PMC-Sierra Receives Highest Score for RM5261A 64-Bit MIPS RISC Processor

3/31/2004 - Based on benchmark results from the Embedded Microprocessor Benchmark Consortium (EEMBC®), PMC-Sierra, Inc. (Nasdaq:PMCS - News) announced that the RM5261A(TM) has received the highest out-of-the-box scores ever recorded for a MIPS-based(TM) embedded microprocessor without L2 cache. EEMBC Certification Labs (ECL) tested the RM5261A 64-bit MIPS-based processor at 400 MHz using benchmark suites that measure the expected device performance in networking and office automation systems.

"For the past decade, PMC-Sierra has steadily proven our ability to meet the high performance, low-power, and cost-sensitive requirements of our networking and printer customers by delivering the RM5200(TM) and RM7000(TM) families of processors," said Tom Riordan, vice president and general manager of PMC-Sierra's Microprocessor Products Division. "The results of the EEMBC certification tests on our RM5261A 64-bit MIPS-based microprocessor demonstrate the efficiency of our products as well as the strength and capabilities of the MIPS® architecture in embedded applications such as networking and printing."

The five-stage pipeline RM5261A microprocessor demonstrated the highest performance and lowest power for any microprocessor in its class. The RM5261A achieved a score of 6.8 Netmarks(TM) while running the EEMBC Networking benchmark tests, which measure processor performance in OSPF/Dijkstra, Route Look-up Patricia, and Packet Flow tests. The RM5261A achieved a score of 328.3 OAmarks(TM) while running the Office Automation benchmark tests including dithering, image rotation, and text processing. The open-source GNU Compiler Collection (GCC) version 3.3-MIPS64Linux-030509 was used for all tests, which demonstrates typical performance results rather than selecting different compiler optimizations for each specific application. The detailed network and office automation benchmark scores as well as other reports for the RM5261A are now available from EEMBC at

Webinar on Effective Microprocessor Benchmarking
PMC-Sierra will be hosting a webinar on Effective Microprocessor Benchmarking on Wednesday, April 28, 2004, from 11:00 a.m. to 12:00 p.m. Pacific Time. Topics of discussion will include an introduction to current microprocessor benchmarking standards, strengths and limitations of Dhrystone versus EEMBC benchmarking, and a case study showing how to select the best microprocessor for an embedded application using EEMBC certified benchmarking results.

About PMC-Sierra's RM5200 Family
PMC-Sierra's 64-bit MIPS-based processors power a broad range of communications applications from network router control planes and enterprise switches to enterprise printers and advanced consumer electronics devices. The RM5200 class processors are ideal in multiple applications such as in IP-based Layer 3 switches, edge and core routers, laser printers, digital video recorders (DVRs), high-definition televisions (HDTVs), and set-top boxes (STB). They are also used in emerging applications such as storage, multi-service access platforms, DSLAMs, RAIDs, and automotive telematics. For more information, visit www.pmc-sierra/processors.

EEMBC, the Embedded Microprocessor Benchmark Consortium, develops and certifies real-world benchmarks and benchmark scores to help designers select the right embedded processors for their systems. Every processor submitted for EEMBC benchmarking is tested for parameters representing different workloads and capabilities in communications, networking, consumer, office automation, automotive/industrial, embedded Java, and microcontroller-related applications. With members including leading semiconductor, intellectual property, and compiler companies, EEMBC establishes benchmark standards and provides certified benchmarking results through the EEMBC Certification Labs (ECL) in Texas and California.

About PMC-Sierra
PMC-Sierra(TM) is a leading provider of high-speed broadband communications and storage semiconductors and MIPS-based processors for Enterprise, Access, Metro Optical Transport, Storage Area Networking and Wireless network equipment. The company offers worldwide technical and sales support, including a network of offices throughout North America, Europe and Asia. The company is publicly traded on the NASDAQ Stock Market under the PMCS symbol and is included in the S&P 500 Index which consists of 500 stocks chosen for market size, liquidity, and industry group representation. For more information, visit

RM5200, RM5261A, RM700C, PMC-Sierra, PMC, PMCS and "Thinking you can build on" are trademarks of PMC-Sierra, Inc.

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