What is 64-bit computing?

64-bit refers to the bits number that can be processed or transmitted in parallel, or bits number used for single element in a data format. While 64-bit computing is the use of processors that have datapath widths, integer size, and memory addresses of 64 bits wide. A 64-bit register can store 264 different values and a processor with 64-bit memory addresses can directly access 264 bytes of memory. A 64-bit CPU can handle much more memory and larger files than a 32-bit CPU. 32-bit computer systems can only hold up to 4GB of RAM while 64-bit computer systems can hold up to 1000GB of memory. So 64-bit desktop systems keep ahead of 32-bit desktop systems in many aspects, especially for larger storage capacity and higher performance speed.

Updated : Jul 29, 2021.