If the system becomes unstable you may have to bump up the processor voltage (which involves another piece of wire). In the article, Dan Zhang is able to take a 1.8GHz Pentium M to 2.4GHz.

Ken Shirriff] has been sharing a really low-level look at Intel’s Pentium (1993) processor. The Pentium’s architecture was highly innovative in many ways, and one of [Ken]’s ...