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The Pentium is a discontinued series of x86 architecture-compatible produced by from 1993 to 2023. The original Pentium was Intel's fifth generation processor, succeeding the i486; Pentium was Intel's flagship processor line for over a decade until the introduction of the line in 2006. Pentium-branded processors released from 2009 onwards were considered mid-range budget products positioned above the entry-level and series, but below the faster Core lineup and workstation/server series.

The later Pentiums, which have little more than their name in common with earlier Pentiums, were based on both the architecture used in Atom and that of Core processors. In the case of Atom architectures, Pentiums were the highest performance implementations of the architecture. Pentium processors with Core architectures prior to 2017 were distinguished from the faster, higher-end i-series processors by lower and disabling some features, such as , and sometimes L3 . In 2017, the Pentium brand was split up into two separate lines using the Pentium name: Pentium Silver, aiming for low-power devices using the Atom and Celeron architectures; and Pentium Gold, aiming for entry-level desktop and using existing architectures such as or .

In September 2022, Intel announced that the Pentium and Celeron brands were to be replaced with the new "Intel Processor" branding for low-end processors from 2023 onwards.


Overview
During development, Intel generally identifies processors with , such as Prescott, Willamette, Coppermine, Katmai, Klamath, or Deschutes. These usually become widely known, even after the processors are given official names on launch.

The original Pentium-branded CPUs were expected to be named 586 or i586, to follow the naming convention of prior generations (286, i386, i486). However, as the firm wanted to prevent their competitors from branding their processors with similar names (as AMD had done with their Am486), Intel filed a application on the name in the United States, but was denied because a series of numbers was considered to lack trademark distinctiveness. Instead, they would name their processors as "Pentium" rather than using numbers, which wanted to trademark that generation processor.Intel Corporation, "NewsBits: Intel Unveils Name Of Fifth-Generation Processor", Microcomputer Solutions, November/December 1992, page 1

Following Intel's prior series of 8086, 80186, 80286, 80386, and 80486 microprocessors, the firm's first P5-based processor was released as the original Intel Pentium on March 22, 1993. Marketing firm Lexicon Branding was hired to coin a name for the new processor. The suffix -ium was chosen as it could connote a fundamental ingredient of a computer, like a , while the prefix could refer to the fifth generation of x86.

Due to its success, the Pentium brand would continue through several generations of high-end processors. In 2006, the name briefly disappeared from Intel's technology roadmaps, only to re-emerge in 2007.

In 1998, Intel introduced the brand for low-priced processors. With the 2006 introduction of the brand as the company's new flagship line of processors, the Pentium series was to be discontinued. However, due to a demand for mid-range dual-core processors, the Pentium brand was repurposed to be Intel's mid-range processor series, between the Celeron and Core series, continuing with the Pentium Dual-Core line.

In 2009, the "Dual-Core" suffix was dropped, and new x86 processors started carrying the plain Pentium name again.

In 2014, Intel released the Pentium 20th Anniversary Edition, to mark the 20th anniversary of the Pentium brand. These processors are unlocked and highly overclockable. From 2015 onwards, the "20th Anniversary Edition" wordmark was dropped from the name, branding it simply as the Pentium.

In 2017, Intel split the Pentium branding into two line-ups. Pentium Silver targets low-power devices and shares architecture with Atom and Celeron, while Pentium Gold targets entry-level desktops and uses existing architecture, such as and .

In September 2022, Intel announced that the Pentium and Celeron brands were to be replaced with the new "Intel Processor" branding for low-end processors in laptops from 2023 onwards. This applied to desktops using Pentium and Celeron processors as well, and both brands were discontinued in 2023 in favor of "Intel Processor" branded processors.

+Intel Pentium processor family
Merom-2M (65 nm)
Arrandale (32 nm)
Braswell; Goldmont
Goldmont Plus (Gemini Lake)
Comet Lake (14 nm)


Pentium-branded processors

P5 microarchitecture based
The original Intel P5 or Pentium and processors were the follow-on to the 80486 processor and were marketed from 1993 to 1999. Some versions of these were available as Pentium OverDrive that would fit into older .


Pentium
March 1993
October 1994
June 1995
January 1997
August 1997


P6 microarchitecture based
In parallel with the P5 microarchitecture, Intel developed the P6 microarchitecture and started marketing it as the for the high-end market in 1995. It introduced out-of-order execution and an integrated second-level on dual-chip processor package. The second P6 generation replaced the original P5 with the and rebranded the high-end version as Pentium II Xeon. It was followed by a third version named the and Pentium III Xeon respectively. The Pentium II line added the MMX instructions that were also present in the Pentium MMX.

Versions of these processors for the laptop market were initially named Mobile Pentium II and Mobile Pentium III, later versions were named Pentium III-M. Starting with the Pentium II, the brand was used for low-end versions of most Pentium processors with a reduced feature set such as a smaller cache or missing power management features.


