Editing ICOMP (index)

{{More citations needed|date=November 2009}}
{{lowercase title|title=iCOMP}}
 {{multiple image |perrow=2 |total_width=300
 | header       = Various CPUs marked with iCOMP index's.
 | direction    = horizontal
 | image1       = FC80486DX4-75 AK SX883 USA 1995 01 WT.jpg
 | caption1     = i486 DX4 75 MHz<br />iCOMP=319
 | image2       = I486DX4.jpg
 | caption2     = i486 DX4 100 MHz<br />iCOMP = 435
 | image3       = Pentium 60 SX948 gold front.jpg
 | caption3     = Pentium 60 MHz<br />iCOMP = 510
 | image4       = Ic-photo-Intel--A80502-100--(Pentium-CPU).png
 | caption4     = Pentium 100 MHz<br />iComp = 815
 | image5       = Ic-photo-Intel--A80502-120--(Pentium-CPU).JPG
 | caption5     = Pentium 120 MHz<br />iCOMP = 1000
 | image6       = Pentium 120MHz Top (50006792812).jpg
 | caption6     = Pentium 120 MHz<br />iCOMP 2 = 100
 | image7       = Ibm tp310 cpu-sy028 (cropped) P133 SY028.jpg
 | caption7     = Pentium 133 MHz<br />iCOMP 2 = 111
 | image8       = Pentium 150 and Socket 7 Motherboard (1) (cropped) A80502150 SY015.jpg
 | caption8     = Pentium 150 MHz<br />iCOMP 2 = 114
 }}

'''iCOMP''' for '''Intel Comparative Microprocessor Performance''' was an index published by [[Intel]] used to measure the relative performance of its [[microprocessor]]s.

Intel was motivated to create the iCOMP rating by research which showed that many computer buyers assumed that the clock speed – the “MHz” rating – was indicative of performance, regardless of the processor type. iCOMP ratings based on standard [[Benchmark (computing)|benchmarks]].<ref name="mP_Rep">{{cite news |title=Intel Unveils "iCOMP" Performance Index |work=[[Microprocessor Report]] |author=[[Michael Slater]] |publisher=[[MicroDesign Resources]] |volume=6 |number=13 |date=October 7, 1992 |url=https://websrv.cecs.uci.edu/~papers/mpr/MPR/ARTICLES/061302.pdf |access-date=January 4, 2024}}</ref> The formula for calculating iCOMPs is like this:
{|class="wikitable"
|-
! Category !! Benchmark !! Weight
|-
| 16-bit Integer || ZDbenchCPU || {{0}}52%
|-
| rowspan="2" | 16-bit Floating-Point || 16-bit Whetstone || {{0|00}}2%
|-
| ZDbenchCPU || {{0|00}}1%
|-
| 16-bit Graphics || ZDbenchCPU* || {{0}}10%
|-
| 16-bit Video || ZDbenchCPU* || {{0|00}}5%
|-
| 32-bit Integer || [[SPECint]]92 || {{0}}15%
|-
| 32-bit Floating-Point || [[SPECfp]]92 || {{0|00}}5%
|-
| 32-bit Graphics || SPECint92* || {{0|00}}5%
|-
| 32-bit Video || SPECint92* || {{0|00}}5%
|}
The largest component is the integer CPU benchmark from [[Ziff Davis|Ziff-Davis Labs]] (ZDbenchCPU), which is derived from the earlier PC Labs benchmarks. [[Whetstone (benchmark)|Whetstone]] (as implemened in PowerMeter) is used for 16-bit floating-point, and [[SPECint]]92 and [[SPECfp]]92 are used for the 32-bit components.<ref name="mP_Rep" />

