Address lines are not the same as data lines. Your original post mentioned “math”, which, to me, implied data, not addresses. Processors absolutely can do 64 bi

Address lines are not the same as data lines. Your original post mentioned “math”, which, to me, implied data, not addresses. Processors absolutely can do 64 bit math (integer and floating point; some can even do multiple at a time), but you are correct that 64 physical address line processors don’t exist…yet. It is entirely possible we’ll see servers with that many sometime in the next few decades.