The first to third-gen i5s and i7s, for being about as fast as several generations down the line (it wouldn't be until 2017 when AMD would release the first Ryzen processors that Intel would start to clock their processors at their full potential out of the box rather than artificially limiting them). This was most visible in notebooks, where the ultrabook craze would ensure comparable laptops wouldn't reach performance parity until several die shrinks later; this was also true for desktop processors provided you bought the unlocked versions and bumped the multiplier up to the 4-4.5GHz they were all capable of on stock voltages (they'd hit a thermal wall at 4.6-4.7; bumping voltages would cause them to heat to unsustainable levels very quickly).

The same thing is true of the GTX 1080 Ti, a card that 7 years later still has comparable performance to new mainstream GPUs, the upcoming mid-cycle gaming console refreshes, and the Steam Deck.

(This fact isn't lost on nVidia, who would like to have you pay for that next decade of usefulness up front; the reason for identical market prices per quantum of performance of the 3090, 4090, and soon 5090 are that way partially for this reason.)