At present I have the following system for sale:
Onyx rack system (great condition)
24 CPUs (ie. 24 x R10000SC 195MHz [1MB L2], using 6 CPU boards)
2GB RAM (using four MC3 boards, 2 x 256MB kits on each board, 8-way interleaving)
4.3GB FastWide Differential system disk
36GB option disk (80pin with adapter)
2X vertically-usable CDROM (*)
FDDI Option
RealityEngine2 Graphics (2RM4)
Original granite SGI Onyx keyboard and mouse (with the very long cable)
Serial cable for VT terminal included, plus some other serial cables
and misc items. I can include a VT terminal for extra, or an old PC
with HyperTerminal for free.
(*) The unit is a Toshiba XM-4101B, which is fully bootable and can be
used vertically or even upside down. I would put in a modern 32X,
but most modern CDROMs can't be used vertically. Alternatively,
I can include an external 32X unit instead.
21" Monitor & 3m cable available for free if required. Or I can include
a 10m monitor cable for +40.
The system is wired for a normal single-phase 240V supply, and can
thus be driven from a normal mains 240V source. Under normal
operation the power consumption is about 10A. The system connection
itself is via a 24A large socket - the original cable and custom
converter cable are included, with a heavy duty mains plug attached
for connection to a mains supply.
All doors, panels, indicators, etc. are fully intact. Photos
available on request.
This unit has the maximum number of CPUs an Onyx can have, but
there is still space for two extra graphics pipes or other options.
The system also has the most efficient RAM kits installed, ie. it
can be expanded to the full 16GB RAM without removing any existing
RAM modules.
1995 UKP + shipping, or collect.
Here are some pictures:


onyx# hinv -v -m
CPU Board at Slot 5: (Enabled)
Processor 0 at Slot 5/Slice 0: 194 Mhz R10000 with 1 MB secondary cache (Enabled)
Processor 1 at Slot 5/Slice 1: 194 Mhz R10000 with 1 MB secondary cache (Enabled)
Processor 2 at Slot 5/Slice 2: 194 Mhz R10000 with 1 MB secondary cache (Enabled)
Processor 3 at Slot 5/Slice 3: 194 Mhz R10000 with 1 MB secondary cache (Enabled)
CPU Board at Slot 10: (Enabled)
Processor 4 at Slot 10/Slice 0: 194 Mhz R10000 with 1 MB secondary cache (Enabled)
Processor 5 at Slot 10/Slice 1: 194 Mhz R10000 with 1 MB secondary cache (Enabled)
Processor 6 at Slot 10/Slice 2: 194 Mhz R10000 with 1 MB secondary cache (Enabled)
Processor 7 at Slot 10/Slice 3: 194 Mhz R10000 with 1 MB secondary cache (Enabled)
CPU: MIPS R10000 Processor Chip Revision: 2.6
FPU: MIPS R10010 Floating Point Chip Revision: 2.6
Main memory size: 2048 Mbytes, 8-way interleaved
MC3 Memory Board at Slot 1: 512 MB of memory (Enabled)
Bank A contains 64 MB SIMMS (Enabled)
Bank B contains 64 MB SIMMS (Enabled)
MC3 Memory Board at Slot 2: 512 MB of memory (Enabled)
Bank A contains 64 MB SIMMS (Enabled)
Bank B contains 64 MB SIMMS (Enabled)
MC3 Memory Board at Slot 3: 512 MB of memory (Enabled)
Bank A contains 64 MB SIMMS (Enabled)
Bank B contains 64 MB SIMMS (Enabled)
MC3 Memory Board at Slot 4: 512 MB of memory (Enabled)
Bank A contains 64 MB SIMMS (Enabled)
Bank B contains 64 MB SIMMS (Enabled)
Instruction cache size: 32 Kbytes
Data cache size: 32 Kbytes
Secondary unified instruction/data cache size: 1 Mbytes
Integral SCSI controller 0: Version WD33C95A, differential, revision 0
Disk drive: unit 1 on SCSI controller 0 (unit 1)
CDROM: unit 4 on SCSI controller 0
Disk drive: unit 7 on SCSI controller 0 (unit 7)
Integral SCSI controller 1: Version WD33C95A, differential, revision 0
Disk drive: unit 1 on SCSI controller 1 (unit 1)
Integral EPC serial ports: 4
Integral EPC parallel port: Ebus slot 11
RealityEngineII Graphics Pipe 0 at IO Slot 11 Physical Adapter 2 (Fchip rev 2)
Integral Ethernet controller: et0, Ebus slot 11
I/O board, Ebus slot 11: IO4 revision 1
VME bus: adapter 45
VME bus: adapter 0 mapped to adapter 45
EPC external interrupts
onyx# /usr/gfx/gfxinfo
Graphics board 0 is "RES" graphics.
Managed (":0.0") 1280x1024
Display 1280x1024 @ 60Hz
12 GE (GE10 rev. 0x7)
2 RM4 boards
Small pixel depth
10-bit RGBA pixels
Not using Multi-Channel Option
Personal collection is best, for which I would recommend the use
or hire of a van with a tail lift (eg. a Ryder truck). The unit is 5'
5" high, about 4' deep and is pretty heavy, but it moves very easily
on its rollers. Also note that transportation in terms of general
mobility (eg. if it has to be moved up some steps) can be greatly
improved by temporarily removing the door panels, side panels, fan
blowers and the two power supply units - this is all very easy to
do. A truck's tail lift also allows one to maneuver the system over
many steps if required. If you'd like me to organise delivery,
then the cost would be approx. 150 + petrol costs for the destination,
though this only applies to locations that are within roughly 140km
of Edinburgh. For anywhere further, the buyer should organise
the use of a suitable van, eg. via rental or loan.
The system has a full installation of IRIX 6.5.22m with lots of extras. I'll basically shove on everything I can find (about 10GB of software in total), and I'll include a free set of original IRIX CDs, along with various other bits & pieces which may be useful - a couple of serial cables, etc.
Email if interested!