Comment by hengheng

I was tempted to do that with my first-gen Intel MacBook because it just wouldn't run quiet when idle, that is until I discovered by how much I could undervolt that chip with a random tool that I could just download. I believe I went from 1.26V to 1.03V, or at least these are the numbers still etched into my brain.

Ratio of the squares of those numbers is 2/3, and so the laptop was certainly quiet without having to open it up. But I was surprised at Intel's product back then.