O2 - Desktop Workstation

The O 2 Workstation: Combining Workstation Performance with the Power of the Web

Silicon Graphics introduces O2 , the innovative desktop system that combines Silicon Graphics performance with the power of a Web-integrated user environment. O2 maximizes the productivity and innovation of creative and engineering teams with a new Web-integrated user interface combined with exceptional compute, graphics, imaging, I/O, and video compression capabilities.

New Thinking Demands a New Architecture

The O2 workstation is based on an innovative Unified Memory Architecture (UMA). Each system resource (CPU, graphics, video, imaging, compression, I/O) has equal access to the 2.1GB/second unified main memory subsystem. The compute power of O2 is based on the MIPS ® R5000 ™ and R10000 ™ processors, providing outstanding application performance.

Interactive Graphics and Imaging Performance

The O2 workstationís standard 32-bit double buffered graphics, native OpenGL ® graphics sub-system, and hardware support for texture mapping and z-buffering gives users industry-leading 3D performance and quality. O2 has a dedicated image processing engine that accelerates operations such as convolutions. The texture mapping hardware also allows real-time pan, zoom, and rotate of large, high-resolution images.

Unmatched Video Processing

Standard video compression hardware in O 2 enables every engineer to be a video editor while providing the features and quality that video professionals demand. In real time, O 2 encodes and decodes NTSC or PAL resolution motion-JPEG video and decodes MPEG 1 video. Users can also record video from the screen and save it in real time as a JPEG compressed video file. Independent audio can be synchronized to video data. O 2 supports two video channels in and one video channel out.

Web-Integrated Desktop Environment

The O 2 workstation is built network-ready, with Web browsing and TCP/IP network protocols com-pletely integrated into the desktop user interface and operating system. The file management system allows for the viewing of files, folders, or the hier-archy of a Web site while browsing it. The Silicon Graphics personal Web publisher is a standard feature, allowing users to share information over company intranets with an easy-to-use drag-and-drop interface. Each machine has simple but powerful personal system administration and disk manage-ment tools that leverage the Webís look-and-feel to help users intuitively visualize and complete tasks such as printer installation. NFS 3.0, available as an option, provides the highest throughput NFS file serving in the industry.

High-Bandwidth I/O

The O 2 I/O engine maximizes performance by removing bandwidth bottlenecks, which can starve even the fastest system components. O 2 delivers peak performance on 10BaseT/100BaseTX Ethernet networks, a dual Ultra Fast/Wide SCSI implementation, 64-bit PCI expansion bus, and other I/O options.


R5000 @ 180MHz, 32KB data/32KB instruction primary cache, 512KB secondary cache


Synchronous DRAM, 100MHz, 4 banks, 288-bit wide

Capacity 64MB with 16Mb SDRAM

Mass Storage

2 x Ultra Fast/Wide SCSI single-ended, 1 internal bus, 1 external bus (40MB/sec peak each)

2 x 1" x 3.5" internal drive bays (only 1 available on R10000 processor models)

Internal 4X CD-ROM

Hard drives: 4GB (7,200 RPM)

Networking Hardware

10BaseT/100BaseTX Ethernet standard (RJ-45)

PCI networking FDDI (dual-attach fiber, single-attach options fiber, or unshielded twisted pair)

10BaseT/100BaseTX Ethernet

ISDN basic rate interface (S/T connector)

Synchronous serial 2 x T1/E1


Serial HIPPI**

Fibre Channel**


One half-length, 64-bit PCI slot (10W)

Optional digital display adapter card for Silicon Graphics ®

Presenter 1280 and Indy Presenter

Additional SCSI channel available via PCI

Input Devices

PC (PS/2 ) compatible keyboard and mouse


Analog stereo input/output

Powered speaker output

Monaural speaker


O2 Video I/O*

2 input channels and 1 output channel

S-Video and composite video I/O (S-Video with I 2 C control)

