by MarkFlax - 4/30/12 11:38 AM
In Reply to: Clarification by JFCreally
System Idle is just a representation of the system when the user has nothing open or running. In fact the system isn't idle, as the processor(s) is/are always working in the background, housekeeping,maintenance, and so on.
And about memory usage. As you open/run programs, the data for that gets loaded into memory for quicker access. When you close down that software, the memory doesn't clear immediately. On smaller RAM machines memory will be over-written as and when the CPU needs it, but on higher RAM systems, the CPU doesn't need to do this.
A good test is this. Open any application first thing after Windows loads and make a note of the time it takes to fully open. Then use it, then close it down.
Later on, open the same application. Does it open quicker? if so that is because it is still held in RAM, (memory).
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