In computer architecture, 64-bit integers, memory addresses, or other data units are those that are 64 bits wide. Also, 64-bit central processing units (CPU) and arithmetic logic units (ALU) are those that are based on See more

Processor registers are typically divided into several groups: integer, floating-point, single instruction, multiple data (SIMD), control, and often … See more

In principle, a 64-bit microprocessor can address 16 EiB (16 × 1024 = 2 = 18,446,744,073,709,551,616 bytes, or about 18.4 exabytes) of memory. However, not all … See more

In 32-bit programs, pointers and data types such as integers generally have the same length. This is not necessarily true on 64-bit machines. … See more

Many computer instruction sets are designed so that a single integer register can store the memory address to any location in the computer's physical or virtual memory See more

32-bit vs 64-bit
A change from a 32-bit to a 64-bit architecture is a fundamental alteration, as most See more

As of August 2023 , 64-bit architectures for which processors are being manufactured include:
• The … See more