:) I can confirm, this is my CPU atm. i bought an i5 2500k in 2013 and upgraded to a i7 2600k for 20$ 5 years ago..8 threads make a huge difference from 4 threads, but apart from that, the i7 2600k is flying still. I had it OC to 4.5G, atm it's only 4.0G and working fine, T around 65C, I pair it with an MSI GTX1060 6GB Gaming X OC at 2GHz and DDR5@4x2250, hyper stable. It's a perfect match bw GPU and CPU + 16GB DDR3 1866 and a triple monitor setup 1080p. Do I need a faster CPU? No. A faster GPU ? No, 60-100fps in most games. The only thing I would like is M.2 SSD interface instead of SATA. Apart from that it's utterly stupid to spend $$$ on a new system for a 10-20% gain.
Ah and I disable Spectre and Meltdown mitigations ;-) it's a stupid fix for system servers, no risk on a personal machine and that's 6% or so extra speed (measured it eons ago...) :p