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Tom’s Hardware
Tom’s Hardware
Technology
Matthew Connatser

It’s been 30 years since Intel’s infamous Pentium FDIV bug reared its ugly head – a math bug caused Intel’s first CPU recall

Intel Pentium 200 MHz.

2024 marks the 30th anniversary of Intel's announcement of a math glitch on some of its Pentium CPUs (via Heise).

In 1993, Intel launched its first generation Pentium CPUs, which used the new P5 architecture (hence Pentium) and succeeded the older Intel 486 from 1989. The new chip boasted the first-ever superscalar design, branch prediction, and a faster-floating point unit (FPU) that would help speed up doing math involving floating point numbers, basically those with a decimal point.

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