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Encyclopedia > Pentium M
Pentium M
Central processing unit

Pentium M 730 core Dothan
Produced: From 2003 to 2007
Manufacturer: Intel
CPU Speeds: 900 MHz to 2.26 GHz
FSB Speeds: 400 MT/s to 533 MT/s
Process:
(MOSFET channel length)
0.13 µm to 0.09 µm
Instruction Set: x86
Microarchitecture: P6 variant
Sockets:
Core Names:
  • Banias
  • Dothan

The Pentium M[1] brand refers to only two single-core 32-bit x86 microprocessors (with the Intel P6 microarchitecture) introduced in March 2003 (during the heyday of the Pentium 4 desktop CPUs), and forming a part of the Intel Centrino platform. The Pentium M branded processors had a maximum power consumption (TDP)of mere 3-25 W, and were intended for use in laptop personal computers (thus the "M" moniker standing for mobile). They evolved from the core of the last Pentium III branded CPU by adding the bus interface of Pentium 4 one, an improved instruction decoding/issuing front end, improved branch prediction, SSE2 support, and a much larger cache. The first Pentium M branded CPU, codenamed the Banias, was followed by the second one - the Dothan. After the Pentium M branded processors, Intel released the Core branded dual-core mobile Yonah CPU with a modified microarchitecture. Pentium M branded CPUs can be considered as the end of the Intel P6 microarchitecture. Die of an Intel 80486DX2 microprocessor (actual size: 12×6. ... Image File history File linksMetadata Download high resolution version (934x819, 86 KB) Summary A Pentium M 730 core Dothan processor it: Processore Pentium M 730 core Dothan For questions see my userpage in -Rosco Licensing File links The following pages link to this file: Pentium M Metadata This file contains... Intel Corporation (NASDAQ: INTC, SEHK: 4335), founded in 1968 as Integrated Electronics Corporation, is an American multinational corporation that is best known for designing and manufacturing microprocessors and specialized integrated circuits. ... Die of an Intel 80486DX2 microprocessor (actual size: 12×6. ... A megahertz (MHz) is one million (106) hertz, a measure of frequency. ... A gigahertz is a billion hertz or a thousand megahertz, a measure of frequency. ... In computers, the front side bus (FSB) or system bus is the physical bi-directional data bus that carries all electronic signal information between the central processing unit (CPU) and the northbridge. ... Megatransfer is a term used in computer technology, referring to a number of data transfers (or operations). ... Megatransfer is a term used in computer technology, referring to a number of data transfers (or operations). ... The metal-oxide-semiconductor field-effect transistor (MOSFET, MOS-FET, or MOS FET) is by far the most common field-effect transistor in both digital and analog circuits. ... A micrometre (American spelling: micrometer, symbol µm) is an SI unit of length equal to one millionth of a metre, or about a tenth of the diameter of a droplet of mist or fog. ... It has been suggested that some sections of this article be split into a new article entitled instruction set architecture. ... x86 or 80x86 is the generic name of a microprocessor architecture first developed and manufactured by Intel. ... Microarchitecture consists of a set of microprocessor design techniques used to implement the instruction set (including microcode, pipelining, cache systems, etc. ... The P6 microarchitecture is the sixth generation Intel x86 microprocessor architecture, released in 1995. ... This article does not cite any references or sources. ... In computing, Socket 478 is a type of CPU socket used for Intels Pentium 4 and Celeron series CPUs. ... Image File history File links Pentium_m_2006. ... Image File history File links Intel Pentium M Logo File history Legend: (cur) = this is the current file, (del) = delete this old version, (rev) = revert to this old version. ... 32-bit is a term applied to processors, and computer architectures which manipulate the address and data in 32-bit chunks. ... x86 or 80x86 is the generic name of a microprocessor architecture first developed and manufactured by Intel. ... A microprocessor is a programmable digital electronic component that incorporates the functions of a central processing unit (CPU) on a single semiconducting integrated circuit (IC). ... The P6 microarchitecture is the sixth generation Intel x86 microprocessor architecture, released in 1995. ... Microarchitecture consists of a set of microprocessor design techniques used to implement the instruction set (including microcode, pipelining, cache systems, etc. ... Year 2003 (MMIII) was a common year starting on Wednesday of the Gregorian calendar. ... The Pentium 4[1] brand refers to Intels mainstream desktop and mobile single-core CPUs (introduced on November 20, 2000[2]) with the seventh-generation NetBurst architecture, which was the companys first all-new design since the Intel P6 of the Pentium Pro branded CPUs of 1995. ... CPU can stand for: in computing: Central processing unit in journalism: Commonwealth Press Union in law enforcement: Crime prevention unit in software: Critical patch update, a type of software patch distributed by Oracle Corporation in Macleans College is often known as Ash Lim. ... Intel Corporation (NASDAQ: INTC, SEHK: 4335), founded in 1968 as Integrated Electronics Corporation, is an American multinational corporation that is best known for designing and manufacturing microprocessors and specialized integrated circuits. ... Components of the Centrino platform. ... The Thermal Design Power (TDP) represents the maximum amount of power the thermal solution in a computer system is required to dissipate. ... For other uses, see Watt (disambiguation). ... An ultraportable IBM X31 with 12 screen on an IBM T43 Thin & Light laptop with a 14 screen QWERTY keyboard on 2007 Sony Vaio laptop A laptop computer, or simply laptop (also notebook computer or notebook), is a small mobile computer, which usually weighs 2-18 pounds (1-6 kilograms... Pentium III logo The Pentium III is an x86 (more precisely, an i686) architecture microprocessor by Intel, introduced on February 26, 1999. ... CPU can stand for: in computing: Central processing unit in journalism: Commonwealth Press Union in law enforcement: Crime prevention unit in software: Critical patch update, a type of software patch distributed by Oracle Corporation in Macleans College is often known as Ash Lim. ... In computers, the front side bus (FSB) or system bus is the physical bi-directional data bus that carries all electronic signal information between the central processing unit (CPU) and the northbridge. ... SSE2, Streaming Single Instruction, Multiple Data Extensions 2, is one of the IA-32 SIMD instruction sets, first introduced by Intel with the initial version of the Pentium 4 in 2001. ... CPU can stand for: in computing: Central processing unit in journalism: Commonwealth Press Union in law enforcement: Crime prevention unit in software: Critical patch update, a type of software patch distributed by Oracle Corporation in Macleans College is often known as Ash Lim. ... Intel Corporation (NASDAQ: INTC, SEHK: 4335), founded in 1968 as Integrated Electronics Corporation, is an American multinational corporation that is best known for designing and manufacturing microprocessors and specialized integrated circuits. ... It has been suggested that Intel Pentium Dual Core be merged into this article or section. ... A Dual-core CPU combines two independent processors and their respective caches and cache controllers onto a single silicon die, or integrated circuit. ... It has been suggested that Intel Pentium Dual Core be merged into this article or section. ... The P6 microarchitecture is the sixth generation Intel x86 microprocessor architecture, released in 1995. ...