There were three revisions of the iCOMP index. Version 1.0 (1992) was benchmarked against the [[486SX]] 25, while version 2.0 (1996) was benchmarked against the Pentium 120.<ref>{{Cite web|url=http://faculty.iima.ac.in/~jajoo/icomp/icomp.htm|title=iCOMP(R) Index 2.0|website=faculty.iima.ac.in|url-status=live|archive-url=https://web.archive.org/web/19961220081455/http://www.intel.com/procs/perf/icomp/|archive-date=1996-12-20|access-date=2019-12-17}}</ref> For Version 3.0 (1999) it was [[Pentium II]] at 350&nbsp;MHz.<ref>{{Cite web|url=http://www1.intel.com:80/procs/perf/icomp/index.htm|archive-url=https://web.archive.org/web/19990225142313/http://www1.intel.com/procs/perf/icomp/index.htm|url-status=dead|archive-date=1999-02-25|title=Intel(r) Processor Performance Indicators|date=1999-02-25|access-date=2019-12-17}}</ref>

{| class="wikitable" style="text-align:right"
|+Intel iCOMP (Full List)<ref>{{cite web|url=http://www.ideasinternational.com/benchmark/intel/icomp.html |title=IDEAS Top Performers - Intel iCOMP (Full List) |work=Ideas International |access-date=February 10, 2006 |archive-url=https://web.archive.org/web/20060116062612/http://www.ideasinternational.com/benchmark/intel/icomp.html |archive-date=January 16, 2006 |url-status=dead }}</ref>
!CPU Name!!Clock (MHz)!!iCOMP 3.0!!iCOMP 2.0!!iCOMP 1.0
|-
|align=left rowspan=7|[[Pentium III]]||1000||3280|| || 
|-
|933||3100|| || 
|-
|866||2890|| || 
|-
|800||2690|| || 
|-
|750||2540|| || 
|-
|700||2420|| || 
|-
|650||2270|| || 
|-
|align=left|[[Pentium III|Pentium III E]]||600||2110|| || 
|-
|align=left rowspan=4|[[Pentium III]]||600||1930|| || 
|-
|550||1780|| || 
|-
|500||1650|| || 
|-
|450||1500|| || 
|-
|align=left rowspan=2|[[Pentium II]]||450||1240||483|| 
|-
|400||1130||440|| 
|-
|align=left|[[Celeron]]||400||1011||394||
|-
|align=left|[[Pentium OverDrive|Pentium II OverDrive]]||333||1001||387|| 
|-
|align=left rowspan=2|[[Pentium II]]||350||1000||386|| 
|-
|333||940||366|| 
|-
|align=left|[[Pentium OverDrive|Pentium II OverDrive]]||300|| ||351||
|-
|align=left|[[Celeron]]||366||890||344||
|-
|align=left|[[Pentium II]]||300|| ||332|| 
|-
|align=left|[[Celeron]]||333|| ||318|| 
|-
|align=left|[[Pentium II]]||266|| ||303|| 
|-
|align=left|[[Celeron|Celeron A]]||300|| ||296|| 
|-
|align=left|[[Pentium II]]||233|| ||267|| 
|-
|align=left|[[Celeron]]||300|| ||226|| 
|-
|align=left|[[Pentium Pro|Pentium Pro 256K]]||200|| ||220|| 
|-
|align=left|[[Celeron]]||266|| ||213|| 
|-
|align=left|[[Pentium MMX]]||233|| ||203|| 
|-
|align=left|[[Pentium Pro|Pentium Pro 256K]]||180|| ||197|| 
|-
|align=left|[[Pentium Pro|Pentium Pro 512K]]||166|| ||186||
|-
|align=left|[[Pentium MMX]]||200|| ||182|| 
|-
|align=left|[[Pentium OverDrive|Pentium OverDrive MMX 200]]||200|| ||181|| 
|-
|align=left|[[Pentium Pro|Pentium Pro 256K]]||150|| ||168|| 
|-
|align=left|[[Pentium OverDrive|Pentium OverDrive MMX 180]]||180|| ||163|| 
|-
|align=left|[[Pentium MMX]]||166|| ||160||
|-
|align=left|[[Pentium OverDrive|Pentium OverDrive MMX 166]]||166|| ||157||
|-
