This is what MS say about the three figures
Quote:
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Under Physical Memory (MB), Total is the amount of RAM installed on your computer, listed in megabytes (MB). Cached refers to the amount of physical memory used recently for system resources. Free is the amount of memory that is currently unused or does not contain useful information (unlike cached files, which do contain useful information).
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Taken from
here.
Cached + Free do not have to equal Total
---------- Post added at 16:41 ---------- Previous post was at 16:39 ----------
As a more extreme example, on my Vista 32 system I currently have -
Total - 2038
Cached - 1121
Free - 17