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. 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 implemented 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. For Version 3.0 (1999) it was Pentium II at 350 MHz.
+Intel iCOMP (Full List)CPU NameClock (MHz)iCOMP 3.0iCOMP 2.0iCOMP 1.0Pentium III10003280 9333100 8662890 8002690 7502540 7002420 6502270 Pentium III E6002110 Pentium III6001930 5501780 5001650 4501500 Pentium II4501240483 4001130440 Celeron4001011394Pentium II OverDrive3331001387 Pentium II3501000386 333940366 Pentium II OverDrive300 351Celeron366890344Pentium II300 332 Celeron333 318 Pentium II266 303 Celeron A300 296 Pentium II233 267 Celeron300 226 Pentium Pro 256K200 220 Celeron266 213 Pentium MMX233 203 Pentium Pro 256K180 197 Pentium Pro 512K166 186Pentium MMX200 182 Pentium OverDrive MMX 200200 181 Pentium Pro 256K150 168 Pentium OverDrive MMX 180180 163 Pentium MMX166 160Pentium OverDrive MMX 166166 157Pentium MMX150 144 Pentium OverDrive MMX 150150 144Pentium200 142 166 1271308Pentium OverDrive166 1271308Pentium OverDrive MMX 150125 120Pentium150 1141176Pentium OverDrive150 1141176Pentium133 1111110Pentium OverDrive125 1070Pentium120 1001000Pentium OverDrive133 84970120 75877Pentium100 9081590 81735Intel Corporation, "PC Corner: New Voltage Reduction Technology Heightens Intel Pentium Processor Mobile Advantage", Solutions OEM, Volume 2, Number 3, August 1995, Order Number: 297505-005, page 675 67610Pentium OverDrive83 581Pentium66 57567Rant, Jon, "Pentium Processor: Previewing Desktop Computing's Next Step", Intel Corporation, Microcomputer Solutions, March/April 1993, page 1Hodson, Gerri, "Anatomy of Intel's Pentium Processor", Intel Corporation, Solutions, May/June 1993, Page 960 51510Pentium OverDrive63 443i486 DX4100 43575 319i486 DX266 297i486 DX50 249i486 DX250 231Intel Corporation, "Focus: Highest Performance 3.3-Volt, Intel486 Processor", Intel Solutions, December 1993, page 22i486 OD-2550 231Chen, Allan, Editor; Hodson Gerri, Associate Editor, "Intelperspectives: Intel's Newsletter for MIS Professionals, Volume 2, Number 1", Intel Corporation, Microcomputer Solutions, January/February 1993. page 11i486 SX250 180i486 DX33 166i486 OD-2040 166Chen, Allan, Editor; Hodson Gerri, Associate Editor, "Intelperspectives: Intel's Newsletter for MIS Professionals, Volume 2, Number 1", Intel Corporation, Microcomputer Solutions, January/February 1993. page 11i486 SX33 136i486 OD-2033 132Chen, Allan, Editor; Hodson Gerri, Associate Editor, "Intelperspectives: Intel's Newsletter for MIS Professionals, Volume 2, Number 1", Intel Corporation, Microcomputer Solutions, January/February 1993. page 11i486 DX25 122i486 SX25 10020 78i386 DX33 68i486 SX16 63i386 DX25 49i386 SL25 41i386 SX25 3920 3216 22
See also PR rating
References