I did not know this was a thing. Typical Noctua coming to the rescue! How do the thermals compare with an AIO cooler? I've heard that their coolers come close

I did not know this was a thing. Typical Noctua coming to the rescue! How do the thermals compare with an AIO cooler? I've heard that their coolers come close to or exceed AIO cooling (assuming a standard Asetek Gen 5) on the usual square sized heat spreaders. Does Threadripper's more rectangular IHS impact temps at all with this cooler? EDIT: Just saw the bit about not having an overclock. Has anyone tried overclocking on this Noctua cooler? What were the results when compared to the AIO solutions?