Just to get some sense of perspective, the Zen 4-based Ryzen 7950X3D is built on TMSC's 5nm node and is listed[1] as being two 71mm^2 dies. The 5nm node uses a 300mm wafer[2], which means roughly 900 dies or 450 7950X3D's on one wafer, for a total of 8 trillion transistors.
The peak power average of the 7950X3D is roughly 150W[3], which means if you could somehow run all 450 CPUs (900 dies) at peak, they'd consume around 68kW.
edit: I forgot about the IO die which contains the memory controller, so that will suck some power as well. So if we say 50W for that and 50W for the CPU dies, that's 45kW.
That's assuming you get a "clean wafer" with all dies working, not "just" the 80% yield or so.