SGI Tezro
| Company type | Product line |
|---|---|
| Industry | Computer workstations |
| Predecessor | SGI Octane |
| Founded | June 2003 |
| Defunct | 2006 |
| Successor | SGI Virtu |
| Products | Computer workstations |
The SGI Tezro lineup represented a premium range of computer workstations marketed by SGI between 2003 and 2006. Utilizing MIPS processors and running the IRIX operating system, it was introduced as the successor to the SGI Octane series. Offered in both tower and rack-mounted configurations, the series launched in June 2003 with a starting price of . The Tezro was unveiled concurrently with the SGI Onyx 4; its rack-mount variants share numerous components with this system, including similar plastic exterior panels. In terms of functionality, rack-mounted Tezro units are comparable to an SGI Onyx350 equipped with Infinite Performance capabilities. This product also marked the reintroduction of SGI’s original cube logo.
In 2008, the Tezro was succeeded by the SGI Virtu product line.
Architecture
Consistent with other SGI platforms, the Tezro incorporates a non-blocking crossbar interconnect that links all subsystems and is architecturally based on SGI's Origin 3000 design.
The system boots using ARCS firmware, aligning with other SGI machines from the same period.
Processors
Configurations of the Tezro include dual or quad 64-bit MIPS R16000 CPUs.
Processor options for the R16000 included:
| L2 Cache: | Dual (MHz): | Quad (MHz): |
|---|---|---|
| 4 MB | 700; 800 | 700; 800 |
| 8 MB | 700; 800 | 700; 800 |
| 16 MB | 1000 | 1000 |
Node boards compatible with Onyx/Origin 350/3900 systems can be utilized, as they share identical RAM standards. For example, a quad-R16K/700 MHz (8 MB L2 cache) board extracted from a CX-Brick is supported in a Tezro chassis; other boards up to quad-1 GHz also maintain compatibility.
Memory
The Tezro came equipped with 512 MB of DDR SDRAM, expandable through proprietary DIMM modules. The tower variant accommodates up to 8 GB of RAM, whereas the rack-mounted model supports 8 GB per brick, with scalability achieved by interlinking up to eight bricks via a NUMAlink Router.
Graphics
Graphics options for the Tezro include the VPro V10 and V12 cards. Desktop versions support dual-channel configurations capable of driving two displays at resolutions up to 1920x1200 each. Rack-mounted models provide dual-head, dual-channel setups enabling up to four simultaneous displays at the same resolution.
Audio
Analog audio output is standard on tower units. Rack-mountable systems offer enhanced audio functionality through PCI expansion cards, featuring 2-channel 24-bit AES outputs alongside 8-channel ADAT interfaces.
Expansion
The count and speed of available 64-bit PCI slots vary depending on CPU quantity and system form factor:
- Tower models (with 2 or 4 CPUs): seven slots running at either 133 or 100 MHz
- Tower models (single CPU): three slots at 133 or 100 MHz
- 4U rackmount units: six slots at 100 MHz plus two slots at 66 MHz
- 2U rackmount units: two slots at 100 MHz plus one slot at 66 MHz
All PCI slots operate on a 3.3V standard. External connectivity includes one U160 SCSI interface and optional support for FireWire expansion cards.