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8GB RAM only shows as 4GB on Server

The user has an app that said it would run better with 8GB vs. the 4GB they had.  They have an IBM 4363EBU, which is supposed to accept up to 8GB RAM.  I purchased the correct type of RAM and installed it, and now when I look at the BIOS system info, it does show 8GB.  It also checks the 8192MB RAM during startup.

But once logged into their Win Server 2003 R2 system, if I go to computer "properties", it shows this near the bottom of the screen:

1.87Ghz, 4.00GB of RAM
Physical Address Extension

Why is it showing only 4GB?  Is this is a constraint in Win 2003 Server, where it does not recognize or utilize more than 4GB?  Or, does it just display the wrong info...or what is really going on here?  TIA
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sasllc
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sasllc
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2 Solutions
 
Alan HardistyCo-OwnerCommented:
Unless the server is running a 64-bit version of the OS, then it will only be able to see and use 4Gb of RAM irrespective of how much RAM is installed in the server.

32-Bit servers can only address 4Gb of memory max.

Alan
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pgm554Commented:
Unless the OS is 64 bit ,you will not see the extra ram in the properties.

Some apps will use something called PAE

http://en.wikipedia.org/wiki/Physical_Address_Extension

to use the extra memory,but the app needs to be written to use that memory.
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