It usually doesn't matter, but there are two possible downsides of 64bit: - Every pointer becomes twice as big (8 bytes vs 4 bytes). - Potentially less data f

It usually doesn't matter, but there are two possible downsides of 64bit: - Every pointer becomes twice as big (8 bytes vs 4 bytes). - Potentially less data fits in the CPU cache lines, because the data is bigger. One thing I wonder if the 32 bit edition mostly exists for small VM's?