References are numbered in [brackets], which are listed here. A number after the dot gives the page in the source.

Last updated: 2023 October 25.

2001

January 3

• Intel releases the 800 MHz Celeron processor, with 100 MHz system bus. Price is US170ドル in 1000-unit quantities. [1172.162] [1559]
• Intel releases the 1.3 GHz Pentium 4 processor. [1559]

January 8

• Advanced Micro Devices launches the 850 MHz Duron processor. Price is US149ドル in 1000 unit quantities. [1119.19] [1559]

January

• Advanced Micro Devices releases 600 and 700 MHz mobile Duron processors. They feature 192 kB cache memory, and 200 MHz system bus. Prices are US75 and US123ドル respectively. [1559]

January 30

• Intel releases a low-power 500 MHz mobile Pentium III processor. The processor incorporates SpeedStep technology, allowing the processor to operate at 300 MHz when the computer is running on battery power. Price is US208ドル in 1000-unit quantities. [1559]

February

• Intel introduces the Ultra Low Voltage Mobile Pentium III processor. It features 500 MHz speed, under 1 volt, under 0.5 watt. Price is US208ドル. [1707.70]
• Intel introduces the 500 MHz Ultra Low Voltage Mobile Celeron processor. Price is US118ドル. [1707.70]

March 22

• Advanced Micro Devices launches the 1.33 GHz Athlon processor. Price is US350ドル in 1000-unit quantities. [1263.36]

(month unknown)

• Intel announces the release of the 1 GHz mobile Pentium III processor, for US722ドル. [1121.29]

April 9

• Intel releases the 850 MHz Celeron processor. Price is US138ドル in 1000-unit quantities. [1559]

April 23

• Intel releases the 1.6 GHz Pentium 4 processor. Price is US294ドル in quantities of 1000. [1551.8]
• Intel releases the 1.7 GHz Pentium 4 processor. Price is US352ドル in quantities of 1000. [1551.8] [1559]

May 14

• Advanced Micro Devices introduces the Athlon 4 processor, at speeds ranging from 850 MHz to 1 GHz, with 256 kB integrated cache, 200 MHz system bus, PowerNow technology, and Streaming SIMD Extensions. The processor is made using a 0.18-micron manufacturing process. Code-name during development was Palomino. [1559]
• Advanced Micro Devices announces 800 and 850 MHz Duron processors, with integrated cache, PowerNow technology, and Streaming SIMD Extensions. Code-name during development was Morgan. [1559]

May

• Intel releases the Itanium processor. It features 32 kB Level 1 cache, 96 kB Level 2 cache, 2 or 4 MB Level 3 cache, 733 or 800 MHz speed, 266 MHz bus, 2.1 Gbps bandwidth, IA-64 instruction set, 128 integer and 128 floating-point 64-bit registers, 64-bit data path, theoretical address space 18 exabytes (18 billion gigabytes), Explicitly Parallel Instruction Computing (EPIC). Code-name during development was Merced. [1278.110] [1418.28]
• Intel introduces the 1.4 GHz Xeon processor. It incorporates 42 million transistors in a 0.18-micron process. Code-name during development was Foster. [1278.114]
  
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• IBM simplifies its product line in the US, eliminating processors by Advanced Micro Devices. [1559]
• Advanced Micro Devices introduces the 1 GHz Duron processor. It features 64 kB Level 1 data cache, 64 kB Level 1 instruction cache, 64 kB Level 2 cache, three pipelined FPUs, max address 4 GB, and 200 MHz system bus. It supports MMX, 3DNow!, Enhanced 3DNow!, 3DNow! Professional instructions. It incorporates 25.2 million transistors in a 0.18-micron process. Code-name during development was Morgan. [1454.124]

