VAX 88x0

VAX 8810/8820/8830/8840
Summary
Announcement date:	March 1988
FRS date:	April 1988
Codename:	PolarStar
Descriptive name:	VAX 8810/8820/8830/8840
OS support (VMS):	VMS V5.0
CPU Details
Number of processors:	1-4
CPU technology:	ECL Gate Array
CPU cycle time:	45ns [1]
Instruction-buffer:	16 bytes [1]
Writable Control Store:	16K 144-bit words [1]
User Writable Control Store:	1K 144-bit words [1]
Cache:	64KB [1]
Compatibility mode:	No
Console processor:	MicroVAX II
Console device:	None
CPU-names:	{VAX 8810}{VAX 8820}{VAX 8830}{VAX 8840}
Memory
Minimum memory:	48MB
Maximum memory:	512MB [1]
Memory checking:	7-bit ECC/longword [1]
I/O
Max I/O throughput:	30MB/s [1]
VAXBI:	1-6 @ 13.3MB/s
LAN support:	optional
Performance
VUPs:	{6.0} {11.0} {17.0} {22.0} [1]

The VAX 8810/8820/8830/8840 systems are four VAX 88x0 computer models, the difference between them being the number of CPUs installed in the basic cabinet:

• VAX 8810 - 1 CPU
• VAX 8820 - 2 CPUs
• VAX 8830 - 3 CPUs
• VAX 8840 - 4 CPUs

The first three may be upgraded in the field by the installation of additional CPU(s).

Additionally there is a prepackaged VAXcluster system VAX 8842 made of two VAX 8820.

References

[1] VAX Systems Hardware Handbook -- VAXBI Systems. EB-31692-46

External links

• VAX 8820/8830/8840 System Hardware User's Guide (EK-8840H-UG-001)