Contents

Overview

The Pentium M represented a new and radical departure for Intel, as it was not a low-power version of the desktop-oriented Pentium 4, but instead a heavily modified version of the Pentium III Tualatin design (itself based on the Pentium Pro core design). It is optimised for power efficiency, a vital characteristic for extending notebook computer battery life. Running with very low average power consumption and much lower heat output than desktop processors, the Pentium M runs at a lower clock speed than the laptop version of the Pentium 4 (The Pentium 4-Mobile, or P4-M), but with similar performance - a 1.6 GHz Pentium M can typically attain the performance of a 2.4 GHz Pentium 4-M. [1] The Pentium 4[1] brand refers to Intels mainstream desktop and mobile single-core CPUs (introduced on November 20, 2000[2]) with the seventh-generation NetBurst architecture, which was the companys first all-new design since the Intel P6 of the Pentium Pro branded CPUs of 1995. ... Pentium III logo The Pentium III is an x86 (more precisely, an i686) architecture microprocessor by Intel, introduced on February 26, 1999. ... Pentium III logo The Pentium III is an x86 (more precisely, an i686) architecture microprocessor by Intel, introduced on February 26, 1999. ... The Pentium Pro is a sixth-generation x86 architecture microprocessor (P6 core) produced by Intel and was originally intended to replace the original Pentium in a full range of applications, but later, was reduced to a more narrow role as a server and high-end desktop chip. ... The Pentium 4[1] brand refers to Intels mainstream desktop and mobile single-core CPUs (introduced on November 20, 2000[2]) with the seventh-generation NetBurst architecture, which was the companys first all-new design since the Intel P6 of the Pentium Pro branded CPUs of 1995. ...


The Pentium M coupled the execution core of the Pentium III with a Pentium 4 compatible bus interface, an improved instruction decoding/issuing front end, improved branch prediction, SSE2 support, and a much larger cache. The usually power-hungry secondary cache uses an access method to avoid switching on any parts of it which are not being accessed. Other power saving methods include dynamically variable clock frequency and core voltage, allowing the Pentium M to throttle clock speed when the system is idle in order to conserve energy, using the SpeedStep 3 technology (which has more sleep stages than previous versions of SpeedStep). With this technology, a 1.6 GHz Pentium M can effectively throttle to clock speeds of 600 MHz, 800 MHz, 1000 MHz, 1200 MHz, 1400 MHz and 1600 MHz; these intermediate clock states allow the CPU to better throttle clock speed to suit conditions. The power requirements of the Pentium M varies from 5 watts when idle to 27 watts at full load. This is useful to notebook manufacturers as it allows them to include the Pentium M into smaller notebooks. SSE2, Streaming Single Instruction, Multiple Data Extensions 2, is one of the IA-32 SIMD instruction sets, first introduced by Intel with the initial version of the Pentium 4 in 2001. ... SpeedStep has lowered this Pentium 4s Clock Speed from 3Ghz to 2. ...


