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Core i9-14900KS overclocked to 9.1 GHz, breaking numerous world records
(www.tomshardware.com)
This is a most excellent place for technology news and articles.
Games are optimized for multiple cores to a much higher degree than they used to. Single core games are uncommon, even on the indie scene.
They were held back for a long time by console hardware, but that's not a problem anymore.