GLOSSARY- Processor
Pentium 4
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| Pentium 4:
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The Pentium 4 brand refers to Intel's line of single-core mainstream desktop and laptop central processing units (CPUs) introduced on November 20, 2000. They had the 7th-generation architecture, called NetBurst, which was the company's first all-new design since 1995, when the Intel P6 architecture of the Pentium Pro CPUs had been introduced. NetBurst differed from the preceding Intel P6 - of Pentium III, II, etc. - by featuring a very deep instruction pipeline to achieve very high clock speeds (up to 4 GHz) limited only by max. power consumption reaching up to 115 W in 3.6–3.8 GHz Prescotts and Prescotts 2M (a high TDP requires an additional cooling that can be noisy or expensive). In 2004, the initial 32-bit x86 instruction set of the Pentium 4 microprocessors was extended by the 64-bit x86-64 set.
Pentium 4 CPUs introduced the SSE2 and SSE3 instruction sets to accelerate calculations, transactions, media processing, 3D graphics, and games. They also integrated Hyper-threading (HT), a feature to make one physical CPU working as two logical and virtual CPUs. The Intel's flagship Pentium 4 also came in a low-end version branded Celeron (often referred to as Celeron 4), and a high-end derivative, Xeon, intended for multiprocessor servers and workstations. In 2005, the Pentium 4 was superseded by the Pentium D and Pentium Extreme Edition dual-core CPUs.
The Pentium 4 has an IHS (Integrated Heat Spreader) that prevents the CPU core from accidentally getting damaged when mounting and unmounting cooling solutions. Prior to the IHS, a CPU shim was sometimes used by people worried about damaging the core. Overclockers sometimes removed the IHS on Socket 478 chips to allow for more direct heat transfer. However, on LGA775 chips the IHS is directly welded to the processor core, meaning that the IHS cannot be removed without irreparably damaging the processor.
| Intel Pentium 4 processor family |
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Desktop |
Laptop |
| Code-named |
Core |
Date released |
Code-named |
Core |
Date released |
Willamette
Northwood
Prescott |
(180nm)
(130nm)
(90nm) |
Jan 2001
Jan 2002
Mar 2004 |
Northwood |
(130nm) |
Jun 2003 |
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Northwood
Pentium 4-M |
(130nm) |
Apr 2002 |
| Hyper-threading (HT) |
|
|
Northwood
Prescott
Prescott 2M
Cedar Mill |
(130nm)
(90nm)
(90nm)
(65nm) |
May 2003
Feb 2004
Feb 2005
Jan 2006 |
Northwood
Prescott |
(130nm)
(90nm) |
Sep 2003
Jun 2004 |
|
|
Gallatin XE
Prescott 2M XE |
(130nm)
(90nm) |
Sep 2003
Feb 2005 |
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