SPARCstation 20 Series

Designed with your success in mind.
The SPARCstation(tm) 20 Series was engineered to live up to your company's potential. With performance that begins where other systems peak, these networked desktops can keep pace with even the fastest-growing enterprise. In fact, they can help you set the pace. Because every SPARCstation 20 can easily expand to faster processors and up to four-way multiprocessing, you are getting better performance than any other desktop system. Better compute performance. Better graphics performance. Better networking performance.

Whether you're in engineering or education, manufacturing or finance, science or business, the SPARCstation 20 system will run your applications better. That's because the innovative SPARCstation 20 features an exceptionally well-balanced design. Building on the strengths of the SPARCstation 10, the world's most successful networked desktop, our engineers added faster system bus technologies to the SPARCstation 20 Series. The result: These systems not only deliver higher single-processor performance (at very attractive prices) but also provide the ideal platform for desktop multiprocessing.

And that's just the beginning. Cutting-edge 24-bit graphics, imaging, and multimedia technologies are fully integrated into the system. As are fast disks, high system memory capacity, and a full complement of expansion slots so you can easily add even more graphics, video, multimedia, and advanced networking capabilities.

Multiprocessing means unparalleled performance
When you're ready for an entirely new level of performance, so is the SPARCstation 20. The modular design makes it simple and economical to add disk, memory, even processors. By adding CPUs, you can dramatically increase performance--at half the cost of competitive systems.

Of course, simply adding another CPU is not enough to deliver a truly efficient multiprocessing system. For peak *system* performance, all components--cache, memory, disk, networking--must keep pace. And that's where the SPARCstation 20 system outshines every other desktop.

In addition to providing the ideal hardware platform for multiprocessing, the SPARCstation 20 comes bundled with Solaris(R), the leading 32-bit UNIX(R) solution. Specially designed for multiprocessing, Solaris enhances the UNIX operating system's inherent multitasking capability. What's more, it delivers the highest networking performance in the industry.

Better graphics, imaging, and video
The first line of desktops to include accelerated 24-bit true-color image processing, 3-D graphics, and video decompression as standard features, the SPARCstation 20 Series delivers real-time video playback and enables you to pan, zoom, rotate, convolve, and do color conversion at high speeds. Thanks to our revolutionary SX technology, you get up to 100 times the imaging performance of other high-end desktops, making the SPARCstation 20 unbeatable for GIS, medical imaging, and color prepress applications. These desktops are perfect for designing in interactive 3-D with Gouraud shading and Z buffering. And they excel as an 8-bit 1280 by 1024 windowing platform.

The SPARCstation 20TurboGX(tm) is ideal for 2-D and 3-D wireframe drafting, electronic design automation, or financial applications. If you want even faster graphics, plus higher resolution and hardware double buffering, choose the SPARCstation 20TurboGXplus(tm).

For extremely demanding applications such as high-end mechanical design, contour mapping, or animation, the SPARCstation 20ZX system includes 3-D solids functionality and gives you the fastest, most interactive and realistic graphics available.

The advanced multimedia technologies you'll find integrated into the SPARCstation 20 enable people to work together as never before, using applications such as electronic mail that combines text, audio, and video. And the SPARCstation 20M system brings real-time video conferencing to the desktop. Because sometimes success depends not only on what you bring to the table, but also who.


• Two 50-MHz MBus slots
Make it easy to upgrade to faster CPUs and to multiprocessing
• Four 25-MHz SBus slots
Provide maximum expandability for advanced graphics, multimedia, and other options
• Integrated SX graphics
Supports 24-bit color imaging and 2-D and 3-D graphics
• I/O expansion ports
Serial, parallel, and fast SCSI ports let you add more mass storage and options
• Built-in networking
Twisted-pair Ethernet and AUI Ethernet (requires optional adapter cable) make it easy to connect with the entire enterprise
• 50- or 60-MHz Superscalar SPARC processor or processors
Highly integrated design incorporates new MMU with 65,536 contexts
• Advanced multimedia capabilities
Integrated CD-quality audio, SX graphics for real-time 24-bit video playback and imaging, and optional internal CD-ROM
• Solaris(R) 2.3 multitasking operating system
Provides standard support for NFS(R), ONC(tm), TCP/IP, SunNet(tm), OSI, and MHS networking

SPARCstation 20 Series Specifications

Model 50:

1 processor, SPECint_92 69.2, SPECfp_92 78.3, SPECrate_int92 1628, SPECrate_fp92 1842, on-chip cache 36 KB, SuperCache n/a

Model 51:

1 processor, SPECint_92 73.6, SPECfp_92 84.8, SPECrate_int92 1731, SPECrate_fp92 1995, on-chip cache 36 KB, SuperCache 1 MB

Model 61:

1 processor, SPECint_92 88.9, SPECfp_92 102.8, SPECrate_int92 2092, SPECrate_fp92 2418, on-chip cache 36 KB, SuperCache 1 MB

Model 502MP:

2 processors, SPECint_92 n/a, SPECfp_92 n/a, SPECrate_int92 2833, SPECrate_fp92 2995, on-chip cache 36 KB, SuperCache n/a

Model 612MP:

2 processors, SPECint_92 n/a, SPECfp_92 n/a, SPECrate_int92 3903, SPECrate_fp92 4645, on-chip cache 36 KB per CPU, SuperCache 1 MB per CPU

Model 514MP:

4 processors, SPECint_92 n/a, SPECfp_92 n/a, SPECrate_int92 6034, SPECrate_fp92 6752, on-chip cache 36 KB per CPU, SuperCache 1 MB per CPU


