The Pentium processor's 18th birthday

We chart the ups and downs of Intel's best-loved processor

The Pentium II, using the same architecture as the Pro but with a different cache arrangement that was cheaper, appeared on store shelves and in systems from the middle of 1997. The processor was slot-based rather than socketed — confusing the hell out of this particular writer. The Pentium II was the first processor where easily changeable cache sizes meant processors could be tailored to different market segments and price-points.

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