Intel Pentium III

The Intel Pentium III is the successor to the Pentium II. It was released in 1999 and essentially adds the SSE instruction set and increases the frequency.

They were firstly available as 450 MHz parts, then parts up to 1.4 GHz were released. The Pentium IIIs were firstly packaged in the form of cartridges like Pentium IIs, which were also normally inserted in the Slot 1. Then, Intel reverted back to socketed processors and the Pentium IIIs were inserted in the Socket 370.

There were three Pentium III generations. The first one are Katmai Pentium IIIs, manufactured with a 250 nm process and packaged in the form of Slot 1 cartridges on Desktop. It was followed by Coppermine Pentium IIIs made with a 180 nm process and for the Socket 370, and finally the 130 nm Tualatins, which were also inserted in the same socket, but required a new generation of motherboards. They could still be run on older ones with adapters or mods.

Slotkets could be used to run Socket 370 Processors on Slot 1 Motherboads.

Intel Pentium III 450 MHz Katmai Intel Mobile Pentium III 500 MHz Katmai
Intel Pentium III 500 MHz Coppermine Intel Pentium III 1 GHz Coppermine Intel Pentium III 1.4 GHz Tualatin
  • A 450 MHz Pentium III (SL364, Katmai). Back, Top. Malaysia, 1999 Week 12.
  • A 500 MHz Mobile Pentium III (SL3DW, Katmai). Bottom. 1999 Week 39.
  • A 500 MHz Pentium III (SL3Q9, Coppermine). Bottom. Malaysia, 1999 Week 52.
  • A 1 GHz Pentium III (SL52R, Coppermine). Bottom. Costa Rica, 2001 Week 4.
  • A 1.4 GHz Pentium III (SL5XL, Tualatin). Bottom. Malaysia, 2002 Week 26.
Intel Coppermine Dice
  • Two Coppermine Dice.

The Pentium III is suceeded by the Pentium 4 released in 2000, and technically wise by the Pentium M in 2003.

Operating System Support