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Single-rack Onyx2
ManufacturerSilicon Graphics, Inc.
Release date1996 (1996)
DiscontinuedJune 27, 2003 (2003-06-27)
Operating systemIRIX 6.4 or 6.5
CPUMIPS architecture
GraphicsReality and InfiniteReality
SuccessorOnyx 3000

The Onyx2, code name Kego, is a family of visualization systems developed and manufactured by SGI, introduced in 1996 to succeed the Onyx. The Onyx2's basic system architecture is based on the Origin 2000 servers, but with the inclusion of graphics hardware. In 2000, the Onyx2 was succeeded by the Onyx 3000, and it was discontinued on June 27, 2003. These systems run either IRIX 6.4 or 6.5.


Model # of CPUs Memory # of graphics pipelines Chassis Introduced Discontinued
Onyx2 Deskside 1 to 4 128 MB to 8 GB 1 Deskside ? June 27, 2003
Onyx2 Single Rack 2 to 8 128 MB to 16 GB 1 or 2 Single rack ? June 27, 2003
Onyx2 Multi-Rack 4 to 128 256 MB to 256 GB 1 to 16 Multi Rack ? June 27, 2003


The Onyx2 uses the MIPS R10000 microprocessor clocked at 150, 175, 180 and 195 MHz, later increased to 250 MHz, courtesy of a process shrink from 0.35 to 0.25 micrometers. Later 300 and 400 MHz R12000, and 500 MHz R14000 CPUs were made available.

Graphics subsystem

At the time of their introduction, the Onyx2 could be configured with the Reality, InfiniteReality, or InfiniteReality2 graphics subsystems. Later, the InfiniteReality2E was made available and then the InfiniteReality3, in April 2000.

SGI timeline

SGI PrismSGI Origin 3000 and Onyx 3000Origin 2000SGI ChallengeOnyx 300Onyx 2SGI OnyxSGI CrimsonSGI AltixSGI Origin 200SGI Indigo² and Challenge MSGI TezroSGI Octane2SGI OctaneSGI Indigo² and Challenge MSGI IRIS 4DSGI FuelSGI IndigoSGI IRIS 4DSGI O2SGI O2SGI IndySGI IRIS 4DSGI IRISSGI IRISSGI IRISVisual WorkstationSGI IRISSGI IRIS


Preceded byOrigin 200 SGI Origin 2000 1996 - 2003 Succeeded byOrigin 3000 Preceded byOnyx SGI Onyx 2 1996 - 2003 Succeeded byOnyx 3000