ICOMP (index)

Various CPUs marked with iCOMP index's.
i486 DX4 75 MHz
iCOMP=319
i486 DX4 100 MHz
iCOMP = 435
Pentium 60 MHz
iCOMP = 510
Pentium 100 MHz
iComp = 815
Pentium 120 MHz
iCOMP = 1000
Pentium 120 MHz
iCOMP 2 = 100
Pentium 133 MHz
iCOMP 2 = 111
Pentium 150 MHz
iCOMP 2 = 114

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.[1]

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 Clock (MHz) iCOMP 3.0 iCOMP 2.0 iCOMP 1.0
Pentium III 1000 3280
933 3100
866 2890
800 2690
750 2540
700 2420
650 2270
Pentium III E 600 2110
Pentium III 600 1930
550 1780
500 1650
450 1500
Pentium II 450 1240 483
400 1130 440
Celeron 400 1011 394
Pentium II OverDrive 333 1001 387
Pentium II 350 1000 386
333 940 366
Pentium II OverDrive 300 351
Celeron 366 890 344
Pentium II 300 332
Celeron 333 318
Pentium II 266 303
Celeron A 300 296
Pentium II 233 267
Celeron 300 226
Pentium Pro 256K 200 220
Celeron 266 213
Pentium MMX 233 203
Pentium Pro 256K 180 197
Pentium Pro 512K 166 186
Pentium MMX 200 182
Pentium OverDrive MMX 200 200 181
Pentium Pro 256K 150 168
Pentium OverDrive MMX 180 180 163
Pentium MMX 166 160
Pentium OverDrive MMX 166 166 157
Pentium MMX 150 144
Pentium OverDrive MMX 150 150 144
Pentium 200 142
166 127 1308
Pentium OverDrive 166 127 1308
Pentium OverDrive MMX 150 125 120
Pentium 150 114 1176
Pentium OverDrive 150 114 1176
Pentium 133 111 1110
Pentium OverDrive 125 1070
Pentium 120 100 1000
Pentium OverDrive 133 84 970
120 75 877
Pentium 100 90 815
90 81 735
75 67 610
Pentium OverDrive 83 581
Pentium 66 57 567
60 51 510
Pentium OverDrive 63 443
i486 DX4 100 435
75 319
i486 DX2 66 297
i486 DX 50 249
i486 DX2 50 231
i486 SX2 50 180
i486 DX 33 166
i486 SX 33 136
i486 DX 25 122
i486 SX 25 100
20 78
i386 DX 33 68
i486 SX 16 63
i386 DX 25 49
i386 SL 25 41
i386 SX 25 39
20 32
16 22

See also

References

  1. ^ a b Michael Slater (October 7, 1992). "Intel Unveils "iCOMP" Performance Index" (PDF). Microprocessor Report. Vol. 6, no. 13. MicroDesign Resources. Retrieved January 4, 2024.
  2. ^ "iCOMP(R) Index 2.0". faculty.iima.ac.in. Archived from the original on 1996-12-20. Retrieved 2019-12-17.
  3. ^ "Intel(r) Processor Performance Indicators". 1999-02-25. Archived from the original on 1999-02-25. Retrieved 2019-12-17.
  4. ^ "IDEAS Top Performers - Intel iCOMP (Full List)". Ideas International. Archived from the original on January 16, 2006. Retrieved February 10, 2006.


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