Intel unveiled its new Core 2 Duo processor lineup on Thursday, increasing the pressure on rival Advanced Micro Devices (AMD). The 10 new dual-core chips promise markedly better performance and greater energy efficiency than Intel\u2019s existing products.The Core 2 Duo launch has been billed as Intel\u2019s most significant since the introduction of the original Pentium processor in 1993. The introduction comes at a crucial moment. Intel executives have watched AMD expand its share of the processor market in recent quarters, and they want to reclaim this lost ground."We\u2019re really bullish on Core 2 Duo, and we believe that it\u2019s going to enable us to grow a significant amount of [market] share over the second half of the year. That\u2019s our goal," said Tim Bailey, director of platform marketing at Intel Asia-Pacific.Among the chips announced by Intel are five processors designed for laptops and five desktop chips, including the high-end Core 2 Extreme processor for gamers. Pricing for the desktop chips ranges from US$183 for the 1.86GHz Core 2 Duo E6300 to $999 for the 2.93GHz Core 2 Extreme X6800. Pricing of the mobile chips was not available.Core 2 Duo and Core 2 Extreme are based on Intel\u2019s Core microarchitecture, which replaces the NetBurst architecture used in the Pentium 4. The same microarchitecture is used in Woodcrest, the latest version of the Xeon server processor announced last month.PC vendors say Core 2 Duo, formerly called Conroe and Merom, offers excellent performance for its price, allowing them to reach new markets.Hewlett-Packard (HP) will use the Core 2 Duo chip in its new xw4400 workstation, replacing the Intel Pentium 4 and Pentium D chips used in the xw4300 model. HP sells that line primarily to users running compute-intensive applications like mechanical computer-aided design and digital content creation.Core 2 Duo runs at slower clock speeds than Pentium-era chips, but is still more productive because it handles more calculations per clock cycle, said Sean Tucker, a product manager at HP. Thanks to that slower speed, Core 2 Duo chips need less electricity, drawing just 65 watts compared to the Pentium 4\u2019s 95 watts and Pentium D\u2019s 130 watts.\u201cThat\u2019s good news for customers because it draws less power from the wall, which helps to create a cooler working environment because it doesn\u2019t dissipate so much heat, and a quieter environment because we can run the fan slower and generate less acoustical output,\u201d Tucker said.While Intel has begun shipping desktop Core 2 Duo chips to computer makers, most systems won\u2019t reach consumers until next week. The first Core 2 Duo desktops will reach users in early August, with Core 2 Duo laptops arriving by the end of the month, Intel said, noting that Core 2 Extreme systems are already available.The Core 2 Duo chips are made using a 65-nanometer production process, one of the reasons they consume 40 percent less power and offer a 40 percent or greater increase in performance, based on Intel\u2019s estimates. The number used to describe the production process refers to the size of the smallest feature that can be created on a chip.Intel began using the 65-nanometer process last year, starting the move away from the less-advanced 90-nanometer process. Shifting to a more advanced process generally permits the production of chips that are smaller, run faster and consume less power. The more advanced process also reduces the per-unit cost of chips, since more can fit on a single silicon wafer.With the introduction of the Core 2 Duo, Intel now produces more 60-nanometer chips than 90-nanometer chips, the company said. That will help Intel put pressure on AMD, which still produces most of its chips using a 90-nanometer process.-Sumner Lemon and Ben Ames, IDG News Service (Beijing Bureau)Related Link:\n\nAMD Cuts Prices; Processor War Heats UpCheck out our CIO News Alerts and Tech Informer pages for more updated news coverage.