Some Samsung fans are still reeling over the processor gap between the Snapdragon and Exynos variants of the Galaxy S20 so it isn’t surprising when people immediately jumped on the news about the Galaxy Note 20’s cooling systems. When iFixit confirmed that a number of models are using graphene instead of the much-touted copper vapor cooling chamber, people immediately got worried about overheating problems and discrepancies in Samsung’s latest flagship. iFixit is now setting the record straight to calm everyone, explaining that there shouldn’t be any need to worry, at least without further scientific evidence.

iFixit makes it clear that there isn’t any correlation between the cooling system used and the processor inside. 
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https://www.slashgear.com/galaxy-note-20s-different-cooling-systems-is-not-a-problem-says-ifixit-26635270/