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Clarkdale is the codename for
Intel Intel Corporation is an American multinational corporation and technology company headquartered in Santa Clara, California. It is the world's largest semiconductor chip manufacturer by revenue, and is one of the developers of the x86 seri ...
's first-generation
Core i5 The following is a list of Intel Core i5 brand microprocessors. Introduced in 2009, the Core i5 line of microprocessors are intended to be used by mainstream users. Desktop processors Nehalem microarchitecture (1st generation) "Lynnf ...
, i3 and Pentium dual-core desktop processors. It is closely related to the mobile
Arrandale Arrandale is the code name for a family of mobile Intel processors, sold as mobile Intel Core i3, i5 and i7 as well as Celeron and Pentium. It is closely related to the desktop Clarkdale processor; both use dual-core dies based on the '' Westm ...
processor; both use dual-core dies based on the 32 nm Westmere microarchitecture and have integrated Graphics,
PCI Express PCI Express (Peripheral Component Interconnect Express), officially abbreviated as PCIe or PCI-e, is a high-speed serial computer expansion bus standard, designed to replace the older PCI, PCI-X and AGP bus standards. It is the common ...
and DMI links built-in. Clarkdale is the successor of the Wolfdale used in desktop
Intel Core 2 Intel Core 2 is the processor family 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-cor ...
,
Celeron Celeron is Intel's brand name for low-end IA-32 and x86-64 computer microprocessor models targeted at low-cost personal computers. Celeron processors are compatible with IA-32 software. They typically offer less performance per clock speed com ...
and
Pentium Dual-Core The Pentium Dual-Core brand was used for mainstream x86-architecture microprocessors from Intel from 2006 to 2009 when it was renamed to Pentium. The processors are based on either the 32-bit '' Yonah'' or (with quite different microarchitectu ...
processors. Unlike its predecessor, Clarkdale already contains the major north bridge components, such as memory controller, PCI Express for external graphics, integrated graphics and the DMI connector, making it possible to build more compact systems without a separate north bridge or discrete graphics like Lynnfield. The Clarkdale processor package contains two dies: the 32 nm processor die with the I/O connections, and the 45 nm graphics and integrated memory controller die. Physical separation of the processor die and memory controller die resulted in increased memory latency. The
CPUID In the x86 architecture, the CPUID instruction (identified by a CPUID opcode) is a processor supplementary instruction (its name derived from CPU IDentification) allowing software to discover details of the processor. It was introduced by Intel ...
for Clarkdale is family 6, model 37 (2065x). The mobile equivalent of Clarkdale is
Arrandale Arrandale is the code name for a family of mobile Intel processors, sold as mobile Intel Core i3, i5 and i7 as well as Celeron and Pentium. It is closely related to the desktop Clarkdale processor; both use dual-core dies based on the '' Westm ...
.


Brand names

Clarkdale processors are sold under the
Intel Core Intel Core is a line of streamlined midrange consumer, workstation and enthusiast computer central processing units (CPUs) marketed by Intel Corporation. These processors displaced the existing mid- to high-end Pentium processors at the time ...
,
Pentium Pentium is a brand used for a series of x86 architecture-compatible microprocessors produced by Intel. The original Pentium processor from which the brand took its name was first released on March 22, 1993. After that, the Pentium II and P ...
and
Celeron Celeron is Intel's brand name for low-end IA-32 and x86-64 computer microprocessor models targeted at low-cost personal computers. Celeron processors are compatible with IA-32 software. They typically offer less performance per clock speed com ...
brand names, with varying feature sets. The Core i5 versions generally have all features enabled, with the Core i5-661 and Core i5-655K models lacking
Intel VT-d x86 virtualization is the use of hardware-assisted virtualization capabilities on an x86/x86-64 CPU. In the late 1990s x86 virtualization was achieved by complex software techniques, necessary to compensate for the processor's lack of hardware-as ...
and TXT like the Core i3, which also does not support
Turbo Boost Intel Turbo Boost is Intel's trade name for central processing units (CPUs) dynamic frequency scaling feature that automatically raises certain versions of its operating frequency when demanding tasks are running, thus enabling a higher resulting ...
and AES new instructions. In addition, the Pentium and Celeron versions do not have SMT, and they can only use a reduced amount of third-level
cache Cache, caching, or caché may refer to: Places United States * Cache, Idaho, an unincorporated community * Cache, Illinois, an unincorporated community * Cache, Oklahoma, a city in Comanche County * Cache, Utah, Cache County, Utah * Cache County ...
. The Xeon L340x line has a lower clock frequency and thermal design power, and supports unbuffered
ECC memory Error correction code memory (ECC memory) is a type of computer data storage that uses an error correction code (ECC) to detect and correct n-bit data corruption which occurs in memory. ECC memory is used in most computers where data corruption c ...
in addition to the features of the Core i5-6xx, but has support for the integrated graphics disabled. Importantly, although the
memory controller The memory controller is a digital circuit that manages the flow of data going to and from the computer's main memory. A memory controller can be a separate chip or integrated into another chip, such as being placed on the same die or as an int ...
in Clarkdale processors is on-package, it is on a separate
die Die, as a verb, refers to death, the cessation of life. Die may also refer to: Games * Die, singular of dice, small throwable objects used for producing random numbers Manufacturing * Die (integrated circuit), a rectangular piece of a semicondu ...
from the CPU cores, and thus has increased latency compared to processor architectures which integrate it on-die with the main CPU cores.


See also

*
Intel Core Intel Core is a line of streamlined midrange consumer, workstation and enthusiast computer central processing units (CPUs) marketed by Intel Corporation. These processors displaced the existing mid- to high-end Pentium processors at the time ...
*
Intel Core i5 The following is a list of Intel Core i5 brand microprocessors. Introduced in 2009, the Core i5 line of microprocessors are intended to be used by mainstream users. Desktop processors Nehalem microarchitecture (1st generation) "Lynnf ...
*
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 microa ...
*
Lynnfield (microprocessor) Lynnfield is the code name for a quad-core processor from Intel released in September 2009. It was sold in varying configurations as Core i5-7xx, Core i7-8xx or Xeon X34xx. Lynnfield uses the Nehalem microarchitecture and replaces the earlier Pen ...
*
List of Macintosh models grouped by CPU type This list of Mac models grouped by CPU type contains all central processing units (CPUs) used by Apple Inc. for their Mac computers. It is grouped by processor family, processor model, and then chronologically by Mac models. Motorola 68k Motor ...


References


External links


IDF: Intel Clarkdale Up Close and Personal
{{Intel processors, nehalem Intel microprocessors