How to determine the maximum capacity of virtual memory in a computer system
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Determined by the CPU address length. When the address length of CPU is much larger than the external memory capacity, the actual capacity of virtual memory is the sum of memory and external memory capacity; when the external memory capacity is much larger than the size of CPU word length, the actual capacity of virtual memory is determined by CPU word length. In general, the size represented by the CPU address length is larger than the out-of-memory capacity.
The maximum capacity of a computer system's virtual memory is determined by the "CPU address length".
Virtual memory is a technology of memory management in computer system. It makes the application think that it has continuous available memory (a contiguous and complete address space), when in fact, it is usually separated into multiple physical memory fragments, and some are temporarily stored on external disk storage. exchange data when needed.
The actual capacity of virtual memory is determined by the address length of CPU and the capacity of external memory. When the address length of CPU is much larger than the capacity of external memory, the actual capacity of virtual memory is the sum of memory and external memory capacity; when the capacity of external memory is much larger than that of CPU word length, the actual capacity of virtual memory is determined by CPU word length.
In general, the address length of CPU is larger than the capacity of external memory.
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