Ubuntu provides both version 32-bit and 64-bit for downloading on each releases, 32-bit and 64-bit refer to the size (or width) of a chunk of memory or more accurately, the memory registers in a computer’s CPU – this defines how much data the processor can handle in a single operation. More about 32-bit and 64-bit

On a installed Ubuntu, you can check 32-bit or 64-bit by this method:

open up a terminal from the dash home or press Ctrl+Alt+T, execute:

uname -m
  • for 64-bit, it outputs:
    x86_64
  • for 32-bit, it outputs:
    i686