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Intel's processor history: the path from the Intel 4004 to the Pentium 4

Intel's processor history: the path from the Intel 4004 to the Pentium 4

1999: The Pentium III

Intel Pentium III

The second generation of the Pentium III got the new Coppermine core and was initially still for slot 1 manufactured. It was available from a clock frequency of 600 MHz and was the first processor from Intel to reach the 1 GHz limit about five months after its introduction. But the Coppermine only had half the L2 cache of the Katmai, namely 256KB. This was integrated directly into the CPU core and although the L2 cache was halved, its integration into the CPU core, the resulting shorter signal paths and the increase in bandwidth from 64 to 256 bits, resulted in a performance increase of 13 to 23Percent.

As with the Celeron, switching to a socket was again logical, as this enabled production costs to be reduced . The Pentium III produced afterwards did not differ in terms of features from the slot 1 variant, but was now produced for the 370 socket FC-PGA (Flip Chip Pin Array) and in 0.18 µm technology. At the moment only this FCPGA version is available. From 600 MHz to 1 GHz, it is available in various versions with 100 or 133 MHz front-side bus. However, the fastest version with 100 MHz FSB originally ended at 850 MHz, while the Pentium III with 133 MHz FSB was continued up to 1 GHz. In the meantime, Intel has also brought a version with 1 GHz and 100 MHz FSB onto the market. Intel had to take a 1133 MHz fast Pentium III based on the Coppermine off the market due to stability problems.

On the next page: Continuation: Pentium III

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