Pentium III
Sign in to saveAlso known as Intel Pentium III, Pentium 3, Intel Pentium 3
line of desktop and mobile microprocessors produced by Intel
Key facts
- Launched
- February 28, 1999
- Discontinued
- April 23, 2004 (for desktop units) , May 18, 2007 (for mobile units) , July 14, 2009 (end of life)
- Marketed by
- Intel
- Designed by
- Intel
- Common manufacturer
- Intel
- Product code
- Katmai: 80525 Coppermine: 80526 Coppermine T: 80533 Tualatin: 80530
- Max cpu clock rate
- 450 MHz to 1.4 GHz
- Fsb speeds
- 100 MT/s to 133 MT/s
- Transistors
- Katmai: 9.5 million Coppermine: 28 million Tualatin: 47 million
- Sockets
- Slot 1 Socket 370 Socket 495 (mobile) Socket 479 (mobile)
- L1 cache
- 32 KB (16 KB data + 16 KB instructions)
- L2 cache
- 128–512 KB
- Technology node
- 250 nm to 130 nm
- Microarchitecture
- P6
- Instruction set
- IA-32
- Extensions
- MMX , SSE
- Core names
- Katmai (desktop only) Coppermine Coppermine T (desktop only) Tualatin
- Variant
- Celeron
via Wikipedia infobox
Wikidata facts
- Image
- Intel Pentium III Processor Logo.svg
Show 4 more facts
- Commons category
- Pentium III
- number of processor cores
- 1
- discontinuation date
- 2007-05-18
- publication date
- 1999-02-26
Sources (2)
via Wikidata · CC0
~17 min read
Article
The Pentium III (marketed as Intel Pentium III Processor, informally PIII or P3 ) brand refers to Intel's 32-bit x86 desktop and mobile CPUs based on the sixth-generation P6 microarchitecture introduced on February 28, 1999.
The brand's initial processors were largely based on the cores of the earlier Klamath (350 nm)/Deschutes (250 nm) Pentium II processors. The most notable differences were the addition of the Streaming SIMD Extensions (SSE) instruction set (to accelerate floating point and parallel calculations), and the introduction of a controversial serial number embedded in the chip during manufacturing (absent on Tualatin and later Intel processors).