|align=left|[[Pentium MMX]]||150|| ||144|| 
|-
|align=left|[[Pentium OverDrive|Pentium OverDrive MMX 150]]||150|| ||144||
|-
|align=left rowspan=2|[[Pentium (brand)|Pentium]]||200|| ||142|| 
|-
|166|| ||127||1308
|-
|align=left|[[Pentium OverDrive]]||166|| ||127||1308
|-
|align=left|[[Pentium OverDrive|Pentium OverDrive MMX 150]]||125|| ||120||
|-
|align=left|[[Pentium (brand)|Pentium]]||150|| ||114||1176
|-
|align=left|[[Pentium OverDrive]]||150|| ||114||1176
|-
|align=left|[[Pentium (brand)|Pentium]]||133|| ||111||1110
|-
|align=left|[[Pentium OverDrive]]||125|| || ||1070
|-
|align=left|[[Pentium (brand)|Pentium]]||120|| ||100||1000
|-
|align=left rowspan=2|[[Pentium OverDrive]]||133|| ||84||970
|-
|120|| ||75||877
|-
|align=left rowspan=3|[[Pentium (brand)|Pentium]]
|100|| ||90||815
|-
|90|| ||81||735
|-
|75|| ||67||610
|-
|align=left|[[Pentium OverDrive]]||83|| || ||581
|-
|align=left rowspan=2|[[Pentium (brand)|Pentium]]
|66|| ||57||567
|-
|60|| ||51||510
|-
|align=left|[[Pentium OverDrive]]||63|| || ||443
|-
|align=left rowspan=2|[[Intel 80486DX4|i486 DX4]]||100|| || ||435
|-
|75|| || ||319
|-
|align=left|[[Intel 80486DX2|i486 DX2]]||66|| || ||297
|-
|align=left|[[Intel 80486DX|i486 DX]]||50|| || ||249
|-
|align=left|[[Intel 80486DX2|i486 DX2]]||50|| || ||231
|-
|align=left|[[I486_OverDrive|i486 OD-25]]||50|| || ||231<ref>Chen, Allan, Editor; Hodson Gerri, Associate Edtior, "Intelperspectives: Intel's Newsletter for MIS Profesionals, Volume 2, Number 1", Intel Corporation, Microcomputer Solutions, January/February 1993. page 11</ref>
|-
|align=left|[[Intel 80486SX2|i486 SX2]]||50|| || ||180
|-
|align=left|[[Intel 80486DX|i486 DX]]||33|| || ||166
|-
|align=left|[[I486_OverDrive|i486 OD-20]]||40|| || ||166<ref>Chen, Allan, Editor; Hodson Gerri, Associate Edtior, "Intelperspectives: Intel's Newsletter for MIS Profesionals, Volume 2, Number 1", Intel Corporation, Microcomputer Solutions, January/February 1993. page 11</ref>
|-
|align=left|[[Intel 80486SX|i486 SX]]||33|| || ||136
|-
|align=left|[[I486_OverDrive|i486 OD-20]]||33|| || ||132<ref>Chen, Allan, Editor; Hodson Gerri, Associate Edtior, "Intelperspectives: Intel's Newsletter for MIS Profesionals, Volume 2, Number 1", Intel Corporation, Microcomputer Solutions, January/February 1993. page 11</ref>
|-
|align=left|[[Intel 80486DX|i486 DX]]||25|| || ||122
|-
|align=left rowspan=2|[[Intel 80486SX|i486 SX]]||25|| || ||100
|-
|20|| || ||78
|-
|align=left|[[Intel 80386|i386 DX]]||33|| || ||68
|-
|align=left|[[Intel 80486SX|i486 SX]]||16|| || ||63
|-
|align=left|[[Intel 80386|i386 DX]]||25|| || ||49
|-
|align=left|[[Intel 80386|i386 SL]]||25|| || ||41
|-
|align=left rowspan=3|[[Intel 80386|i386 SX]]||25|| || ||39
|-
|20|| || ||32
|-
|16|| || ||22
|}

==See also==
* [[PR rating]]

==References==

<references />

{{Benchmark}}

{{DEFAULTSORT:Icomp}}
[[Category:Intel]]
[[Category:Computer-related introductions in 1992]]
[[Category:X86 architecture]]
[[Category:Computer performance]]
[[Category:Benchmarks (computing)]]


{{microcompu-stub}}