Although Intel has marketed the Pentium M exclusively as a mobile product, motherboard manufacturers such as AOpen, DFI and MSI have been shipping Pentium M compatible boards designed for enthusiast, HTPC, workstation and server applications. An adapter, the CT-479, has also been developed by ASUS to allow the use of Pentium M processors in selected ASUS motherboards designed for Socket 478 Pentium 4 processors. Shuttle Inc. offers packaged Pentium M desktops, marketed for low energy consumption and minimal cooling system noise. AOpen is a major electronics manufacturer that makes computers and parts for computers. ... For other uses of DFI, see DFI (disambiguation). ... MSI may mean any of: Math Science Institute, a major in Brooklyn Technical High School Media Sports Investment, the international fund of investors that runs Sport Club Corinthians Paulista Medium Scale Integration, a kind of electronic chips Message Signaled Interrupts, a PCI 2. ... A Home Theater PC (or HTPC) is a computer that is used to replace components in a home theater system. ... For other uses, see ASUS (disambiguation). ... In computing, Socket 478 is a type of CPU socket used for Intels Pentium 4 and Celeron series CPUs. ... The Pentium 4[1] brand refers to Intels mainstream desktop and mobile single-core CPUs (introduced on November 20, 2000[2]) with the seventh-generation NetBurst architecture, which was the companys first all-new design since the Intel P6 of the Pentium Pro branded CPUs of 1995. ... Shuttle (TAIEX:2405) is a Taiwan-based manufacturer of motherboards, barebone computers, complete PC systems, and monitors. ...


Pentium M processors are also of interest to embedded systems' manufacturers because the low power consumption of the Pentium M allows the design of fanless and miniaturized embedded PCs. A router, an example of an embedded system. ...


Banias

As the M line was originally designed in Israel, the first Pentium M was identified by the codename Banias, named after an ancient site in the Golan Heights. Given the product code 80535, it initially had no model number suffix, but was later identified as the Pentium M 705. It was manufactured on a 130 nm process, was released at frequencies from 1.3 GHz to 1.7 GHz using a 400 MT/s FSB, and had 1 MiB of Level 2 cache. The core average TDP (Thermal Design Power) is 24.5 watts. For the city in northwestern Syria, see Baniyas For information on the processor formerly codenamed Banias, please see Pentium M The Banias Waterfall The remains of the city of Banias (Arabic pronunciation of Panias) are located at the foot of Mt. ... The Golan Heights (‎ Ramat HaGolan, Arabic: Habat al-Å«lān) or Golan is a mountainous area in northeastern Israel[1] on the border of Syria, Lebanon, and Jordan. ... Megatransfer is a term used in computer technology, referring to a number of data transfers (or operations). ... In computers, the front side bus (FSB) or system bus is the physical bi-directional data bus that carries all electronic signal information between the central processing unit (CPU) and the northbridge. ... A mebibyte (a contraction of mega binary byte) is a unit of information or computer storage, abbreviated MiB. 1 MiB = 220 bytes = 1,048,576 bytes = 1,024 kibibytes 1 MiB = 1024 (= 210) kibibytes (KiB), and 1024 MiB equal one gibibyte (GiB). ... The Thermal Design Power (TDP) represents the maximum amount of power the thermal solution in a computer system is required to dissipate. ...


The CPUID signature for a Banias is 0x69X. The CPUID opcode is an instruction (its name derived from CPU IDentification) for the x86 architecture. ...


Dothan

Pentium M 730 core Dothan backside

Intel launched its improved Pentium M, formerly known as Dothan, named after another ancient town in Israel, on May 10, 2004. Dothan Pentium M processors (product code 80536) are among the first Intel processors to be identified using a "processor number" rather than a clockspeed rating, and the mainstream versions are known as Pentium M 710 (1.4 GHz), 715 (1.5 GHz), 725 (1.6 GHz), 735 (1.7 GHz), 745 (1.8 GHz), 755 (2.0 GHz), and 765 (2.1 GHz). The processor does not support hyperthreading nor SSE3. Image File history File linksMetadata Download high resolution version (853x747, 179 KB) File links The following pages link to this file: Pentium M Metadata This file contains additional information, probably added from the digital camera or scanner used to create or digitize it. ... Image File history File linksMetadata Download high resolution version (853x747, 179 KB) File links The following pages link to this file: Pentium M Metadata This file contains additional information, probably added from the digital camera or scanner used to create or digitize it. ... Dothan was a city located at north of Shechem, and about 100 km north of Hebron, house of Jacob. ... Hyper-Threading (HTT = Hyper Threading Technology) is Intels trademark for their implementation of the simultaneous multithreading technology on the Pentium 4 microarchitecture. ... SSE3, also known by its Intel code name Prescott New Instructions (PNI), is the third iteration of the SSE instruction set for the IA-32 architecture. ...


