new Intel Core

Produced: From 2006
Manufacturer: Intel
Max CPU clock: 1.06 GHz to 3.20 GHz
FSB speeds: 0533 MT/s to 1600 MT/s
Process:
(MOSFET channel length) 0.065 µm to 0.045 µm
Instruction set: x86, MMX, SSE, SSE2, SSE3, SSSE3, x86-64, SSE4 (SSE4 is for only Penryn-based processors)
Microarchitecture: Intel Core microarchitecture
Cores: 1, 2, or 4 (2x2)
Sockets:
Socket T (LGA 775)
Socket M (µPGA 478)
Socket P (uPGA 478)
Micro-FCBGA (uBGA 479)

Core name: Allendale, Conroe, Merom-2M, Merom, Kentsfield, Wolfdale, Yorkfield, Penryn


The Core 2 brand refers to a range of Intel's consumer 64-bit dual-core and MCM quad-core CPUs with the x86-64 instruction set, and based on the Intel Core microarchitecture, which derived from the 32-bit dual-core Yonah laptop processor. (Note: The Yonah had two interconnected cores, similar to those branded Pentium M, but comprising a single silicon chip or die.) The 2x2 MCM dual-die quad-core[1] CPU had two separate dual-core dies (CPUs) - next to each other - in one quad-core MCM package. The Core 2 relegated the Pentium brand to a lower-end market, and reunified the laptop and desktop CPU lines that had been divided into the Pentium 4, D, and M brands.

The Core microarchitecture returned to lower clock speeds and improved processors' usage of both available clock cycles and power compared with preceding NetBurst of the Pentium 4/D-branded CPUs[2]. It provides more efficient decoding stages, execution units, caches, and buses, reducing the power consumption of Core 2-branded CPUs, while increasing their processing capacity.

The Core 2 brand was introduced on July 27, 2006[3] comprising the Solo (single-core), Duo (dual-core), Quad (quad-core), and Extreme (dual- or quad-core CPUs for enthusiasts) branches, during 2007[4].

Duo, Quad, and Extreme :
The Core 2-branded CPUs include: "Conroe" and "Allendale" (dual-core for higher- and lower-end desktops), "Merom" (dual-core for laptops), "Kentsfield" (quad-core for desktops), and their variants named "Penryn" (dual-core for laptops), "Wolfdale" (dual-core for desktops) and "Yorkfield" (quad-core for desktops). (Note: For the server and workstation "Woodcrest", "Clovertown", and "Tigerton" CPUs see the Xeon brand[5].)

The Core 2 branded processors featured the Virtualization Technology (except T52x0, T5300, T54x0, T5500 with stepping "B2", E2xx0, E4x00 and E8190 models), Execute Disable Bit, and SSE3. Their Core microarchitecture introduced also SSSE3, Trusted Execution Technology, Enhanced SpeedStep, and Active Management Technology (iAMT2). With a Thermal Design Power (TDP) of up to only 65 W, the Core 2 dual-core Conroe consumed only half the power of less capable, but also dual-core Pentium D-branded desktop chips[6] with a TDP of up to 130 W[7] (a high TDP requires additional cooling that can be noisy or expensive).

Typical for CPUs, the Core 2 Duo E4000/E6000, Core 2 Quad Q6600, Core 2 Extreme dual-core X6800, and quad-core QX6700 and QX6800 CPUs were affected by minor bugs.[8]
for detail click on this link : http://en.wikipedia.org/wiki/Intel_Core_2