SiRF Technology Puts the ‘Locate’ in Microsoft’s New Streets & Trips 2005 With GPS Locator

Microsoft’s First GPS Device Combines Best-Selling GPS Technology from SiRF With New-Generation Mapping and Trip-Planning Software

SAN JOSE, Calif., Aug. 31 – SiRF Technology Holdings, Inc. (NASDAQ:SIRF) , a leading provider of GPS-enabled silicon and software location platforms, today announced that its top-selling global positioning system (GPS) technology provides the underlying location capability for Microsoft’s first-ever GPS hardware device. The GPS Locator is combined with the latest version of Microsoft Streets & Trips 2005, the popular travel and mapping software for the United States and Canada. SiRF’s SiRFstarIIe/LP GPS chipset provides accurate and reliable information on location, speed and heading, making it easier than ever for consumers to hit the road with real-time GPS support.

“Microsoft’s decision to include a GPS receiver with its software is evidence that demand for GPS functionality is in the mainstream,” according to Kanwar Chadha, founder and vice president of marketing for SiRF Technology. “By combining leading technologies in a reasonably-priced package, a market leader like Microsoft can bring the benefits of location to a much wider consumer base.”

“GPS-based location is adding a new dimension to many of our customers’ lives. SiRF’s market-leading GPS technology allows drivers to extend Streets & Trips 2005 from a route-planning tool into a real-time driving assistant,” according to Danielle Damasius, product manager at Microsoft. “SiRF’s GPS technology makes many of the features possible because it delivers accurate location, allowing drivers to see exactly where they are at all times.”

As the industry standard for GPS performance, SiRFstarIIe/LP is optimized for devices such as the GPS receiver included in Microsoft’s Streets & Trips 2005 with GPS Locator. SiRF’s sophisticated positioning engine provides outstanding tracking capabilities even in tough environments such as urban canyons and under foliage canopies. With an embedded ARM7TDMI microprocessor, the SiRFstarIIe/LP frequently eliminates the need for a separate processor to run non-GPS tasks. This feature dramatically reduces costs and facilitates development of GPS-enabled consumer products such as Streets and Trips 2005 with GPS Locator. As a highly integrated and self-contained chip set, the SiRFstarIIe/LP is also well suited for use in stand-alone GPS modules and subsystems. The chip set includes SiRF’s adaptive TricklePower(TM) advanced power management technology, which reduces power consumption without compromising performance

Microsoft Streets & Trips helps travelers plan any local or long-distance trip with confidence. Customizable, comprehensive and current maps, driving directions, advanced routing options, road construction updates, and points of interest work seamlessly to reduce travel-related stress and save valuable time and money by allowing consumers to plan their trips in advance. Streets & Trips 2005 with GPS Locator includes a GPS receiver and enhanced GPS support, helping customers know exactly where they are and where they are headed while on the road.

About Microsoft

Founded in 1975, Microsoft (NASDAQ:MSFT) is the worldwide leader in software, services and solutions that help people and businesses realize their full potential.

About SiRF Technology Holdings

SiRF Technology Holdings Inc. develops and markets semiconductor and software products that are designed to enable location-awareness utilizing GPS and other location technologies in high-volume mobile consumer devices and commercial applications. SiRF’s technology has been integrated into mobile consumer devices, such as automobile navigation systems, mobile phones, PDAs, GPS-based peripherals and handheld GPS navigation devices, and into commercial applications, such as asset tracking devices and fleet management systems. SiRF markets and sells its products in four target platforms: automotive, consumer electronics, mobile computing and wireless devices. Founded in 1995, SiRF is headquartered in San Jose, Calif., and has sales offices around the world. The company trades on the Nasdaq Stock Exchange under the symbol SIRF. Additional information about SiRF and its location technology solutions can be found at http://www.sirf.com/ .

“Safe Harbor” Statement under the Private Securities Litigation Reform Act of 1995. A number of the matters and subject areas discussed in this press release that is not historical or current facts deal with potential future circumstances and developments. Such matters and subject areas include, in particular, expectations regarding the feasibility of and timing for, the development of solutions for the A-GPS issues, and the impact of these issues on past and future shipments of the identified SiRF products, and consequently, on our revenues or profits derived from the sale of such products. The discussion of such matters and subject areas is qualified by the inherent risks and uncertainties surrounding future expectations generally, and also may materially differ from SiRF’s actual future experience involving any one or more of such matters and subject areas. SiRF has attempted to identify, in context, certain of the factors that it currently believes may cause actual future experience and results to differ from SiRF’s current expectations regarding the relevant matter or subject area. Such risks and uncertainties include the risks that are described in the Company’s Quarterly Report on Form 10-Q for the quarter ended June 30, 2004 and in its other filings with the SEC, which are on file with the SEC and available at the SEC’s website at http://www.sec.gov/ . This press release speaks only as of its date, and SiRF disclaims any duty to update the information herein.

NOTE: SiRF Technology and the SiRF logo are registered trademarks of SiRF Technology, Inc. SiRFstarIIe/LP is a trademark of SiRF Technology, Inc. Microsoft, Windows Mobile are either registered trademarks or trademarks of Microsoft Corp. in the United States and/or other countries. Other trademarks are property of their respective companies.

CONTACT: Lori Evans of Evans Public Relations, Inc., +1-650-595-8776, or mobile, +1-650-759-1265, or lori@evanspartners.com

Web site: http://www.sirf.com/