These 700 series Pentium M processors retain the same basic design as the original Pentium M, but are manufactured on a 90 nm process, with twice the secondary cache. Die size, at 84 mm², remains in the same neighborhood as the original Pentium M, even though the 700 series contains approximately 140 million transistors, most of which make up the massive 2 MiB cache. TDP is also down to 21 watts (from 24.5 watts in Banias), though power use at lower clockspeeds has increased slightly. However, tests conducted by third party hardware review sites show that Banias and Dothan equipped notebooks have roughly equivalent battery life.[citation needed] Additionally third party hardware review sites have benchmarked the Dothan at approx 10-20% better performance than the Banias in most situations. The 90 nm node refers to the level of semiconductor process technology that was reached in the 2002-2003 timeframe, by most leading semiconductor companies, like Intel, Texas Instruments, IBM, and TSMC. The origin of the 90 nm value is historical, as it represents a 70% scaling every 2-3... The Thermal Design Power (TDP) represents the maximum amount of power the thermal solution in a computer system is required to dissipate. ...


The processor line has models running at clock speeds from 1.0 GHz to 2.26 GHz as of July 2005. The models with lower frequencies were either low voltage or ultra-low voltage CPUs designed for even better battery life and reduced heat output. The 718 (1.3 GHz), 738 (1.4 GHz), and 758 (1.5 GHz) models are low-voltage (1.116 V) with a TDP of 10 W, while the 723 (1.0 GHz), 733 (1.1 GHz), and 753 (1.2 GHz) models are ultra-low voltage (0.940 V) with a TDP of 5 W.


Revisions of the Dothan core were released in the first quarter of 2005 with the Sonoma chipsets and supported a 533 MT/s FSB and XD (Intel's name for the NX bit) (and the PAE support required for it was enabled, unlike earlier Pentium Ms that had it disabled). These processors include the 730 (1.6 GHz), 740 (1.73 GHz), 750 (1.86 GHz), 760 (2.0 GHz) and 770 (2.13 GHz). These models all have a TDP of 27 W and a 2 MiB L2 cache. The NX bit, which stands for No eXecute, is a technology used in CPUs to segregate areas of memory for use by either storage of processor instructions (or code) or for storage of data, a feature normally only found in Harvard architecture processors. ...


In July 2005, Intel released the 780 (2.26 GHz) and the low-voltage 778 (1.60 GHz).


The CPUID signature for a Dothan is 0x6DX. The CPUID opcode is an instruction (its name derived from CPU IDentification) for the x86 architecture. ...


Core Solo and Core Duo

Main article: Intel Core

The next generation of processors (with a microarchitecture being a derivative of P6 found in Pentium M CPUs), codenamed Yonah, was released under the Intel Core brand, as Core Duo and Core Solo (Duo with one disabled core). It has been suggested that Intel Pentium Dual Core be merged into this article or section. ... The P6 microarchitecture is the sixth generation Intel x86 microprocessor architecture, released in 1995. ... CPU can stand for: in computing: Central processing unit in journalism: Commonwealth Press Union in law enforcement: Crime prevention unit in software: Critical patch update, a type of software patch distributed by Oracle Corporation in Macleans College is often known as Ash Lim. ... It has been suggested that Intel Pentium Dual Core be merged into this article or section. ...


Notes and references

  1. ^ Microprocessor Hall of Fame. Intel. Retrieved on 2007-08-11.

Year 2007 (MMVII) is the current year, a common year starting on Monday of the Gregorian calendar and the AD/CE era. ... is the 223rd day of the year (224th in leap years) in the Gregorian calendar. ...

See also

The P6 microarchitecture is the sixth generation Intel x86 microprocessor architecture, released in 1995. ... Components of the Centrino platform. ... . ...

External links

  • Intel's Pentium M Homepage
  • Intel's list of all Pentium M variants
  • Intel Processor comparison table
  • Intel Embedded Solution Directory (miniature fanless Pentium M computer module)
  • Homepage of the software "Notebook Hardware Control"
  • Homepage of the Software "Linux-PHC" to undervolt a Pentium M with linux
  • Intel Pentium M technical specifications
  • Yonah details from X86-secret (french translated to English through google)
  • AnandTech: Yonah Performance Preview
  • SpeedswitchXP - CPU frequency control for notebooks

 
 

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