Comment Re:Reviving the bit wars? (Score 5, Informative) 773
The increased address space is not the important part of the ARMv8 64-bit architecture in this case.
Instead it has twice the number of general purpose registers (31) with twice the size (64 bit) than that of the previous ARMv7 architecture. It also has 32 x 128 bit vector registers, which again is doubled. This allows for more data being processed at the same time, and also saves a bit on memory accesses, which are horribly slow. There are also other improvements such as built in AES encrypting and SHA hashing instructions.