Pentium Pro
November 1995


Pentium II
May 1997
January 1998
April 1998
January 1999


Pentium III
February 1999
October 1999
July 2001


NetBurst microarchitecture based
In 2000, Intel introduced a new microarchitecture named , with a much longer pipeline enabling higher clock frequencies than the P6-based processors. Initially, these were named Pentium 4, and the high-end versions have since been named simply . As with Pentium III, there are both Mobile Pentium 4 and Pentium 4 M processors for the laptop market, with Pentium 4 M denoting the more power-efficient versions. Enthusiast versions of the Pentium 4 with the highest were named Pentium 4 Extreme Edition.

The was the first Pentium, integrating two Pentium 4 chips in one package and was available as the enthusiast Pentium Extreme Edition.


Pentium 4
Willamette180 nm1.3–2.0 GHz256 KB400 MT/sSocket 423, Socket 478November 2000
Northwood130 nm1.6–3.4 GHz512 KB400 MT/s–800 MT/sSocket 478January 2002
November 2003
1 MB533 MT/s–800 MT/sSocket 478, LGA 775February 2004
February 2005
January 2006


Pentium D
May 2005
May 2005
January 2006
January 2006


Pentium M microarchitecture based
In 2003, Intel introduced a new processor based on the P6 microarchitecture named , which was much more power-efficient than the Mobile Pentium 4, Pentium 4 M, and Pentium III M. Dual-core versions of the Pentium M were developed under the code name Yonah and sold under the marketing names and Pentium Dual-Core. Unlike Pentium D, it integrated both cores on one chip. From this point, the brand name was used for the mainstream Intel processors, and the Pentium brand became a low-end version between Celeron and Core. All Pentium M based designs including Yonah are for the mobile market.


Pentium M
March 2003
June 2004


Pentium Dual-Core
January 2007


Core microarchitecture based
The Pentium Dual-Core name continued to be used when the Yonah design was extended with 64-bit support, now named the Core microarchitecture. This eventually replaced all NetBurst-based processors across the four brands Celeron, Pentium, Core, and Xeon. Pentium Dual-Core processors based on the Core microarchitecture use the Allendale and Wolfdale-3M designs for desktop processors and Merom-2M for mobile processors.


Pentium Dual-Core
Q4 2007
June 2007
August 2008


Pentium (2009)
May 2009
January 2009
September 2009
May 2009

2 MB
E6xxx
10 W

In 2009, Intel changed the naming system for Pentium processors, renaming the Wolfdale-3M based processors to Pentium, without the Dual-Core name, and introduced new single- and dual-core processors based on Penryn under the Pentium name.

The Penryn core is the successor to the Merom core and Intel's 45 nm version of their mobile series of Pentium processors. The FSB frequency is increased from 667 MHz to 800 MHz, and the voltage is lowered. Intel released the first Penryn Core, the Pentium T4200, in December 2008. In June 2009, Intel released the first single-core processor to use the Pentium name, a Consumer Ultra-Low Voltage (CULV) Penryn core named Pentium SU2700.

In September 2009, Intel introduced the Pentium SU4000 series together with the Celeron SU2000 and Core 2 Duo SU7000 series, which are dual-core CULV processors based on Penryn-3M and using 800 MHz FSB. The Pentium SU4000 series has 2 MB L2 cache but is otherwise basically identical to the other two lines.


Nehalem microarchitecture based
The Nehalem microarchitecture was introduced in late 2008 as a successor to the Core microarchitecture, and in early 2010, a new Pentium G6950 processor based on the Clarkdale design was introduced based on the Westmere refresh of Nehalem, which were followed by the mobile P6xxx based on Arrandale a few months later.

January 2010
Q2 2010

18 W

On January 7, 2010, Intel launched a new Pentium model using the Clarkdale chip in parallel with other desktop and mobile CPUs based on their new Westmere microarchitecture. The first model in this series is the Pentium G6950. The Clarkdale chip is also used in the Core i3-5xx and Core i5-6xx series and features a 32 nm process (as it is based on the Westmere microarchitecture), integrated memory controller and 45 nm graphics controller and a third-level cache. In the Pentium series, some features of Clarkdale are disabled, including AES-NI, (versus Core i3), and the graphics controller in the Pentium runs at 533 MHz, while in the Core i3 i3-5xx series they run at 733 MHz, and Dual Video Decode that enables Blu-ray picture-in picture hardware acceleration, and support for Deep Color and . The memory controller in the Pentium supports DDR3-1066 max, the same as the Core i3 i3-5xx series. The L3 cache is also 1 MB less than in the Core i3-5xx series.


