AlphaStation

This article is about the 1990s DEC computer workstations. For the NASA space station design that evolved into the ISS, see Space Station Alpha. For the Bigelow Aerospace project, see Space Complex Alpha.

AlphaStation is the name given to a series of computer workstations, produced from 1994 onwards by Digital Equipment Corporation, and later by Compaq and HP. As the name suggests, the AlphaStations were based on the DEC Alpha 64-bit microprocessor. Supported operating systems for AlphaStations comprise Tru64 UNIX (formerly Digital UNIX), OpenVMS and Windows NT (with AlphaBIOS ARC firmware). Most of these workstations can also run various versions of Linux and BSD operating systems.

AlphaStation

Rack-mounted AlphaStation
Developer	DEC (1994-1998) Compaq (1998-2002) HP (2002-2007)
Type	Workstation
Release date	1994 (1994)
Discontinued	2007 (2007)
CPU	DEC Alpha

Other Alpha workstations produced by DEC include the DEC 2000 AXP (DECpc AXP 150), the DEC 3000 AXP, the Digital Personal Workstation a-series and au-series (codename Miata), the Multia VX40/41/42 and the Alpha XL/Alpha XLT line (a member of the Alcor family, which had swappable daughterboard with Pentium processor, to transform to a DEC Celebris XL line).

Models

From the XP900 onwards, all AlphaStation models were simply workstation configurations of the corresponding AlphaServer model.

Digital AlphaStation 200 4/233

DEC AlphaStation 600A

Avanti family

Model	Code name	# of CPUs	CPU	CPU MHz	B-cache	Chipset	Memory	Expansion	Enclosure	Introduced	Discontinued
200 4/100	Mustang	1	21064 (EV4)	100	512 KB	21071	8 to 384 MB	1 PCI 1 or 2 PCI/ISA 1 ISA	Desktop	1995-02-23	?
200 4/166				166						1994-11-03[1]	?
200 4/233	Mustang+		21064A (EV45)	233							?
205 4/xxx	LX3	1	21064A (EV45)	133 to 333	?	?	?	?	Desktop	?	?
250 4/266	M3	1	21064A (EV45)	266	2 MB	21072	32 to 512 MB	1 PCI 1 PCI/ISA 1 ISA	Desktop	1995-04-03	?
255/233	LX3+	1	21064A (EV45)	233	1 MB	21072	32 to 512 MB	2 PCI 1 PCI/ISA 1 ISA	Desktop	1996-03-06	?
255/300				300							?
400 4/166	Chinet	1	21064 (EV4)	166	512 KB	21071	8 to 384 MB	2 PCI 1 PCI/ISA 3 ISA	Tower	1995-02-23	?
400 4/233	Avanti		21064A (EV45)	233						1994-11-03[1]	?
400 4/266				266						?	?
400 4/300				300						?	?

Alcor Family

Model	Code name	# of CPUs	CPU	CPU MHz	B-cache	Chipset	Memory	Expansion	Enclosure	Introduced	Discontinued
500/266	Maverick	1	21164 (EV5)	266	2 MB	21171	32 to 512 MB	1 33 MHz PCI-X 3 PCI	Desktop	1996-03-06	?
500/333				333							?
500/400	Bret		21164A (EV56)	400		21172	32 MB to 1 GB				?
500/500				500	8 MB					1996-08-06[2]	?
600 5/266	Alcor	1	21164 (EV5)	266	2 or 4 MB	21171	32 MB to 1 GB	3 33 MHz PCI-X 1 PCI 1 PCI/EISA 3 EISA	Pedestal	1995-08-02	?
600 5/300				300							?
600 5/333				333	4 MB					?	?

Noritake and Rawhide Family

Model	Code name	# of CPUs	CPU	CPU MHz	B-cache	Chipset	Memory	Expansion	Enclosure	Introduced	Discontinued
Noritake Family
600A 5/500	Alcor-Primo	1	21164A (EV56)	500	8 MB	?	32 MB to 1 GB	7 PCI 2 EISA	Pedestal	?	?
Rawhide Family
12001	DaVinci	Up to 2	21164A (EV56)	400	4 MB	?	512 MB to 4 GB	5 PCI 1 PCI/ISA	Pedestal	?	?
				533		?				?	?

Tsunami Family

Model	Code name	# of CPUs	CPU	CPU MHz	B-cache	Chipset	Memory	Expansion	Enclosure	Introduced	Discontinued
DS10 VS10 TS10 XP900	WebBrick	1	21264 (EV6)	466	2 MB	21272	256 MB to 2 GB 100 MHz SDRAM	3 PCI-X 1 PCI	Desktop	?	?
			21264A (EV67)	600						?	?
DS20E	Goldrack	1, 2	21264A (EV67)	667	8 MB (DDR)	21272	512 MB to 4 GB	5 PCI-X 1 PCI-X/ISA	Tower	?	?
			21264B (EV68AL)	833						?	?
ES40	Clipper	1, 2, 3, 4	21264A (EV67)	667	8 MB (DDR)	21272	512 MB to 32 GB 100 MHz SDRAM	6 or 10 PCI-X	Pedestal	?	?
			21264B (EV68AL)	833						?	?
XP1000	Monet	1	21264 (EV6)	500	4 MB	21272	256 MB to 2 GB	2 PCI-X 2 PCI 1 PCI/ISA	Tower	1999-02-01[3]	?
	Brisbane		21264A (EV67)	667						?	?

Titan and Marvel Family

Model	Code name	# of CPUs	CPU	CPU MHz	B-cache	Chipset	Memory	Expansion	Enclosure	Introduced	Discontinued
Titan Family
DS15A	HyperBrick II	1	21264C (EV68CB)	1000	2 MB	?	512 MB to 4 GB 133 MHz SDRAM	4 33 MHz PCI-X 2 66 MHz PCI-X	Desktop	?	?
DS25	Granite	1, 2	21264C (EV68CB)	1000	8 MB (DDR)	?	512 MB to 16 GB	4 66 MHz PCI-X 2 33 MHz PCI-X	Tower	?	?
Marvel Family
ES47	Marvel 2P	22	21364 (EV7)	1000	1.75 MB	On-die	512 MB to 16 GB RDRAM	1 2× AGP 1 133 MHz PCI-X 4 66 MHz PCI-X	Tower	?	?

^1 A variant of the AlphaStation 1200 was also sold as the Digital Ultimate Workstation 533au².
^2 Some systems had one of the microprocessors deactivated, which may be reactivated with a license upgrade.