CPUs that process 64 bits as a single unit, compared to 8, 16 or 32. Today's desktop and laptop computers are mostly 64-bit machines; however, there are countless 32-bit, 16-bit and 8-bit ...

I've waited quite some time to take a look at x86-64, because I wasn't too enthused about it when it was first announced. But the more I've read about it, the more I've come around, and at this point ...