Yeah. I think that other CPUs do also have a large chunk of 'dummy' silicon, except it's just the wafer that it's manufactured on the surface of, instead of a s

Yeah. I think that other CPUs do also have a large chunk of 'dummy' silicon, except it's just the wafer that it's manufactured on the surface of, instead of a seperate part that's added after the wafer is ground down to allow for the connections through the back.