When I got my first PC in 1994 (30 years ago!) I had to choose between Intel or AMD for the CPU. I chose AMD because their Am486 DX-40 CPU was both faster than the 33 MHz Intel equivalent, and cheaper. Win-win!
It served me well for several years.
Around the same time, a friend of mine, flush with money earned by working on the railroad (all the live long day) also got his own PC, but because he was Mr. Moneypants, he got a tricked out Intel 486 CPU running at 66 MHz.
We both had the game Crusader: No Remorse, which came out in 1995 and remains one of my favourite PC games of all time, despite having a shall we say, somewhat inelegant control scheme.
You can’t see any in the screenshot below, but if you look at the flashing red light on the wall, it’s about the same size as fans you would see spinning away in the game, as fans do. And this is where I saw that 26 MHz could make a big difference–on my friend’s PC, the fans spun smoothly. On mine, they hitched, like the wiring in them was funky or something. It made me a bit sad, and a little jealous.
Today, 26 MHz is about as relevant to CPUs as the first horseless carriages are to today’s electric vehicles, but back in the 1990s every new processor (save budget models) brought significant, noticeable speed boosts. It was in that environment that tech sites like AnandTech flourished, and I can see why it and other similar sites are dying off now–today, most people buy laptops and just deal with whatever it has when it comes to gaming (unless they are hardcore enough to seek out gaming laptops), or you have the enthusiast/gamer market where people aren’t looking for all-around good systems, but ones that can excel at playing very demanding games, cost oodles of money and have enough lights on them to be seen from space.
But yeah, for a time, if you wanted smoothly spinning fans in your games, a couple of hundred dollars more could buy you that.