You really can’t go wrong with either one, just undervolt, and it will cut down on power usage without sacrificing performance.

Here are some out of the box vs out of the box. https://www.techspot.com/review/2657-amd-ryzen-7800x3d/ https://www.techpowerup.com/review/intel-core-i9-14900k/18.html https://www.techpowerup.com/review/intel-core-i7-14700k/18.html

You can see that the 7800x3D trades blows with both i9s and the 5800x3d trades blows with the 12700k and 12900k.

I mean the 7800x3D trades blows with the 13900k, while using 2/3rds the power or even less in some instances.