HTC Selects SiRFstarIII for Use in First Navigation PDA Phone

Advancing its multiplatform relationship with the world's leading provider of Microsoft(R) Windows Mobile(R) devices, SiRF Technology Holdings, Inc. (Nasdaq: SIRF), a leading provider of GPS-enabled silicon and premium software location platforms, today disclosed that its high-sensitivity SiRFstarIII(TM) is being used in HTC's first GPS-enabled PDA Phone.

Available under the HTC brand as well as in customized versions for operator partners, the HTC P3300 features a single-chip SiRF GSC3 GPS receiver along with SiRF's exclusive SiRFInstantFix(TM) service.

HTC is one of the fastest growing companies in the converged mobile device market, and as they launch their own brand-name product line, HTC is utilizing SiRF's industry-leading GPS technology to deliver high-performance location awareness and navigation capabilities. SiRFstarIII's extremely high sensitivity, combined with SiRF's sophisticated navigation algorithms provides the HTC P3300 with best-in-class GPS signal acquisition, making real-time navigation practical even through urban canyons and under dense foliage. SiRFInstantFix enables the HTC P3300 to achieve the first fix in as little as eight seconds after it is turned on. With SiRFInstantFix, the HTC P3300 can not only start tracking satellites and navigating more quickly, it can do it using much weaker signals, removing the barrier that often stands in the way of successfully navigating under marginal conditions.

"For years, HTC has been quietly building innovative PDA Phones and Smartphones for major OEMs and the world's leading carriers," said Kanwar Chadha, founder and vice president of marketing for SiRF. "We are extremely pleased that our chipset is being used by HTC."

The HTC P3300 quad-band GSM navigation smartphone combines SiRFstarIII- powered GPS location capabilities with Microsoft(R) Windows Mobile(R) 5.0. It includes pocket versions of Outlook e-mail, calendar and contacts, Word, Excel, PowerPoint, Internet Explorer and Windows Media Player 10, and even includes an FM stereo radio. Wireless connectivity is provided through GPRS, WiFi and Bluetooth. The HTC P3300 delivers all this in a compact package that measures 108 mm x 58 mm x 16.8 mm, weighing just 130 grams.

"Because of SiRF's emphasis on innovation and its strong position within the GPS market, the SiRFstarIII technology was an ideal choice for HTC," said Fred Liu, chief operating officer at HTC. "The HTC P3300 packs abundant functionality into a compact form factor, and the SiRFstarIII provides consumers with world-class navigation capabilities."

Winner of the PC Magazine's 2005 award for Technical Excellence, the SiRFstarIII can track more than 20 GPS satellites, employs the equivalent of more than 200,000 correlators and sophisticated navigation algorithms, and is able to acquire signals down to -159 dBm, making real-time navigation practical in almost any environment. The GCS3 combines a complete GPS digital baseband processor, RF front end and stacked flash in a single, compact, 7-mm x 10-mm package to deliver unmatched time to first fix (TTFF) at the low signal levels.

About SiRF Technology Holdings, Inc.

SiRF Technology Holdings, Inc. develops and markets semiconductor and software products that are designed to enable location-awareness utilizing GPS and other location technologies, enhanced by wireless connectivity capabilities such as Bluetooth, for 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 location servers, asset tracking devices and fleet management systems. SiRF markets and sells its products in three target platforms: wireless handheld devices, such as mobile phones; automotive electronics systems, including navigation and telematics systems; and consumer and compute devices, including personal digital assistants, notebook computers, recreational GPS handhelds, mobile gaming machines, digital cameras and watches. Founded in 1995, SiRF is headquartered in San Jose, Calif., and has sales offices, design centers and research facilities 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.

Forward-Looking Statements

Except for the historical information contained herein, the matters set forth in this press release, including, but not limited to, statements regarding the anticipated features, benefits and capabilities of the SiRFstarIII single-chip GSC3 GPS receiver, such as its unmatched time-to- first-fix at low signal levels, ability to track more than 20 GPS satellites, utilization of more than 200,000 correlators and navigation algorithms, ability to acquire signals down to -159 dBm, extremely high sensitivity and best-in-class GPS signal acquisition, and the anticipated benefits of the SiRFInstantFix(TM) service, such as its ability to achieve the first fix in as little as eight seconds, and the anticipated features, benefits and capabilities of HTC's P3300 personal mobile navigator or P3300 quad-band GSM navigation smartphone are forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995. Words such as "to," "being," "possible," "may," " "addresses," "designed to," "provide," "believe," and similar expressions are intended to identify forward-looking statements. These statements are not guarantees of future performance and should not be considered as an indication of future performance. SiRF's actual results could differ materially from those discussed in these forward- looking statements as a result of risks and uncertainties, including, among others, demand and market acceptance for our products and those of our customers, the market for GPS-based location awareness, risks associated with the semiconductor industry and other risks and uncertainties discussed in the Company's Quarterly Report on Form 10-Q for the quarter ended June 30, 2006 and from time to time in SiRF's SEC reports. These forward-looking statements speak only as of the date hereof. We do not undertake any obligation to update forward-looking statements.