That’s by far when it would make the least sense. What brand of CPU does your PC use? What brand of graphics card? Is it a high-end 4000 GPU or a low-end 4000 that’s equivalent to a high-end 3000? How much RAM? What kind of RAM? PCs (and phones, I guess) are the one category where everything goes through a gradual increase and there are definitely no hard generations.
In PC's the term of generations only really applies as a simple marketing term. For example the Intel Core lineup uses the term of generation to indicate every next release from the first one. The first gen came out in 2008, but even then it's not necessarily perfect since the first gen spun across like 3 years before the next generations became yearly releases.
Nvidia doesn't use the "n-th generation" nomenclature, but instead people refer to their cards by the series number, for example "10 Series" are the Pascal based GPU's released in 2016. And AMD has an even dodgier way of clarifying their Ryzen CPU generations.
However in the PC world no one thinks in terms of generations. Everyone thinks in terms of pure hardware performance, because you can pick and choose specific components and upgrade independently of what you have right now, and in the end the PC platform is backwards compatible in terms of games themselves, and you can still try and run newer games on older hardware where they won't perform as well but they will run.
I think the generation terminology of consoles stems from the bumpy start of the market with the Magnavox Odyssey being the product that has created a market for gaming consoles of the early days. PC gaming only really began in it's rudimentary forms in the 80's, with microcomputers such as Commodore 64, ZX Spectrum and Atari ST. Back in the 80's IBM machines were still seen as very expensive business machines, while that trio was basically the console wars but for the microcomputer world.
By the 90's all those three companies fell off the home computer market, while the IBM XT architecture began to live it's own life when back in the 80's IBM lost a lawsuit where it was legal for other companies to create XT clones as long as they coded their own BIOS, which is what ultimately led to further modernizations by other companies, such as Intel creating the ATX standard, which ultimately led to the current day PC market.
So basically the PC gaming market evolved in a completely different, more gradual way while the console market has stuck to having a few years of gap between new hardware releases, with the console market being significantly older than the PC one, hence the reason why the generation nomenclature makes no sense in the PC world. And no one ever refers to a "generation" of a PC part when talking about PC gaming, it always comes down to pure performance numbers and OS support in these discussions.