###User Defined Function###
_WinAPI_GetPhysicallyInstalledSystemMemory

###Description###
Retrieves the amount of RAM that is physically installed on the computer.

###Syntax###
#include <WinAPISys.au3>
_WinAPI_GetPhysicallyInstalledSystemMemory (  )


###Parameters###
None

###ReturnValue###
@@ReturnTable@@
Success 	The amount of physically installed RAM, in kilobytes.
Failure 	0, call <a href="_WinAPI_GetLastError.htm">_WinAPI_GetLastError()</a> to get extended error information.
@@End@@


###Remarks###
The amount of memory available to the operating system can be less than the amount of memory physically installed in the computer because the BIOS and some drivers may reserve memory as I/O regions for memory-mapped devices, making the memory unavailable to the operating system and applications.

This function requires <strong>Windows Vista SP1 or later</strong>.


###Related###


###See Also###
@@MsdnLink@@ GetPhysicallyInstalledSystemMemory
