TechSpot published 2nd-Gen Core i7 vs. 8th-Gen Core i7
A quote from the article:
Today we're dusting off our old Sandy Bridge Core i7-2600K test system and pairing it up with a GTX 1080 Ti to see how well the seven-year-old processor holds up in the latest and greatest PC games compared to Intel's new Core i7-8700K. We know that the 2600K still has some fight left in it, but next year could finally be time for those equipped with the aging quad-core to make their long-awaited upgrade.2nd-Gen Core i7 vs. 8th-Gen Core i7 @ TechSpot
By the end of 2018, the GTX 1080 Ti is likely to be ousted by an even faster flagship GPU and as a result mid-range GPUs are expected to be speedie as well, which is likely to require more processing power than the 2600K can provide.