May 21

• Intel announces the 750 MHz mobile Pentium III processor. The 1.35-volt processor can step down to 500 MHz at 1.1 volts when running on battery power. [1559]
• Intel announces the 600 MHz mobile Pentium III processor. The 1.1-volt processor can step down to 300 MHz at 0.975 volts when running on battery power. [1559]
• Intel announces two 600 MHz mobile Celeron processor. One operates at 1.35 volts, the other at 1.1 volts. [1559]
• Intel announces the 800 MHz Celeron processor. [1278.114] [1559]

May

• Intel begins full production shipments of the 1.13 GHz Pentium III processor. [1278.114] [1559]

June 6

• Advanced Micro Devices releases the 1.4 GHz Athlon processor. Price is US253ドル in 1000-unit quantities. [1559]
• Advanced Micro Devices releases the 950 MHz Duron processor. Price is US122ドル in 1000-unit quantities. [1559]

June

• Advanced Micro Devices introduces the 1.06 GHz Athlon MP processor. It features 64 kB Level 1 data cache, 64 kB Level 1 instruction cache, 256 kB Level 2 cache, three pipelined FPUs, max address 4 GB, and 266 MHz system bus. It supports MMX, 3DNow!, Enhanced 3DNow!, 3DNow! Professional instructions. It incorporates 37.5 million transistors in a 0.18-micron process. Code-name during development was Palomino. [1278.114] [1454.124]

July 2

• Intel releases the 1.8 GHz Pentium 4 processor. It features dual RDRAM memory banks, 400 MHz system bus, and 0.18-micron process technology. Price is US562ドル in quantities of 1000. [1221.27] [1551.8]

August

• At the Intel Developers Forum in San Jose, California, Intel demonstrates a 2 GHz Pentium 4 processor. [1223.6]

August 20

• Advanced Micro Devices announces the 1.1 GHz Athlon 4 processor for portable computers. It features 200 MHz system bus, PowerNow technology, Streaming SIMD Extensions. Price is US425ドル. [1559]
• Advanced Micro Devices announces the 900 MHz Duron processor for portable computers. It features 200 MHz system bus, PowerNow technology, Streaming SIMD Extensions. Price is US130ドル. [1559]

August

• Advanced Micro Devices introduces the 1.0 GHz Duron processor. It features 64 kB Level 1 data cache, 64 kB Level 1 instruction cache, 64 kB Level 2 cache, three pipelined FPUs, max address 4 GB, and 200 MHz system bus. It supports MMX, 3DNow!, Enhanced 3DNow!, 3DNow! Professional instructions. It incorporates 25.2 million transistors in a 0.18-micron process. Code-name during development was Morgan. [1278.114] [1454.124]

August 27

• Intel releases the 1.9 GHz and 2.0 GHz Pentium 4 processors. Prices are US375ドル and US562ドル respectively in quantities of 1000. [1551.8] [1559]

August 31

• Intel launches new Celeron processors, at speeds of 950 MHz, 1 GHz, and 1.1GHz. Each features 100 MHz system bus, and 128 kB of level 2 cache. Prices are US74,ドル US89,ドル and US103ドル respectively. [1559]

September 25

• Romania issues a postage stamp that depicts the first microprocessor, in 1971. [2525.548]

(month unknown)

• Intel announces mobile Pentium III processors based on 0.13-micron process technology, with 512 kB Level 2 cache and 133 MHz system bus. Speeds and prices in 1000-unit quantities are US625ドル (1.13 GHz), US499ドル (1.06 GHz), US394ドル (1 GHz), US278ドル (933 MHz) US247ドル (866 MHz). [1221.27]

October 1

• Advanced Micro Devices releases the 1.1 GHz Duron processor. Price is US103ドル in 1000-unit quantity. [1559]

October 2

• Intel introduces the 1.2 GHz Celeron processor. It features 16 kB Level 1 data cache, 16 kB Level 1 instruction cache, 256 kB Level 2 cache, 100 MHz system bus, MMX and SSE instructions, 64 GB address space. It incorporates 44 million transistors in a 0.13-micron process. Code-name during development was Tualatin. Price is US103ドル in 1000-unit quantities. [1278.114] [1454.124] [1559]

