Richardson, Texas ?October 14, 1997 ?Cyrix Corporation (NASDAQ: CYRX) today revealed the internal architecture of its next processor core, code named Cayenne, at Microprocessor Forum ?7. Cayenne will feature a fully pipelined, dual-issue floating point unit and 15 new multimedia floating point instructions to enable the highest-performance 3D graphics, DVD and 3D audio.

"Future applications will require a no-compromise compute engine with balanced integer, floating point and multimedia capability," said Robert Maher, vice president of engineering, Cyrix. "The Cayenne core will deliver industry-leading 3D and multimedia performance for mainstream desktop PCs."

Boost in Floating Point and MMX Instruction Performance
A key component of the Cayenne core is the ability to execute four floating point operations per cycle using dual MMX instruction units. This will deliver over 1 GFLOP peak performance, a first for desktop PCs. In addition, the dual floating point reciprocal and reciprocal-square-root instructions will execute five times faster on Cayenne than on the Pentium™ II processor. These instructions are used extensively in lighting calculations for 3D image processing.

The net result is that Cayenne will deliver in excess of 10 million meshed triangles per second to an external 3D rendering engine ?more than five times faster than the Pentium II processor. Lastly, Cayenne will deliver single-cycle throughput on standard x86 floating point instructions.

Cayenne Core Summary
The Cayenne core will feature a dual-issue floating point and MMX instruction unit, 64KByte L1 cache, and an enhanced sixth-generation integer unit. Processors based on the core will initially be manufactured using a .25-micron, 5-layer metal process. This includes a C4 process for flip chip assembly. As a result, the core die size is expected to be about 65mm². Processors based on this core are expected to be in production in 2H98 at speed ratings ranging from PR300 to PR400.

About Cyrix Corporation
Cyrix Corporation, (NASDAQ: CYRIX) headquartered in Richardson, Texas, is a leading supplier of innovative microprocessor-based solutions that set new standards for the personal computer market. The company delivers compelling value and quality to its customers, the manufacturers of personal computer products, by combining industry leading design with world class manufacturing. Cyrix抯 customers include, Apple, Compaq, CTX, Cybermax, FIC, Fujitsu, Hyundai, IBM, Trigem and Tulip. For more information visit Cyrix抯 web site at www.cyrix.com.

Any forward-looking statements in the above release involve risks and uncertainties which could cause actual results to differ from the present anticipated results. These risks and uncertainties include but are not limited to the following: market demand and acceptance of our microprocessor products; the impact of changing economic conditions; product introductions; the verification of our microprocessor抯 compatibility with industry-standard hardware and software; the maintenance of sufficient cash flow; reliance on third-parties; the impact of market peers and their products as well as risks concerning future technology; and others detailed in the Company抯 Securities and Exchange Commission filings. These filings can be obtained by contacting Cyrix Investor Relations. Cyrix is a registered trademark and 6x86MX is a trademark of Cyrix Corporation. Pentium is a registered trademark and MMX is a trademark of Intel Corporation. All other brand or product names are trademarks or registered trademarks of their respective holders.