Intel Clarksfield core

The first three processor with Clarksfield core, Core I7-720QM, i7-820QM and i7-920XM, were introduced in September 2009, or two weeks after the launch of very similar desktop Lynnfield core. The core is based on Nehalem micro-architecture, and is manufactured using 45nm technology. Standard features of this core are 4 CPU cores with 1 MB L2 cache, up to 8 MB level 3 cache, and full set of technologies provided by original Nehalem micro-architecture. Clarksfield microprocessors are manufactured in micro-PGA package, compatible with socket G1 motherboards.

New core features:

• First mobile core built on Nehalem micro-architecture
• Direct Media Interface with 2.5 GT/s data rate
• Integrated graphics controller
• New socket (socket G1)

Intel microprocessors with Clarksfield core can be identified by:

• Part number: OEM part numbers start with "BY80607".
  An example: BY80607002526AE.
• CPU ID: CPU identification number for all production CPUs with Clarksfield core is 106E5. This CPUID was also used by Lynnfield-based processors.

Details of all families, utilizing Intel Clarksfield core, are provided in the table below:

	Core i7 Mobile	Core i7 Mobile Extreme Edition
Manufacturing technology	0.045 micron
Cores	4
Frequency (MHz)	1600 - 1867	2000 - 2133
Fastest processor	Core i7-840QM	Core i7-940XM
L2 cache size	1024 KB
L3 cache size	6 MB 8 MB	8 MB
Thermal Design Power (Watt)	45	55
Package	988-pin micro-FCPGA8 (rPGA988A)
Socket	Socket G1