Even with a very intense overclock, Sandy Bridge is starting to fall behind the pack in gaming. Not obsolete by any means but 5 years of even incremental IPC gains do add up, and Sandy Bridge is still running PCIe 2.0. The 2500k is starting to come out 30-50% behind the 7600K in many titles let alone a 7700K, which is a very perceptible difference.
For "work" workloads, Sandy Bridge is still quite potent though. Honestly in that segment the gains have mostly been coming from moving to more cores. A hexacore or octacore with hyperthreading/SMT knocks the stuffing out of an i5.
Yep. It was that reason that i upgraded from the 2600k. My entire workspace is virtual machines. The 2600k started falling down there. Vmware without hyperthreading is kinda non optimal. Sub normal. Frfrrl. Everything else, it is still a cracking pc.
http://www.gamersnexus.net/guides/2773-intel-i5-2500k-revisi...
http://www.eurogamer.net/articles/digitalfoundry-2016-is-it-...
For "work" workloads, Sandy Bridge is still quite potent though. Honestly in that segment the gains have mostly been coming from moving to more cores. A hexacore or octacore with hyperthreading/SMT knocks the stuffing out of an i5.