Intel’s Core i9-10900K processor is now on sale, and the new Comet Lake 10-core flagship has already been overclocked to 7.7GHz, outdoing the 9900K’s record overclock.

That’s a mind-boggling speed, naturally, but not one that the average punter will even be able to think about achieving with simple air or liquid cooling, given that Elmor – who is the in-house overclocking expert for Asus – used liquid helium cooling to drive to 7.7GHz (7703MHz) across all 10 of this CPU’s cores.
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https://www.techradar.com/news/core-i9-10900k-hits-new-highs-for-intel-with-amazing-77ghz-overclock-and-world-record-ram-speeds