ClearSpeed Achieves First-Pass Success on Industry's Fastest-Ever Accelerator Chip Using Verisity's VPA Solutions

Fully-functional CS301 Running at Target Clockspeed on First Tapeout; Company Credits Verisity's VPA Solutions as Key Part of Success

MOUNTAIN VIEW, Calif. – November 17, 2003 – Verisity Ltd. (Nasdaq:VRST) and ClearSpeed Technology today announced that ClearSpeed has achieved first-pass silicon success on the development of the CS301 high-performance, low-power floating-point processor using Verisity's Verification Process Automation (VPA) solutions. The CS301 is the world's highest floating point performance chip, achieving upwards of 25 Gigaflop performance, or 25 billion floating point operations a second. ClearSpeed verified the chip using Verisity’s VPA solutions specifically targeted for the verification specialist, including the Specman Elite® technology.

The fully programmable CS301 multi-threaded array processor includes 64-way parallel processing, running at the target clock speed of 200MHz while consuming fewer than two watts, a fraction of the traditional power requirements. ClearSpeed will demonstrate working silicon of the CS301 this week at the SC 2003 conference in Phoenix, Arizona.

"Meeting ever increasing market demands by delivering first-pass working silicon quickly, and cost effectively, was a tough goal. Even with a breakthrough architecture, delivering a world-leading parallel processor like the CS301 was incredibly challenging, it took the best people, approaches and tools," said Russell David, vice president of engineering at ClearSpeed Technology. "To verify the device, we chose Verisity and it has turned out to be a great choice. We had application code running within days of receiving first silicon, something we would not have achieved without the power and ease-of-use of Verisity's VPA solutions, and the high quality of support that Verisity provides."

Verisity's VPA solutions simplify the complex process of verification through a combination of automation technology, methodology and analyses. Verisity automates the verification process that starts with executable specs and verification plans to the realization of 'total coverage' of hardware and software functionality and verification closure. Verisity's Specman Elite provides an environment for all aspects of verification, including automatic generation of functional tests, data and assertion checking and functional coverage analysis.

"The CS301 has the potential to bring supercomputer performance to the desktop," said Sean Redmond, vice president and general manager of European Operations for Verisity. "Verisity and ClearSpeed partnered closely for the verification success of this breakthrough design and the fact that ClearSpeed was able to turn out fully functional, working silicon the first time is a clear testament to the capability of Verisity's VPA solutions. We congratulate ClearSpeed on the successful delivery of the CS301 and look forward to working with them on future generations of the microprocessor."

About ClearSpeed
ClearSpeed Technology is a semiconductor company focused on delivering high performance, low power, parallel processing solutions for the computing and communications industries. ClearSpeed's advanced multi-threaded array processor technology provides its customers with the ability to significantly accelerate data intensive applications at extremely low power. Privately funded, ClearSpeed has offices in the USA and UK and already has over 40 patents granted and in process.

About Verisity
Verisity, Ltd. (NASDAQ: VRST), is the leading supplier of process automation solutions for the functional verification market. The company addresses customers' critical business issues with its market-leading software and intellectual property (IP) that effectively and efficiently verify the design of electronic systems and complex integrated circuits for the communications, computing, and consumer electronics global markets. Verisity's VPA solutions enable projects to move from executable verification plans to module, unit, and chip/system level 'total coverage' and verification closure, while maximizing productivity, product quality, and predictability of schedules. The company's strong market presence is driven by its proven technology, methodology and solid strategic partnerships and programs. Verisity's customer list includes leading companies in all strategic technology sectors. Verisity is a global organization with offices throughout Asia, Europe, and North America. Verisity's principal executive offices are located in Mountain View, California, with its principal research and development offices located in Rosh Ha'ain, Israel. For more information, visit www.verisity.com.

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