I build art using an M1 Ultra with 20 cores. Many times a day, I have all cores running for 5-20 seconds at a time. I have also never heard a fan running in my Mac Studio. Having a single core that runs at a crazy speed but is cooled by some crazy cooling fluid will not make much difference to me. I can see a single-thread game being helped by these processors, however. I can't see anyone being silly enough to run these in a datacenter all day long unless you build it in space.