Sandy Bridge microarchitecture based
The microarchitecture was released in the Pentium line on May 22, 2011.
  • aAll models share the following details: 2 cores, 2 logical processors (4 on Pentium 3xx with ), CPUID signature 206A7, family 6 (06h), model 42 (02Ah), stepping 7 (07h)
  • bTranslation lookaside buffer (TLB) and 64-byte prefetching; data TLB0 2-MB or 4-MB pages, , 32 entries; data TLB 4-KB pages, 4-way set associative, 64 entries; instruction TLB 4-KB pages, 4-way set associative, 128 entries, L2 TLB 1-MB, 4-way set associative, 64-byte line size; shared 2nd-level TLB 4 KB pages, 4-way set associative, 512 entries.
  • cAll models feature: on-chip floating-point unit, Enhanced Intel Technology (EIST), Intel 64, XD bit (an implementation), , Smart Cache.
  • dAll models support: MMX, SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2
  • e (Sandy Bridge) contain 6 and HD Graphics 2000, but does not support these technologies: Intel Quick Sync Video, InTru 3D, Clear Video HD, Wireless Display, 3D Video, or 3D graphics acceleration.

Integrated
Integrated
Integrated GPUe
65 W
3 MB,
12-way set associative,
64 byte line size
ECC, AVX, TXT, , AES-NI


Ivy Bridge microarchitecture based
Currently, there exist Ivy Bridge models G2010, G2020, G2120, G2030, and G2130. All are dual-core and have no hyper-threading or Turbo Boost. They were the last processors that were made by Intel under the Pentium brand to fully support and .

w/o hyper-threading


Haswell microarchitecture based
Several Haswell-based Pentium processors were released in 2013, among them the G3258 "Anniversary Edition", first released in 2014 by Intel to commemorate the 20th anniversary of the line. As with prior-generation Pentium processors, Haswell and Haswell Refresh-based parts have two cores only, lack support for hyper-threading, and use the LGA1150 socket form factor.


Broadwell microarchitecture based
Broadwell-based Pentiums were launched in Q1 2015 using a 14 nm process (e.g. the dual-core 1.9 GHz Intel Pentium 3805U with 2 MB cache). They used the FCBGA1168 socket.


Skylake microarchitecture based
Skylake-based Pentium processors support up to 64 GB RAM. Features like , Intel , are not available. Supports and .

Integrated graphics are provided by Intel HD Graphics 510, utilizing a maximum of 1.7 GB of memory, for resolutions up to 4096×2304 @ 60 Hz using supporting up to 3 displays.

Skylake-based Pentium processors are the last Intel processors made under the Pentium brand on which Windows earlier than Windows 10 are officially supported by , although enthusiast-created are available that disabled the check and allowed Windows 8.1 and earlier to continue to receive on this and later platforms.


Kaby Lake microarchitecture based
In Q1 2017 Intel released the -based Pentium G4560; it is the first Pentium-branded CPU since the -based Pentium 4 to support , a feature available in some " Core"-branded products. Features include a clock speed of 3.5 GHz with four threads, 3 MB of L3 cache and Intel HD 610 integrated graphics.


Coffee Lake microarchitecture based
All Coffee Lake Pentium processors support , and integrated Intel UHD Graphics.


Comet Lake microarchitecture based
The family (a refinement of Skylake on 14 nm) reached Pentium first in mobile with the Pentium Gold 6405U in late 2019, and then on desktop in Q2 2020 with Pentium Gold G64xx/G65xx/G66xx for LGA 1200, followed by a small refresh (G64x5/G65x5) in early 2021.

All Comet Lake Pentium Gold processors support and integrated Intel UHD Graphics.

Q2 2020 (refresh Q1 2021)
Q4 2019

As above; minor frequency refresh
Low-power T variants; integrated GPU; DDR4-2666


Pentium-compatible Intel processors
Due to its prominence, the term "Pentium-compatible" is often used to describe any x86 processor that supports the IA-32 instruction set and architecture. Even though they do not use the Pentium name, Intel also manufactures other processors based on the Pentium series for other markets. Most of these processors share the core design with one of the Pentium processor lines, usually differing in the amount of , power efficiency or other features. The notable exception is the Atom line, which is an independent design.
  • , a low-end version
  • , the mainstream version including Core 2, Core i3, Core i5, Core i7 and Core i9, now placed above Pentium
  • , a high-end version used in servers and workstations
  • A100 (discontinued), an ultra-mobile version of Pentium M, succeeded by
  • EP80579, a system-on-a-chip based on Pentium M
  • , a high-end version used in servers and workstations
  • , a now-discontinued, low-power reimplementation of the Pentium architecture for use as microcontroller and in other embedded applications


See also
  • List of Intel Pentium processors
  • Pentium FDIV bug, a well-publicized flaw in the original processor
  • Performance Rating, informally termed Pentium Rating
  • "It's All About the Pentiums", a song by "Weird Al" Yankovic
  • , AMD's line of processors that competed with Pentium

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