Yorkfield is the code name for some Intel processors sold as Core 2 Quad and Xeon

Xeon

The Xeon is a brand of multiprocessing- or multi-socket-capable x86 microprocessors from Intel Corporation targeted at the non-consumer server, workstation and embedded system markets.-Overview:...

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In Intel's Tick-Tock

Intel Tick-Tock

"Tick-Tock" is a model, of Jones Farm 5 and adopted by chip manufacturer Intel Corporation since 2007 to follow every microarchitectural change with shrinking of the process technology. Every "tick" is a shrinking of process technology of the previous microarchitecture and every "tock" is a new...

 cycle, the 2007/2008 "Tick" was Penryn microarchitecture, the shrink of the Core microarchitecture to 45 nanometers as CPUID model 23, replacing Kentsfield

Kentsfield (microprocessor)

Kentsfield is the code name of the first Intel desktop quad core CPU branded Core 2 , released on November 2, 2006. The top-of-the-line Kentsfields were Core 2 Extreme models numbered QX6xx0, while the mainstream ones branded Core 2 Quad were numbered Q6xx0. All of them featured two 4 MB L2...

, the previous model.

Like its predecessor, Yorkfield Multi-chip module

Multi-Chip Module

A multi-chip module is a specialized electronic package where multiple integrated circuits , semiconductor dies or other discrete components are packaged onto a unifying substrate, facilitating their use as a single component...

s come in two sizes. The smaller version is equipped with 6MB L2 cache, and is commonly called Yorkfield-6M. The larger version is equipped with 12 MB L2 cache.

The mobile version of Yorkfield is Penryn-QC

Penryn (microprocessor)

Penryn is the code name of a processor from Intel that is sold in varying configurations as Core 2 Solo, Core 2 Duo, Core 2 Quad, Pentium and Celeron....

 and the dual-socket server version is Harpertown. The MP server Dunnington chip is a more distant relative based on a different chip but using the same 45 nm Core microarchitecture. The Wolfdale

Wolfdale (microprocessor)

Wolfdale is the code name for a processor from Intel that is sold in varying configurations as Core 2 Duo, Celeron, Pentium and Xeon. In Intel's Tick-Tock cycle, the 2007/2008 "Tick" was Penryn microarchitecture, the shrink of the Core microarchitecture to 45 nanometers as CPUID model 23...

 desktop processor is a dual-core version of Yorkfield.

The successor to Yorkfield is Nehalem based Lynnfield

Lynnfield (microprocessor)

Lynnfield is the code name for a quad-core processor from Intel released in September 2009. 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 Penryn based Yorkfield processor, using the same 45 nm...

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Variants

Processor	Brand Name	Model (list)	Cores	L2 Cache	Socket	TDP
Yorkfield	Xeon Xeon The Xeon is a brand of multiprocessing- or multi-socket-capable x86 microprocessors from Intel Corporation targeted at the non-consumer server, workstation and embedded system markets.-Overview:...	X33x0	4	2×3–2×6 MB	LGA 775	65–95 W
Yorkfield-CL		X33x3			LGA 771 LGA 771 LGA 771, also known as Socket J, is a CPU interface introduced by Intel in 2006. It is used in Intel Core microarchitecture based DP-capable server processors, the Dual-Core Xeon is codenamed Dempsey, Woodcrest, and Wolfdale and the Quad-Core processors Clovertown, Harpertown...	80 W
Yorkfield-6M	Core 2 Intel Core 2 Core 2 is a brand encompassing a range of Intel's consumer 64-bit x86-64 single-, dual-, and quad-core microprocessors based on the Core microarchitecture. The single- and dual-core models are single-die, whereas the quad-core models comprise two dies, each containing two cores, packaged in a...  Quad	Q8xxx		2×2 MB	LGA 775	65–95 W
		Q9x0x		2×3 MB
Yorkfield		Q9x5x		2×6 MB
Yorkfield XE	Core 2 Extreme	QX9xxx		2×6 MB		130–136 W
		QX9xx5			LGA 771	150 W

Yorkfield

Yorkfield (codename for the Core 2 Quad Q9x5x series and Xeon

Xeon

The Xeon is a brand of multiprocessing- or multi-socket-capable x86 microprocessors from Intel Corporation targeted at the non-consumer server, workstation and embedded system markets.-Overview:...

