Models

Models

The earliest Pentiums were released at the clock speeds of 66 MHz and 60 MHz. Later on 75, 90, 100, 120, 133, 150, 166, 200, and 233 MHz versions gradually became available. 266 and 300 MHz versions were later released for mobile computing. Pentium OverDrive processors were released at speeds of 63 and 83 MHz as an upgrade option for older 486-class computers.

Pentium 66 MHz and 60 MHz chips contained 3.1 million transistors.





Code name P5 P54C P54CS P55C Tillamook
Product code 80500/ 80501 80502 80503
Process size (µm) 0.80 0.60 or 0.35* 0.35 0.35 (later 0.28) 0.25
Package CPGA CPGA/TCP* CPGA/PPGA/TCP* CPGA/PPGA/TCP* TCP/TCP on MMC-1
Clock speed (MHz) 60 66 75 90 100 120 133 150 166 200 120* 133* 150* 166 200 233 200 233 266 300
Bus speed (MHz) 60 66 50 60 66 60 66 60 66 60 66 60 66
Voltage 5.0 5.0 3.3 / 2,9* 3.3 / 2.9* 3.3 / 3.1* / 2.9* 3.3 / 3.1* / 2.9* 3.3 / 3.1* / 2.9* 3.3 / 3.1* / 2.9* 3.3 3.3 2.8 2.45 2.45 2.8 2.8 2.8 1.8 1.8 1.8 1.8
Introduced 22 March 1993 10 October 1994 7 March 1994 27 March 1995 June 1995 4 January 1996 10 June 1996 27 March 1995 - 1 November 1995 8 January 1997 2 June 1997 August 1997 January 1998 January 1999

* These were only available as Mobile Pentium or Mobile Pentium MMX chips for laptops.
Pentium MMX Overdrive Code name P54CTB
Product code PODPMT60X150 PODPMT66X166 PODPMT60X180 PODPMT66X200
Process size (µm) 0.35
Socket Socket 5/7
Package CPGA with heatsink, fan and voltage regulator
Clock speed (MHz) 125 150 166 150 180 200
Bus speed (MHz) 50 60 66 50 60 66
Upgrade for Pentium 75 Pentium 90 Pentium 100 and 133 Pentium 75 Pentium Pentium 90, 120 and 150 Pentium 100, 133 and 166
TDP (max. W) 15,6 15,6 15,6 18
Voltage 3,3 3,3 3,3 3,3
Embedded versions of Pentium MMX Code name P55C Tillamook
Product code FV8050366200 FV8050366233 FV80503CSM66166 GC80503CSM66166 GC80503CS166EXT FV80503CSM66266 GC80503CSM66266
Process size (µm) 0.35 0.25
Clock speed (MHz) 200 233 166 166 166 266 266
Bus speed (MHz) 66 66 66 66 66 66 66
Package PPGA PPGA PPGA BGA BGA PPGA BGA
TDP (max. W) 15,7 17 4.5 4.1 4.1 7.6 7.6
Voltage 2.8 2.8 1.9 1.8 1.8 1.9 2.0

P5, P54C, P54CS
Intel Pentium microarchitecture.

The original Pentium microprocessor had the internal code name P5 and the product code 80501 (80500 for the earliest steppings). This was a pipelined in-order superscalar microprocessor, produced using a 0.8 µm process. It was followed by the P54C (80502), built on a 0.6 µm process and employing an internal clock multiplier to let the internal circuitry work at a higher frequency than the external bus (as it is much more cumbersome to increase the bus frequency). It was also dual-processor ready. The P54C was followed by the P54CS, built on a 0.35 µm process.