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MIPS TECHNOLOGIES ANNOUNCES R4400 64-BIT MICROPROCESSOR; WORLD'S FIRST PC PROCESSOR RATED AT OVER 100 SPECMARKS

 MIPS TECHNOLOGIES ANNOUNCES R4400 64-BIT MICROPROCESSOR;
 WORLD'S FIRST PC PROCESSOR RATED AT OVER 100 SPECMARKS
 MOUNTAIN VIEW, Calif., Nov. 2 /PRNewswire/ -- MIPS Technologies Inc. today announced the 150 MHz MIPS(R) R4400(TM) 64-bit microprocessor, the world's first processor over 100 SPECmarks designed for PCs as well as workstations, servers and embedded control applications. The R4400 uniquely blends leading-edge CPU performance with the critical ability to build affordable desktop systems. The new MIPS RISC processor is the only front-running RISC processor supplied by multiple commercial sources.
 "The MIPS R4400 will allow system manufacturers to deliver stunning RISC performance at PC prices," said Robert C. Miller, president and chief executive officer of MIPS Technologies. "Desktop applications increasingly demand this kind of power to run state-of-the-art operating systems, such as Microsoft Windows NT(TM) and UNIX(R). The R4400 processor delivers proven performance today for users who require affordable power for their computing needs." The R4400 allows high-performance, low-cost system designs optimized for the personal computer marketplace and is expected to substantially exceed the performance of the PC industry's next-generation CISC microprocessor.
 "This is a significant event for the Windows NT marketplace," said Paul Maritz, senior vice president at Microsoft Corp. "Our support of the MIPS RISC architecture is an important element of Microsoft's Windows NT strategy. This announcement shows that MIPS Technologies continues to deliver the level of performance necessary for next generation applications."
 The R4400 chip combines strong performance in both integer and floating-point calculations with flexible cache memory configurations, making it competitive across a wide range of real applications, both commercial and technical. Simulation of an R4400 delivers 95 SPECint89 (integer performance), 126 SPECfp89 (floating-point performance) and 113 SPECmarks overall.
 The R4400 microprocessor is a pin-compatible upgrade to the MIPS R4000(TM) and is available in three versions: the R4400PC, the R4400SC and the R4400MC. All three versions contain 32 kilobytes of on-chip primary cache, and include design enhancements for graphics applications. The R4400PC, in the lower cost 179-pin PGA (pin grid array) package, is targeted at affordable desktop computers and embedded control applications. For highest performance, up to 4 megabytes of external secondary cache can be directly connected to the R4400SC. Such large caches accelerate real-world applications used in the most demanding technical and commercial environments. The R4400MC contains additional features to enable a range of multiprocessor configurations used in high-performance compute and network servers.
 The R4400 processor operates internally at twice the clock speed of the external input clock, and is available in clock speeds of 75 MHz external/150 MHz internal, 67/134 MHz and 50/100 MHz, in both 3.3V and 5V operating voltages.
 The R4400 is the latest addition to the MIPS Technologies line of compatible RISC microprocessors. Its predecessors, the MIPS R2000(TM), R3000(R), R6000(TM) and R4000, have been shipped in more than 300,000 embedded, desktop, deskside and server products. Since its introduction in October 1991, the R4000 processor family has delivered leading applications performance, ranking as the highest performance single-chip microprocessor for desktop systems.
 MIPS Technologies Inc. designs and supplies the world's most advanced RISC processor technology. The company tests, certifies and licenses its processor technology, supplying components to the embedded control and computer system markets. MIPS RISC architecture components are available from Integrated Device Technology Inc., LSI Logic Corp., NEC Electronics Inc., Performance Semiconductor Corp., Siemens Components Inc. and Toshiba Corp. MIPS Technologies Inc. is a wholly owned subsidiary of Silicon Graphics Inc. (NYSE: SGI) and is headquartered in Mountain View.
 -0- 11/02/92
 /CONTACT: Carl Furry, 415-390-3365, or Marilyn Lattin, 415-390-5070, both of Silicon Graphics/
 (SGI) CO: MIPS Technologies Inc.; Silicon Graphics Inc. ST: California IN: CPR SU: PDT


SG-TM -- SJ002 -- 1475 11/02/92 10:08 EST
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Date:Nov 2, 1992
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