Intel® Core™2 Quad Processors

Introducing Intel® Core™2 Quad processor for notebook and desktop PCs, designed to handle massive compute and visualization workloads enabled by powerful multi-core technology. Optimized for the longest possible battery life without compromise to performance, Intel Core 2 Quad processors for notebooks allow you to stay unwired longer while running the most compute-intensive applications.

http://www.intel.com/products/processor/core2quad/index.htm

Intel® Core™2 Extreme Processor

Extreme exhilaration. Extreme enjoyment.

Whether it's gaming, digital photography, or video editing, today's high-impact entertainment demands breakthrough technology. Now with a new version based on Intel's cutting edge 45nm technology utilizing hafnium-infused circuitry to deliver even greater performance and power efficiency. http://www.intel.com/products/processor/core2xe/index.htm

Intel® Centrino® 2 with vPro™ Technology

Keep your workforce more secure, managed, and mobile. With security and manageability built right onto the chip, Intel® Centrino® 2 with vPro™ technology provides hardware-assisted remote isolation, diagnostics, and repair, so you can manage your mobile workforce remotely, even if the system's OS is unresponsive.¹ And with exceptional dual-core performance, 5X better wireless performanceΩ and the longest possible battery life.²

http://www.intel.com/products/centrino2/vpro/index.htm?iid=notebook_body+centrino2vpro

Intel® Core™2 Quad Processors

Introducing Intel® Core™2 Quad processor for notebook and desktop PCs, designed to handle massive compute and visualization workloads enabled by powerful multi-core technology. Optimized for the longest possible battery life without compromise to performance, Intel Core 2 Quad processors for notebooks allow you to stay unwired longer while running the most compute-intensive applications.

http://www.intel.com/products/processor/core2quad/index.htm

Intel® Core™2 Quad processors with Intel® G45 Express Chipset

The Intel® G45 Express Chipset, when combined with the Intel® Core™2 processor family, delivers new technologies and innovative capabilities for digital home consumers with major advancements in video, graphics, responsiveness and scalability.

http://www.intel.com/performance/desktop/dighome/index.htm?iid=perf_desktop+dh_logo

Intel® Pentium® Dual-Core Processor

Intel's newest addition to the Intel® Pentium® processor family with dual-core processor technology that delivers great desktop and mobile performance, low power enhancements, and multitasking for everyday computing.http://www.intel.com/products/processor/pentium_dual-core/index.htm

Core 2 Extreme vs. Core 2 Duo

Previously Intel had differentiated its "Extreme" line of processors by giving them larger caches, a faster FSB, Hyper Threading support, and/or higher clock speeds. With the Core 2 processor family, the Extreme version gets a higher clock speed (2.93GHz vs. 2.66GHz) and this time around it also gets an unlocked multiplier. Intel officially describes this feature as the following:

Core 2 Extreme is not truly "unlocked". Officially (per the BIOS Writers Guide), it is "a frequency limited processor with additional support for ratio overrides higher than the maximum Intel-tested bus-to-core ratio." Currently, that max tested ratio is 11:1 (aka 2.93G @ 1066 FSB). The min ratio is 6:1. However, do note that the Core 2 Extreme will boot at 2.93G unlike prior generation XE processors which booted to the lowest possible ratio and had to be "cranked up" to the performance ratio.http://www.anandtech.com/cpuchipsets/showdoc.aspx?i=2795