ICOMP (index) explained

iCOMP for Intel Comparative Microprocessor Performance was an index published by Intel used to measure the relative performance of its microprocessors.

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 benchmarks.[1] The formula for calculating iCOMPs is like this:

Category Benchmark Weight
16-bit Integer ZDbenchCPU 52%
16-bit Floating-Point 16-bit Whetstone 2%
ZDbenchCPU 1%
16-bit Graphics ZDbenchCPU* 10%
16-bit Video ZDbenchCPU* 5%
32-bit Integer SPECint92 15%
32-bit Floating-Point SPECfp92 5%
32-bit Graphics SPECint92* 5%
32-bit Video SPECint92* 5%
The largest component is the integer CPU benchmark from Ziff-Davis Labs (ZDbenchCPU), which is derived from the earlier PC Labs benchmarks. Whetstone (as implemened in PowerMeter) is used for 16-bit floating-point, and SPECint92 and SPECfp92 are used for the 32-bit components.

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.[2] For Version 3.0 (1999) it was Pentium II at 350 MHz.[3]

Intel iCOMP (Full List)[4] !CPU Name!!Speed (MHz)!!iCOMP 3.0!!iCOMP 2.0!!iCOMP 1.0
align=left rowspan=7Pentium III10003280
9333100
8662890
8002690
7502540
7002420
6502270
Pentium III E6002110
align=left rowspan=4Pentium III6001930
5501780
5001650
4501500
align=left rowspan=2Pentium II4501240483
4001130440
Celeron4001011394
Pentium II OverDrive3331001387
align=left rowspan=2Pentium II3501000386
333940366
Pentium II OverDrive300351
Celeron366890344
Pentium II300332
Celeron333318
Pentium II266303
Celeron A300296
Pentium II233267
Celeron300226
Pentium Pro 256K200220
Celeron266213
Pentium MMX233203
Pentium Pro 256K180197
Pentium Pro 512K166186
Pentium MMX200182
Pentium OverDrive MMX 200200181
Pentium Pro 256K150168
Pentium OverDrive MMX 180180163
Pentium MMX166160
Pentium OverDrive MMX 166166157
Pentium MMX150144
Pentium OverDrive MMX 150150144
align=left rowspan=2Pentium200142
1661271308
Pentium OverDrive1661271308
Pentium OverDrive MMX 150125120
Pentium1501141176
Pentium OverDrive1501141176
Pentium1331111110
Pentium OverDrive1251070
Pentium1201001000
align=left rowspan=2Pentium OverDrive13384970
12075877
align=left rowspan=3Pentium10090815
9081735
7567610
Pentium OverDrive83581
align=left rowspan=2Pentium6657567
6051510
Pentium OverDrive63443
align=left rowspan=2i486 DX4100435
75319
i486 DX266297
i486 DX50249
i486 DX250231
i486 SX250180
i486 DX33166
i486 SX33136
i486 DX25122
align=left rowspan=2i486 SX25100
2078
i386 DX3368
i486 SX1663
i386 DX2549
i386 SL2541
align=left rowspan=3i386 SX2539
2032
1622

See also

References

  1. News: Intel Unveils "iCOMP" Performance Index . . . . 6 . 13 . October 7, 1992 . January 4, 2024.
  2. Web site: iCOMP(R) Index 2.0. faculty.iima.ac.in. live. https://web.archive.org/web/19961220081455/http://www.intel.com/procs/perf/icomp/. 1996-12-20. 2019-12-17.
  3. Web site: Intel(r) Processor Performance Indicators. https://web.archive.org/web/19990225142313/http://www1.intel.com/procs/perf/icomp/index.htm. dead. 1999-02-25. 1999-02-25. 2019-12-17.
  4. Web site: IDEAS Top Performers - Intel iCOMP (Full List) . Ideas International . February 10, 2006 . https://web.archive.org/web/20060116062612/http://www.ideasinternational.com/benchmark/intel/icomp.html . January 16, 2006 . dead .

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