Physical memory 256MB, memory use 756MB, memory load 100%(*2), almostly not move, and system looks to work only for swapping. Physical memory 256MB, memory use 300MB, memory load 100%(*2), too slow, frequently swapping memories. ![]() Physical memory 256MB, memory use 128MB, memory load 50%, comfortable, almost no swapping. Simplified examples for relation between physical memory and memory use and memory load are This memory access on HDD is called 'Memory swap' or 'Page swap' or simply called 'Swap'. By this function, applications can use larger memory than equipped memory on PC, but if application use too large memory than physical (really equipped) memory, operating system need to access HDD more frequently and application speed become slower. Usually operating system(*1) has function named virtual memory, in very simplified explanation, virtual memory function locate the memory on HDD that applications using, and physical memory is used as cache. ![]() This means how much physical memory is used by programs on PC, this value is affected by SAI and all other programs running on Windows now.
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