I realize this is a newbieish question, but I was curious after a discussion on USENET with someone who keeps insisting that a 128-bit processor is 4x faster than a 32-bit one at the same clock speed.

There are no 128-bit CPUs on the market and there may never be because there is no practical reason for doubling the basic register size. One of the reasons for migrating from 32-bit to 64-bit ...

The mobile chipmaker says 128-bit processors might have a place in mobile devices in years to come, but for now, 64 bits is all we need. CNET contributor Don Reisinger is a technology columnist ...