You can see your system memory status on this display:

The "Memory" tab shows the detailed information on a condition of operative memory of your computer system. Here you can set threshold values of conditions for a memory subsystem.

Physical Memory - main system memory used for operating system and user programs.

Paged Memory - Regions located in kernel space from which memory blocks can be allocated and deallocated dynamically. (Some other systems call this "heap memory.") The memory manager creates two kinds of pools for system use and for use by drivers via Ex (ecutive) Support routine calls: Paged pool is a based region that can be paged in and out of a process's working set.

Virtual Memory - A view of memory that does not necessarily correspond to the underlying physical memory structure. For example, a given range of virtual addresses might be mapped to and backed by some number of discontiguous physical pages, even though the corresponding virtual pages can be accessed as a single, contiguous range.