Digital camera

CCIR601 digital video**


20" (19" viewable) Trinitron ® 1280x1024

17" (16" viewable) Trinitron 1280x1024

Connectors and Controls

Front Volume control (up/down)


Status LED

Reset switch

Power on

Rear 2 serial 460kbps (DB-9)

Monitor (HD15) PC style

Ultra Fast/Wide SCSI (H-den 68)

10BaseT/100BaseTX Ethernet (RJ45)

1284 parallel (C miniature)

Mouse/keyboard (2 x MDIN6)

Side Right and left audio line in/out (RCA)

Stereo headphone jack (3.5mm)

Microphone jack (3.5mm)

S-Video I/O (MDIN)*

Composite video I/O (RCA)*

Rear Audio/Video

Digital video I/O and camera (68-pin)*

Right and left audio line I/O powered (2.5mm power, 3.5mm audio)


9" W x 12" H x 10.5" D

22 lbs

175-watt power supply


Resolution 1280x1024 @ 75Hz 1024x768, 800x600, 640x480 also supported

Frame Buffer Formats

32 + 32-bit FB (32 + 32 double buffered)

32-bit FB (16 + 16 double buffered)

16-bit FB (8 + 8 double buffered)

8-bit overlay

Graphics Features

Native OpenGL graphics subsystem

Hardware z-buffer

Triangle rasterization in hardware

Texture mapping in hardware

Hardware image mapping support

Hardware stencil planes

Hardware anti-aliasing

Source plus destination alpha in hardware

Fast Xline performance


Hardware accelerated ñ JPEG encode/decode 30fps @NTSC or CCIR 601 resolution 25fps @PAL or CCIR 601 resolution Software based ñ H.261 encode/decode ñ QuickTime encode/decode ñ Cinepak encode/decode ñ AVI encode/decode ñ MPEG-1 encode/decode


Operating System IRIX 6.3 with XFS

Networking TCP/IP, Novell NetWare support, Xinet AppleTalk ®

support, Windows ® networking, ONC with NFS 3.0 (optional)

Run-Time Libraries OpenGL and OpenGL Imaging Extensions

ImageVision Library ®

Digital media libraries


Floppy (parallel port), 4.0GB DAT, SyQuest ® **, 10GB or 15GB digital linear tape, 1.3GB optical disk**, ZIP, JAZ, external 3-bay enclosure


Optical mouse**, Magellan**, Spaceball**, dials and buttons, tablets**


Macintosh ® MIDI port converter

RS-422 port converter


FCC/CISPR 22 class B


EV EMC compliant


Warranty 1 year advanced parts exchange

MTBF 70,000 hours (est.)

*not present on all models

**not sold by Silicon Graphics

© 1996 Silicon Graphics, Inc. All rights reserved. Specifications subject to change without notice. Silicon Graphics, OpenGL, ImageVision Library, and the Silicon Graphics logo are registered trademarks, and O 2 , XFS and IRIX are trademarks, of Silicon Graphics, Inc. Indy is a registered trademark, and Indy Presenter is a trademark, used under license in the U.S. and owned by Silicon Graphics, Inc., in other countries worldwide. MIPS and the MIPS RISC Certified Power logo are registered trademarks, and R5000 and R10000 are trademarks, of MIPS Technologies, Inc. Ethernet is a trademark of Xerox Corporation. NFS is a trademark of Sun Microsystems, Inc. SyQuest is a registered trademark of SyQuest Technologies, Inc. Macintosh, Cinepak, AppleTalk, and QuickTime are registered trademarks of Apple Computer, Inc. PS/2 is a trademark of IBM Corporation. NetWare is a trademark of Novell, Inc. Windows is a registered trademark of Microsoft Corporation. Trinitron is a registered trademark of Sony Corporation. All other trademarks mentioned herein are the property of their respective owners. Underwater camera screen shot courtesy of Katz Design.

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