The SGI Tezro is a series of high-end

computer workstation A workstation is a special computer designed for technical or scientific applications. Intended primarily to be used by a single user, they are commonly connected to a local area network and run multi-user operating systems. The term ''work ...

s sold by SGI from 2003 until 2006. Using MIPS CPUs and running

IRIX IRIX ( ) is a discontinued operating system developed by Silicon Graphics (SGI) to run on the company's proprietary MIPS workstations and servers. It is based on UNIX System V with BSD extensions. In IRIX, SGI originated the XFS file system ...

, it is the immediate successor to the SGI Octane line. The systems were produced in both rack-mount and tower versions, and the series was released in June 2003 with a list price of . The Tezro was released alongside the

SGI Onyx4 SGI may refer to: Companies * Saskatchewan Government Insurance * Scientific Games International, a gambling company * Silicon Graphics, Inc., a former manufacturer of high-performance computing products * Silicon Graphics International, formerly ...

and rack-mountable Tezros share many components with it, including plastic skins. The rack-mounted Tezros are functionally very similar to an Infinite Performance-equipped SGI Onyx350. Tezro marked the return of the original cube logo to SGI machines. It was replaced in 2008 by the

SGI Virtu SGI Virtu is a computer product line from Silicon Graphics dedicated to visualization, announced in April 2008. It represents a return of Silicon Graphics to the visualization market after several years of focus on high-performance computing. ...

product line.

Technical specifications

Architecture

Similar to other SGI systems, the Tezro uses a non-blocking crossbar interconnect to connect all subsystems together. Tezro is based on SGI's

Origin 3000 The Origin 3000 and the Onyx 3000 is a family of mid-range and high-end computers developed and manufactured by SGI. The Origin 3000 is a server, and the Onyx 3000 is a visualization system. Both systems were introduced in July 2000 to succeed ...

architecture. ARCS is provided as the boot

firmware In computing, firmware is a specific class of computer software that provides the low-level control for a device's specific hardware. Firmware, such as the BIOS of a personal computer, may contain basic functions of a device, and may provide ...

, as with other SGI computer systems of that era.

Processors

Tezro systems use two or four 64-bit MIPS R16000

microprocessor A microprocessor is a computer processor where the data processing logic and control is included on a single integrated circuit, or a small number of integrated circuits. The microprocessor contains the arithmetic, logic, and control circu ...

s. The following R16000 processor types were available options: Node boards from Onyx/Origin 350/3900 systems are compatible and use the same RAM. For example, a quad-R16K/700 MHz (8 MB L2) board from a CX-Brick will work in a Tezro; likewise, other boards up to the same quad-1 GHz edition.

Memory

The Tezro shipped with 512 MB of DDR

SDRAM Synchronous dynamic random-access memory (synchronous dynamic RAM or SDRAM) is any DRAM where the operation of its external pin interface is coordinated by an externally supplied clock signal. DRAM integrated circuits (ICs) produced from the ...

. It can be expanded using proprietary

DIMM A DIMM () (Dual In-line Memory Module), commonly called a RAM stick, comprises a series of dynamic random-access memory integrated circuits. These memory modules are mounted on a printed circuit board and designed for use in personal compute ...

s. The tower version can hold up to 8 GB of

main memory Computer data storage is a technology consisting of computer components and recording media that are used to retain digital data. It is a core function and fundamental component of computers. The central processing unit (CPU) of a comput ...

total, and the rack version can hold up to 8 GB per brick (2 bricks can be directly linked by NUMAlink cables, or up to 8 with the use of a NUMAlink Router).

Graphics

Tezro supports the

VPro The VPRO (stylized vpro; originally an acronym for , ) is a Dutch public broadcaster, which forms a part of the Dutch public broadcasting system. Founded in 1926 as a liberal Protestant broadcasting organization, it gradually became more so ...

V10 and V12 graphics options. Dual-channel options were produced for the desktop variants allowing up to two 1920x1200 displays, while dual-head, dual-channel were available for the rack version, allowing a fully equipped rackmount Tezro to drive up to four 1920x1200 displays at once.

Audio

Tower systems shipped with analog audio output as standard, and

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cards provide audio capabilities (including 2-channel 24-bit AES and 8-channel ADAT connectors) on rack-mountable versions.

Expansion

The number of available 64-bit PCI slots included in a Tezro system depends upon the number of CPUs installed in the system: * 7 133/100 MHz slots in two- or four-CPU tower systems * 3 133/100 MHz slots in single-CPU tower systems * 6 100 MHz slots and two 66 MHz slots in 4U rackmountable systems * 2 100 MHz slots and one 66 MHz slot in 2U rackmountable systems. All PCI slots in each Tezro model are 3.3V card slots. A single U160 SCSI connector was produced for attaching external peripherals, as was an optional

FireWire IEEE 1394 is an interface standard for a serial bus for high-speed communications and isochronous real-time data transfer. It was developed in the late 1980s and early 1990s by Apple in cooperation with a number of companies, primarily Sony a ...

card.

References

External links

{{DEFAULTSORT:Sgi Tezro Tezro Advanced RISC Computing 64-bit computers