Life for computer nerds used to be easy. In terms of Intel CPUs, there was the 8088, followed by the 80286, followed by the 30836.
When Intel added complexity, we could still cope: the little-used 8086, the required-for-AutoCAD 8087 math chip, the DX and SX flavours of the 386, and then the Pentium, III, III, and 4. It was around the time of the Pentium 4 that I build my last computer, because that 2.4GHz one is the one I still run today, 7 years later.
Since then, Intel and AMD have thoroughly confused the market with Celeron this and Amperon that. I have little idea what kind of CPUs are in the current crop of 5 notebook computers in our household, other than that most of them sport an AMD sticker.