October 9

• Advanced Micro Devices introduces the 1.33 GHz Athlon XP 1500+ processor. It features 64 kB Level 1 data cache, 64 kB Level 1 instruction cache, 256 kB Level 2 cache, three pipelined FPUs, 4 GB address space, and 266 MHz system bus. It supports MMX, 3DNow!, Enhanced 3DNow!, 3DNow! Professional instructions. It incorporates 37.5 million transistors in a 0.18-micron process. Price is US160ドル in 1000-unit quantities. Code-name during development was Palomino, and briefly Corvette. "XP" stands for extreme performance. [1278.114] [1454.124] [1463.24] [1559]
• Advanced Micro Devices releases the Athlon XP 1600+ processor. Price is US160ドル. [1551.8]
• Advanced Micro Devices releases the Athlon XP 1700+ processor. Price is US190ドル. [1551.8]
• Advanced Micro Devices releases the 1.53 GHz Athlon XP 1800+ processor. Price is US252ドル. [1551.8] [1559]

October 15

• The Microprocessor Forum is held, in San Jose, California. Advanced Micro Devices gives details of Hammer processors. [1559]

October

• IBM introduces the 700 MHz PowerPC G3 processor. It features 32 kB Level 1 data cache, 32 kB Level 1 instruction cache, 512 kB Level 2 cache, 100 MHz system bus, three pipelined FPUs, 4 GB address space. It incorporates 38 million transistors in a 0.13-micron process. [1454.124]

November 5

• Advanced Micro Devices introduces the 1.6 GHz Athlon XP 1900+ processor. It features 64 kB Level 1 data cache, 64 kB Level 1 instruction cache, 256 kB Level 2 cache, three pipelined FPUs, max address 4 GB, and 266 MHz system bus. It supports MMX, 3DNow!, Enhanced 3DNow!, and 3DNow! Professional instructions. It incorporates 37.6 million transistors in a 0.13-micron process. Price is US269ドル in 1000-unit quantities.. Code-name during development was Thoroughbred. [1551.8] [1559] (June 2002 [1454.124])

November 12

• Advanced Micro Devices announces the 950 MHz mobile Duron processor. Price is US160ドル. [1559]
• Advanced Micro Devices announces the 1.2 GHz mobile Athlon 4 processor. Price is US525ドル. [1559]

November 15

• Advanced Micro Devices introduces the 1.2 MHz Duron processor. It features 192 kB on-chip cache, 200 MHz front-side bus, superscalar floating-point unit, 3DNow! Professional technology, and hardware data pre-fetch. Price is US103ドル in 1,000-unit quantities. [1210.25] [1559]

(month unknown)

• Intel demonstrates a 3.5 GHz processor. [1278.109]

December

• Intel unveils plans for the Intel TeraHertz transistor, allowing up to one billion transistors on a chip by 2005. [1278.108] [1283.21]

October-December

• Shipments of Pentium 4 processors during October to December: 15 million. [1559]

Year

• Market share of personal computer processors during the year: Intel 78.7%, Advanced Micro Devices 20.2-22%. [1559] [2087.66]
• Market share of Windows-based personal computer processors in the world during the year: Advanced Micro Devices 18%. [1559]
• Market share of x86 processors in the world during the year: Advanced Micro Devices 14.8%. [1559]
• Market share of desktop personal computer processors worldwide during the year: Advanced Micro Devices 22%. [1559]
• Market share of home desktop personal computer processors in Japan during the year: Advanced Micro Devices 42%. [1559]
• Market share of home desktop personal computer processors in Western Europe during the year: Advanced Micro Devices 41%. [1559]
• Market share of home desktop personal computer processors in Eastern Europe during the year: Advanced Micro Devices 28%. [1559]