Clarksfield (microprocessor)

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Clarksfield
ProducedFrom 2009 to 2012
Designed byIntel
Max. CPU clock rate1.60 GHz to 2.00 (turbo up to 3.2) GHz
Min. feature size45 nm
Instruction setx86, x86-64, MMX, SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2
MicroarchitectureNehalem
CPUID code106Ex
Product code80607
Cores4
L2 cache4x256kb
L3 cache6 to 8 MB
Socket(s)
ApplicationMobile
Brand name(s)

Clarksfield is the code name for an Intel processor, initially sold as mobile Intel Core i7.[1] It is closely related to the desktop Lynnfield processor, both use quad-core dies based on the 45 nm Nehalem microarchitecture and have integrated PCI Express and DMI links.

The predecessor of Clarksfield, Penryn-QC was a multi-chip module with two dual-core Penryn dies based on Penryn microarchitecture, a shrink of Core microarchitecture. The name of the direct successor of Clarksfield has not been announced. Arrandale is a later mobile processor but opens a new line of mid-range dual-core processors with integrated graphics.

At the time of its release at the Intel Developer Forum on September 23, 2009, Clarksfield processors were significantly faster than any other laptop processor,[2] including the Core 2 Extreme QX9300. The initial laptop manufacturers shipping products based on Clarksfield processors include MSI, Dell/Alienware, Hewlett-Packard, Toshiba and Asustek.[3]

Brand names[edit]

As of September 2009, all Clarksfield processors are marketed as Core i7, in three product lines differing in thermal design power and the amount of third-level cache that is enabled. See the respective lists for details about each model.

Brand Name Model (list) L3 Cache size Thermal Design Power
Intel Core i7 i7-7xxQM 6 MB 45 W
i7-8xxQM 8 MB
i7-9xxXM Extreme Edition 55 W

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