Intel just revealed its new Comet Lake-H processors for laptops, and the beefy flagship model is the Core i9-10980HK, which is capable of boosting up to 5.3GHz – but some new purported details on the power draw of the CPU cast further doubt on how often such peak speeds might be hit realistically in real-world usage, and the effect this chip might have on battery longevity.

In other words, the power consumption and thermals around the new flagship Core i9 could mean that it’ll struggle to hit peak speeds for any meaningful time in anything but the biggest and heftiest gaming laptops, which can fit in seriously chunky cooling solutions (or indeed batteries).
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https://www.techradar.com/news/intels-core-i9-10980hk-can-hit-53ghz-but-will-it-be-more-of-a-battery-killer-than-a-performance-king