- The native word size of a processor (e.g. 64-bit) is nearly always
linked to the width of the data/address bus
- E.g. how much information can be transmitted at once
- A 32-bit processor will, for example, have a 32-bit address bus
which can only reference 4 billion unique memory addresses (2^32^ =
4,294,967,296)
- This is why 32-bit processors were limited in how much RAM you could install