 X33x0 series) features a dual-die quad core design with two unified 6 MB L2 caches; their product code is 80569. They also feature 1333 MT/s FSB

Front side bus

A front-side bus is a computer communication interface often used in computers during the 1990s and 2000s.It typically carries data between the central processing unit and a memory controller hub, known as the northbridge....

 and are compatible with the Bearlake chipset. These processors were released in late March 2008 beginning with the Q9300 and Q9450.
Yorkfield CPUs were expected to be released in January 2008. The release of Yorkfield, however, was delayed to March 15, 2008. Initially this delay was attributed to an error found in the Yorkfield chip, but later reports claimed that the delay was necessary in order to ensure compatibility with the 4-layer printed circuit board

Printed circuit board

A printed circuit board, or PCB, is used to mechanically support and electrically connect electronic components using conductive pathways, tracks or signal traces etched from copper sheets laminated onto a non-conductive substrate. It is also referred to as printed wiring board or etched wiring...

s utilized by many mainstream motherboards. At the Intel Developer Forum 2007, a Yorkfield processor was compared with a Kentsfield processor.

Yorkfield-6M

Yorkfield-6M (product code 80580) are similar to Yorkfield but are made from two Wolfdale-3M like cores, so they have a total of 6 MB of L2 cache, with 3 MB shared by two cores. They are used in Core 2 Quad Q8xxx with 4 MB cache enabled and Core 2 Quad Q9xxx and Xeon X3320/X3330 processors with all of the 6 MB enabled. Q8xxx processors initially had no support for Intel VT unlike Q9xxx, but later versions all have VT enabled.

Yorkfield XE

On November 11, 2007, Intel released the first Yorkfield XE processor, Core 2 Extreme QX9650. It is the first Intel desktop processor to use 45 nm technology and high-k metal gates. Yorkfield features a dual-die quad core design with two unified level-two (L2) caches of 6 MB each. It also features a 1333 MT/s FSB and clock rate of 3 GHz. The processor incorporates SSE4.1

SSE4

SSE4 is a CPU instruction set used in the Intel Core microarchitecture and AMD K10 . It was announced on 27 September 2006 at the Fall 2006 Intel Developer Forum, with vague details in a white paper; more precise details of 47 instructions became available at the Spring 2007 Intel Developer Forum...

 instructions and has total of 820 million transistors on 2x107 mm² dies.
QX9650 and QX9770 both are labeled as product code 80569 like Yorkfield, while QX9775, being made for Dual Socket 771 mainboards, uses product code 80574 like the Xeon X5482 "Harpertown" that it is closely related to.

Yorkfield CL

The OEM-only Xeon X33x3 processors with 80 W TDP and product code 80584 are made for Socket 771 like Harpertown but are only supported in single-socket configurations. Like the dual-core Wolfdale-CL processor, these will not work in regular Socket 775 mainboards but are typically used in blade servers that otherwise require DP server processors like Wolfdale-DP or Harpertown.

See also

• Core (microarchitecture)
• Kentsfield (microprocessor)
  Kentsfield (microprocessor)
  Kentsfield is the code name of the first Intel desktop quad core CPU branded Core 2 , released on November 2, 2006. The top-of-the-line Kentsfields were Core 2 Extreme models numbered QX6xx0, while the mainstream ones branded Core 2 Quad were numbered Q6xx0. All of them featured two 4 MB L2...
  
  
• Wolfdale (microprocessor)
  Wolfdale (microprocessor)
  Wolfdale is the code name for a processor from Intel that is sold in varying configurations as Core 2 Duo, Celeron, Pentium and Xeon. In Intel's Tick-Tock cycle, the 2007/2008 "Tick" was Penryn microarchitecture, the shrink of the Core microarchitecture to 45 nanometers as CPUID model 23...
  
  
• Penryn (microprocessor)#Penryn-QC
• Harpertown (microprocessor)
• Lynnfield (microprocessor)
  Lynnfield (microprocessor)
  Lynnfield is the code name for a quad-core processor from Intel released in September 2009. 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 Penryn based Yorkfield processor, using the same 45 nm...
  
  
• Bloomfield (microprocessor)
  Bloomfield (microprocessor)
  Bloomfield is the code name for Intel high-end desktop processors sold as Core i7-9xx and single-processor servers sold as Xeon 35xx., in almost identical configurations, replacing the earlier Yorkfield processors. The Bloomfield core is closely related to the dual-processor Gainestown, which has...
  
  
• Celeron
  Celeron
  Celeron is a brand name given by Intel Corp. to a number of different x86 computer microprocessor models targeted at budget personal computers....
  
  
• Pentium Dual-Core
• Intel Core 2
  Intel Core 2
  Core 2 is a brand encompassing a range of Intel's consumer 64-bit x86-64 single-, dual-, and quad-core microprocessors based on the Core microarchitecture. The single- and dual-core models are single-die, whereas the quad-core models comprise two dies, each containing two cores, packaged in a...