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Produced 2009
Designed by Intel
Max. CPU clock rate 2.66 GHz to 2.93 GHz
Min. feature size 45 nm
Instruction set x86, x86-64, MMX, SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2
Microarchitecture Intel Nehalem
CPUID code 106Ex
Product code 80605
Cores 4
L2 cache 4x256kb
L3 cache 8 MB
Application Desktop
Socket(s) LGA 1156
Brand name(s) Core i5-7xx
Core i7-8xx

Lynnfield is the code name for a quad-core processor from Intel released in September 2009.[1] It is sold in varying configurations as Core i5-7xx, Core i7-8xx or Xeon X34xx. Lynnfield uses the Nehalem microarchitecture and replaces the earlier Core microarchitecture based Yorkfield processor, using the same 45 nm process technology, but a new memory and bus interface. The product code for Lynnfield is 80605, its CPUID value identifies it as family 6, model 30 (0106Ex).

Lynnfield is related to the earlier Bloomfield and Gainestown microprocessors, which are used in server and high-end desktop systems. The main difference between the two is Lynnfield's use of the LGA 1156 processor socket as opposed to the LGA 1366 used in the others. LGA 1156 processors include Direct Media Interface and PCI Express links, which Intel has previously connected to the processor with a dedicated northbridge chip, called the memory controller hub or I/O hub.

The mobile version of Lynnfield is Clarksfield.

Brand names

Brand name Model (list) Market Clock frequency range HT ECC RAM / Max RAM
Core i5 i5-7xx Performance Desktop 2.66 GHz No No / 16GB
i5-7xxS 2.40 GHz
Core i7  i7-8xx 2.80-2.93 GHz Yes
i7-8xxS 2.53 GHz
Xeon 34xx UP Server 186-2.93 GHz some Yes / 32 GB

See also


  1. ^ Anand Lal Shimpi,,  


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