IRIS Crimson Technical Highlights:
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 o  NEW CPU Board
     -  Uses R4000SC superpipelined CPU
     -  50 MHz external, 100MHz internal, clock rate
     -  First-level cache is 8KB instruction + 8KB data
     -  Second-level cache is 1MB instruction-and-data, 15nsec RAM
     -  Memory-to-cache transfer rates of up to 400MB/sec
     -  16Mb base memory, expandable in 16MB and 64MB increments
	   to a total of 256MB with ECC, SECDED
     -  1MB EPROM, 4 RS-232 ports, timer and LED register

 o  NEW Graphics Subsystems (more info below)
     -  fast (XS)
     -  faster (XS24)
     -  fastest (Elan)

 o  Uses 64 MByte/second Crimson bus

 o  Contains 2 full-height and 2 half-height 5-1/4" SCSI peripheral slots

 o  Disk striping across two SCSI busses is a standard feature in all
    systems configured with two or more SCSI disks. Striped SCSI disks
    deliver a sustained data transfer rate in excess of 4MB/sec.

 o  Fully upwardly binary compatible with all IRIS 4D products

 o  Power: 1500 Watts. (excellent SPECMarks-per-watt)

IRIS Crimson information from the glossy brochure:
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IRIS Crimson Features

 o  Superpipelined R4000SC processor with a 50MHz external clock
    and 100MHz internal clock.

 o  Choice of six high performance 3D graphics subsystems deliver
    performance and features to match any application.

 o  Up to 256 MB memory, and internal disk capacity up to 3.6GB,
    expandable to greater than 48GB using additional enclosures.

 o  High performance I/O subsystem includes four VME expansion
    slots, Ethernet, and two SCSI channels with disk striping
    support.


IRIS Crimson Configurations

    IRIS Crimson/S
	CPU-only server configuration with no graphics; useful as
	a fast compute or file server.

    IRIS Crimson/Entry
	Entry graphics with eight bitplane subsystem in including
	software Z-buffer and hardware-assisted dithering to produce
	24-bit color. Screen resolution is 1024x768. Ideal for
	applications requiring high X Window, 2D vector or 3D
	vector performance, Crimson Entry also provides full GL(tm)
	graphics capability at very low cost to compute-oriented
	applications.

    IRIS Crimson/XS
	Includes all Entry features, plus 1280x1024 screen resolution,
	optional hardware Z-buffer, and one Geometry Engine(tm)
	processor to increase polygon performance. Crimson XS offers
	low-cost solids modelling capability for compute-intensive
	applications.

    IRIS Crimson/XS24
	Includes all XS features, plus 24 bitplane color. The
	Crimson/XS24 is well suited to compute intensive applications
	requiring full color imaging or solids modelling capability.

    IRIS Crimson/Elan
	Includes all XS24 features, plus standard hardware Z-buffer
	and four Geometry Engine processors to increase polygon
	performance. Crimson Elan delivers smooth screen motion of
	complex geometry, coupled with high compute performance.

    IRIS Crimson/VGX
	The Crimson/VGX delivers the fastest polygon performance
	available on any workstation, along with hardware-assisted
	anti-aliasing and texture mapping. The Crimson/VGX is the
	most powerful machine available for display of complex
	scenes and objects and is well-suited to applications
	requiring limited texture mapping.

    IRIS Crimson/VGXT
	Includes all VGX features, plus higher performance texture
	mapping. The Crimson/VGXT is a low-cost solution for compute
	intensive applications requiring complex texture mapping.