"I think it's quite well known that on a 64-bit system, the maximum bit-width
of a virtual address is somewhat lower (commonly 48-bits)." might actually be a perfect example of the Average Framiliarity xkcd[0]. It's perfectly fine to write it that way and the article obviously knows its intended audience. But I'm wondering what percentage of readers here actually knew this beforehand. (I learned it only pretty recently myself. And yes, I should have known this sooner, but ... didn't.)
[0] https://xkcd.com/2501/