1Ghz pentium: Intel Pentium III 1GHz

The Pentium III Hits 1 GHz — Intel’s 15 Most Unforgettable x86 CPUs

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The Pentium III Coppermine was the first commercial x86 processor from Intel to attain a clock speed of 1 GHz; a 1.13 GHz version was even released, but was quickly taken off the market because it was unstable. This new version of the Pentium III improved the Level 2 cache—now on-die. It was faster than the 512 KB external cache on the first model and was touted as a feature able to speed up the Internet experience. It was released in three versions: server (Xeon), entry-level (Celeron), and mobile (with the first version of SpeedStep).

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Code name Coppermine
Date released 1999
Architecture 32 bits
Data bus 64 bits
Address bus 32 bits
Maximum memory 4 GB
L1 cache 16 KB + 16 KB
L2 cache internal, 256 KB (CPU frequency)
Clock frequency 500–1,133 MHz
FSB 100-133 MHz
FPU built in
SIMD MMX (SSE)
Fabrication process 180 nm
Number of transistors 28. 1 million
Power consumption 25-35 W
Voltage 1.6 V, 1.8 V
Die surface area 106 mm²
Connector Slot 1-Socket 370 FCPGA

A slightly improved version (Tualatin), with more L2 cache (512 KB) and centering on a 130 nm process, was released in 2002. Essentially intended for servers (PIII-S) and mobile devices, it was less common in consumer-level machines.

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Intel launches 1GHz mobile pentium III

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