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Hence, a processor with 64-bit memory addresses can directly access 2 64 bytes (16 exabytes or EB) of byte-addressable memory. With no further qualification, a 64-bit computer architecture generally has integer and addressing registers that are 64 bits wide, allowing direct
Most modern computers have 64-bit processors. Learn how a 64-bit CPU compares to a 32-bit processor, as well as the pros and cons of 64-bit computing.
6 Φεβ 2015 · It can only point to 1 byte at a time, out of that total of 2^64 unique bytes. To process all those 2^64 bytes, you would need 2^64 strokes (not counting all the overhead "strokes" the CPU needs to do).
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The article talks about how the processor can reference (or address) the memory. In all modern architectures memory is byte-addressable, which means that every byte-sized memory cell has a number (its address), which the CPU uses to identify that cell.
Bytes, or multiples thereof, are almost always used to specify the sizes of computer files and the capacity of storage units. Most modern computers and peripheral devices are designed to manipulate data in whole bytes or groups of bytes, rather than individual bits.
Unless computers start using some break-through technologies which do not exist yet even in laboratories, having more than 2 64 addressable space is just not physically possible with current silicon technology.
