Windows 7 memory usage

Posted by lydonchandra on Super User See other posts from Super User or by lydonchandra
Published on 2010-06-17T08:23:27Z Indexed on 2010/06/17 8:24 UTC
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windows-7

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memory

Physical memory(MB) for Windows 7

Total 4021
Cached 1113
Available 768
Free 174
Memory used 3.25GB

At this point, windows7 asks me to close some programs because "system memory is low". From my understanding reading articles, I still have 768 MB free memory, why does windows7 complain?

Also what does Cached memory refer to? Is this part of memory that Windows7 reserved for itself meaning it's free to use by Windows7 (and means I have about 768 + 1113 MB of free mem?)?

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