Source: The Korea Herald
quote: As a recap, there are 3 parts of a modern CPU: General registers, address pointers, and data bus. In actuality, there is a few more, including external address bus. A 128-bit CPU typically refers to the first one of those, using 128-bit general registers. It would not be inconceivable, and actually highly likely that the external address bus of any 128-bit ARM would still remain 64-bit (or even less... perhaps even 36 or 40-bit), and yet it could have a significant on its speed for many different types of operations, including networking, video processing, and cryptography.