Architecture: Superscalar SPARC(R) Version 8

Memory management: SPARC reference MMU with 65,536 contexts

Cache: 16-KB data and 20-KB instruction on chip; 1-MB external option

CPU interface: Two 64-bit MBus slots for multiprocessing

Main Memory

16-, 32-, and 64-MB SIMM expansion

128 MB maximum (with 16-MB SIMMs)

256 MB maximum (with 32-MB SIMMs)

512 MB maximum (with 64-MB SIMMs)

Standard Interfaces

Ethernet: 10-Mb/sec twisted-pair standard (10-BaseT); AUI available with optional adapter cable

SCSI: 10-MB/sec SCSI-2 (synchronous)

Serial: Two RS-232C/RS423 serial ports

Parallel: Centronics-compatible parallel port (cable required)

Audio: 16-bit audio, 8 to 48 kHz; internal speaker and external microphone

SBus: Four expansion slots; 32-bit data bus width

Mass Storage and Media

Internal floppy disk: Optional 3.5-in. MS-DOS(R)/IBM(R) compatible (720 KB, 1.2 MB, 1.44 MB formatted)

Internal CD: Optional 644-MB SunCD(tm) 2Plus, double-speed, Photo CD(tm) compatible

Internal disk: Up to two 3.5-in. disks (535 MB or 1.05 GB formatted)

External desktop storage: Disk--535 MB, 1.05 GB; 2.1 GB disk pack; 4.2GB or 8.4GB multidisk pack; 31.5 GB SPARCstorage(tm) Array Tape--150-MB .25-in QIC-150; 5 GB 8mm, 5 GB 4mm DAT; 20 GB 4mm DAT auto-loader

Graphics, Imaging, and Video

SPARCstation 20 (SX): Accelerated 24-bit 2-D/3-D graphics and imaging, high-speed convolution, rotation, panning, zooming, color conversion, 24-bit copy double buffering, 24-bit Z-buffering, Gouraud shading, 1280 x 1024 resolution

SPARCstation 20TurboGX: 8-bit, 2-D/3-D wireframe, 1152 x 900 resolution

SPARCstation 20TurboGXplus: 8-bit 2-D/3-D wireframe, 1152 x 900 or 1280 x 1024 resolution, hardware double buffering

SPARCstation 20ZX: High-performance 3-D graphics, 24-bit double buffer, 24-bit Z-buffer, transparency, Gouraud shading, nonuniform rational b-splines, antialiasing, depth cueing, stereo-ready, 1280 x 1024 resolution

SPARCstation 20M: Color camera, SunVideo(tm) real-time video capture and compression, SX graphics

Monitor Options

17-in. color: 1152 x 900 resolution, 76 or 66-Hz refresh rate, 100 dots per inch; 1280 x 1024 resolution, 76- or 66-Hz refresh rate, 110 dots per inch

20-in. color: 1152 x 900 resolution, 76- or 66-Hz refresh rate, 84 dots per inch; 1280 x 1024 resolution, 76- or 66-Hz refresh rate, 93 dots per inch (SX, TurboGXplus, ZX); 960 x 680 resolution, 112-Hz refresh rate, 70 dots per inch (ZX stereo)

20-in. grayscale: 1152x900 resolution, 76-Hz refresh rate, 84 dots per inch; 1280 x 1024 resolution, 76-Hz refresh rate, 93 dots per inch

Input Devices

Keyboard: Sun Type 5; AT 101 or UNIX layout available; more than 18 international keyboards available

Mouse: Optical, 3-button

Microphone: SunMicrophone(tm) II

Color camera: Optional SunVideo(tm) and SunCamera


Operating system: Solaris operating environment

Windowing system: OpenWindows(tm) Version 3

Languages: C, C++, Pascal, FORTRAN, FORTRAN MP

Networking: ONC, NFS(R), TCP/IP, SunNet(tm) OSI, MHS

Graphics: SunVision(tm), SunPHIGS(tm), XGL(tm), XIL(tm), SunGKS(tm), Xlib, PostScript(R)


AC power: 100-240 VAC, 47-63 Hz, 0.4 K VA

Operating: 0o C to 40o C (32o F to 104o F), 5% to 95% relative humidity, noncondensing

Nonoperating: -40o C to 75o C (-40o F to 167o F), 5% to 95% relative humidity, noncondensing

Operating acoustic noise: 5.4 bels (at 28o C)

Idle acoustic noise: 5.2 bels (at 28o C)

Declared noise emissions in accordance with ISO 9296


Meets or exceeds the following requirements

Safety: UL 1950, CSA 950, TUV EN 60950

RFI/EMI: FCC Class B, DOC Class B, VDE Class B, VCCI Class 2

X-ray: DHHS 21, Subchapter J; PTB German X-ray Decree

Dimensions and Weights

SPARCstation 20 chassis
Height: 7.7 cm (3.1 in.)
Width: 41.7 cm (16.4 in.)
epth: 40.9 cm (16.1 in.)
Shipping weight: 12.7 kg (27.0 lb.)

17-in. color monitor
Height: 41.4 cm (16.4 in.)
Width: 40.6 cm (16.0 in.)
Depth: 45.0 cm (17.7 in.)
Shipping weight: 25.9 kg (57.0 lb.)

20-in. color monitor
Height: 47.1 cm (18.5 in.)
Width: 47.5 cm (18.7 in.)
Depth: 49.5 cm (19.5 in.)
Shipping weight: 36.5 kg (80.3 lb.)

20-in. grayscale monitor
Height: 44.5 cm (17.5 in.)
Width: 46.0 cm (18.1 in.)
Depth: 38.7 cm (15.2 in.)
Shipping weight: 26.2 kg (57.7 lb.)


Upgrades are available for the SPARCstation 5, SPARCstation 10, SPARCstation LX, SPARCstation IPX(tm), SPARCstation 2, SPARCstation 1+, SPARCstation 1, and Sun-3(tm) systems.