Editing List of Intel processors (section)

===32-bit processors: the 80486 range===
[[File:Intel i486 dx 33mhz 2007 03 27.jpg|thumb|Intel 80486DX 33&nbsp;MHz]]

====[[Intel 80486DX|80486DX]]====
* Introduced April 10, 1989
* Clock rates:
** 25&nbsp;MHz, 20&nbsp;MIPS (16.8 SPECint92, 7.40 SPECfp92)
** 33&nbsp;MHz, 27&nbsp;MIPS (22.4 SPECint92 on Micronics M4P 128&nbsp;KB L2), introduced May 7, 1990
** 50&nbsp;MHz, 41&nbsp;MIPS (33.4 SPECint92, 14.5 SPECfp92 on Compaq/50L 256&nbsp;KB L2), introduced June 24, 1991
* Bus width: 32 bits
* 1.2 million transistors at 1&nbsp;μm; the 50&nbsp;MHz was at 0.8&nbsp;μm
* Addressable memory 4&nbsp;GB
* Virtual memory 64&nbsp;TB<ref name="Ram2001"/>
* [[Level 1&nbsp;cache]] of 8&nbsp;KB on chip
* Math coprocessor on chip
* 50× performance of the 8088
* Officially named Intel486&nbsp;DX
* Used in desktop computing and servers
* Family 4 model 1

[[File:Intel i486 sx 33mhz 2007 03 27.jpg|thumb|Intel 80486SX 33&nbsp;MHz]]

====[[Intel 80486SX|80486SX]]====
* Introduced April 22, 1991
* Clock rates:
** 16&nbsp;MHz, 13&nbsp;MIPS
** 20&nbsp;MHz, 16.5&nbsp;MIPS, introduced September 16, 1991
** 25&nbsp;MHz, 20&nbsp;MIPS (12 SPECint92), introduced September 16, 1991
** 33&nbsp;MHz, 27&nbsp;MIPS (15.86 SPECint92), introduced September 21, 1992
* Bus width: 32 bits
* 1.185 million transistors at 1&nbsp;μm and 900,000 at 0.8&nbsp;μm
* Addressable memory 4&nbsp;GB
* Virtual memory 64&nbsp;TB<ref name="Ram2001"/>
* Identical in design to 486DX but without a math coprocessor. The first version was an 80486DX with disabled math coprocessor in the chip and different pin configuration. If the user needed math coprocessor capabilities, they must add 487SX which was actually a 486DX with different pin configuration to prevent the user from installing a 486DX instead of 487SX, so with this configuration 486SX+487SX you had 2 identical CPU's with only 1 effectively turned on
* Officially named Intel486&nbsp;SX
* Used in low-cost entry to 486 CPU desktop computing, as well as extensively in low cost mobile computing
* Upgradable with the [[Intel 80486 OverDrive|Intel OverDrive processor]]
* Family 4 model 2

[[File:Intel i486 dx2 66mhz 2007 03 27.jpg|thumb|Intel 80486DX2 66&nbsp;MHz]]

====[[Intel 80486DX2|80486DX2]]====
* Introduced March 3, 1992
* Runs at twice the speed of the external bus (FSB)
* Socket 3
* Clock rates:
** 40&nbsp;MHz
** 50&nbsp;MHz, 41&nbsp;MIPS
** 66&nbsp;MHz, 54&nbsp;MIPS
* Officially named Intel486&nbsp;DX2
* Family 4 model 3

[[File:KL Intel 486SL.jpg|thumb|Intel 80486SL]]

====[[Intel 80486SL|80486SL]]====
* Introduced November 9, 1992
* Clock rates:
** 20&nbsp;MHz, 15.4&nbsp;MIPS
** 25&nbsp;MHz, 19&nbsp;MIPS
** 33&nbsp;MHz, 25&nbsp;MIPS
* Bus width: 32 bits
* 1.4 million transistors at 0.8&nbsp;μm
* Addressable memory 4&nbsp;GB
* Virtual memory 64&nbsp;TB
* Officially named Intel486 SL
* Used in notebook computers
* Family 4 model 4

[[File:Intel i486 dx4 100mhz 2007 03 27.jpg|thumb|Intel 80486DX4 100&nbsp;MHz]]
====[[Intel 80486DX4|80486DX4]]====
* Introduced March 7, 1994
* Clock rates:
** 75&nbsp;MHz, 53&nbsp;MIPS (41.3 SPECint92, 20.1 SPECfp92 on Micronics M4P 256&nbsp;KB L2)
** 100&nbsp;MHz, 70.7&nbsp;MIPS (54.59 SPECint92, 26.91 SPECfp92 on Micronics M4P 256&nbsp;KB L2)
* 1.6 million transistors at 0.6&nbsp;μm
* Bus width: 32 bits
* Addressable memory 4&nbsp;GB
* Virtual memory 64&nbsp;TB
* [[Socket 3]] 168-pin [[pin grid array|PGA Package]], or 208 [[QFP|sq. ftP]] package
* Officially named Intel486&nbsp;DX4
* Used in high performance entry-level desktops and value notebooks
* Family 4 model 8