[scholia]

> Me as well, I built an i5-2500K system backend 2010(ish), it's still my main home desktop

Good pick: it's still one of the faster chips around. However, it's TDP is 95W, which is fine for a desktop. Since then, Intel has been concentrating on delivering the same (or, often, much less) speed with lower TDP ratings.

These address the market need for thin, high-priced laptops -- preferably without fans -- that you can use in Starbucks.

You could "upgrade" to a new Intel Core i7-6600U that's actually slower than your i5-2500K but has a TDP of only 15W.