It depends on what you’re concerned about.

Do you need to upgrade your power supply for Nvidia’s GeForce RTX 3080 graphics card? That’s a concern many people have, but it’s actually two concerns clumped into one.

First, people fear they’ll need a new PSU to handle the new 12-pin connector on Nvidia’s own RTX 3080 Founders Edition. Second, the RTX 3080 pulls more wattage than even the prior-gen RTX 2080 Ti flagship.
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https://www.pcworld.com/article/3575494/do-you-need-a-new-power-supply-for-nvidias-geforce-rtx-3080.html