Noted hardware historian and reverse-engineer Ken Shirriff recently found the exact transistors in the original Intel Pentium which caused the "FDIV bug", leading to a $475 million recall in 1994.

Shirriff has posted images of the rug (via Techspot ... to be able to identify it as the 1994 "P54C" revision of the OG P5 ...

Intel's top Pentium chip, introduced in late 2000. The successor to the Pentium III, the Pentium 4 features the NetBurst micro-architecture (see NetBurst). All Pentium 4 chips are single core ...

Case in point an original (P54C) Intel Pentium, which [Ken Shirriff] took an in-depth look at. Using a by now almost unimaginably large 600 nm process, the individual elements of these standard ...

This feature allows the Pentium’s FPU to be about 2-3 times ... SSE, and today’s AVX extensions began. Featured image: A diagram of the constant ROM and supporting circuitry.