desktop
Model 300LX	Pelica+	EV4	125	desktop
Model 400	Sandpiper	EV4	133	desktop
Model 500	Flamingo	EV4	150	pedestal
Model 500X	Hot Pink	EV4	200	pedestal
Model 600	Sandpiper+	EV4	175	desktop
Model 700	Sandpiper45	EV45	225	desktop
Model 800	Flamingo II	EV4	200	pedestal
Model 900	Flamingo45	EV45	275	pedestal