Press Release

Horizon Navigation Selects RMI Alchemy Media Processor to Power NavMate-4 Software for Personal GPS Solutions

Global Leader in Navigation Software and Systems Partners with RMI to Power Forward in
Fast-Growth PND Market

CUPERTINO, Calif. and TAIPEI, Taiwan, June 4, 2008 — RMI Corporation, a leading provider of High Performance Processor Solutions for Networking, Communications and Media Rich Applications, and Horizon Navigation have announced a partnership to deliver the Horizon navigation software incorporated on the RMI Alchemy™ Au1250™ media processor for the PND (personal navigation device) market. RMI and Horizon will demonstrate the combined
technologies at Computex 2008, being held in Taipei, Taiwan, June 3 to 7.

The RMI Alchemy Au1250 Processor is in full production and offers 700 MHz performance levels that provide customers and developers with increased capabilities, including faster route calculations and map re-draw speeds for navigation devices.

“We are very pleased to be partnered with a leader such as Horizon Navigation,” said Ed White, manager, business development, Media Processor Solutions, RMI. “Their success in the full-featured navigation market, first in the auto industry, and in the last few years in the rapidly growing PND market has been driven by their innovation, vision and creativity. With this new partnership, Horizon takes full advantage of the 700 MHz performance and poweroptimization that the RMI Alchemy Au1250 processor makes available.”

Horizon Navigation is a center of expertise for worldwide GPS navigation solutions. Since 1989, the Horizon team has brought innovative and award winning navigation systems to market. Horizon's creativity has resulted in over 100 patents around the globe. The powerful multi-functional portable devices developed by Horizon customers will incorporate the RMI Alchemy Au1250™ processor, which provides a highly integrated solution delivering the most
Available MIPS in the industry.

“We are pleased to partner with RMI and extend the Alchemy Processor technology to our customer base,” said John Angerman, VP of Business Development at Horizon Navigation. “Their experience integrating with products for the auto industry and portable digital media devices has allowed the ready integration of our technologies. With Alchemy already ported to our software solutions, we are market-ready for customers who want to shorten their time to market using the high performance and power-optimization capabilities we are offering the market.”

RMI® products offer advanced processor technology in performance and integration, and are used by system and original equipment manufacturers to address the infrastructure, enterprise, and consumer markets. The company’s XLR™, XLS™ and Alchemy™ Processor families are based on an innovative MIPS-compatible architecture creating highly-integrated designs incorporating advanced internal architectures and built on leading-edge silicon
process technologies.

About Horizon Navigation
Horizon Navigation, Inc., a leader of in-vehicle navigation systems since 1989, uses the latest high-tech advancements to get you where you want to go safely, conveniently, and accurately. Horizon’s NavMate® software calculates the quickest and most efficient route to your destination. After developing the first practical in-vehicle navigation systems for Avis rental cars in 1992, Horizon went on to enable navigation solutions for Ford of Europe, Chrysler, General Motors, Nissan and Porsche. Horizon technology can be found today in products from Asus, Audiovox, Clarion, Dual, Delphi, Zenec and an ever growing list of famous brands in Europe, North America, Asia, Africa, South America and Australia. For more information, please visit www.horizonnav.com.

About RMI Corporation
RMI Corporation is a fabless semiconductor company providing highly integrated, feature-rich products ranging from power-optimized High-Performance Super System-on-a-Chip (SuperSoC™) Processor solutions for the Infrastructure, Enterprise, and Consumer Media Digital markets. Applications include Wireless, Networking Security, Thin Clients, and Connected Multi-Media. RMI offers a broad platform of advanced MIPS®-compatible processing solutions with both 32/64-bit architectures supporting frequencies from 300MHz to 1.2 GHz. RMI is headquartered in Cupertino, CA with branch and subsidiary operations in Texas, United Kingdom, India, Korea, Japan, Taiwan and China. More information about RMI can be found on the company's website at http://www.RMICorp.com.

© Copyright 2008 RMI Corporation. All rights reserved. RMI, the RMI logo, RMI Alchemy, Alchemy, Alchemy-Based, Au1200, Au1210, Au1250, Media Acceleration Engine, Media Processor Solutions, SuperSOC and the other trademarks named on the RMI website are trademarks of RMI Corporation. All other trademarks named herein are the property of their respective owners.