I am thinking of buing one of these cpus for my upcoming server and I need some help in deciding which to buy.

As a precursory information, I already have a Noctua NH-L9x65 at hand, so I would like to use it for this project.

I am going to run software such as Nextcloud and Jellyfin and maybe some game servers every now and then.

The processors seem to be quite similiar in performance (same number of P and E cores), but Noctua compatibility centre (https://ncc.noctua.at/coolers/NH-L9x65-19) says the cooler could handle the 12600k better than the 14400 which I find weird, since the 14400 has lower TDP as well as lower base and boost clocks.

I prefer power efficiency over plain power in somewhat similiar products.

Which cpu would suit my needs better do you think?