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ssj12 said:
http://forums.whirlpool.net.au/forum-replies-archive.cfm/751325.html here is one

 

That says what I have been thinking all along. 32-bit OS will address a full 4GB of physical memory including other memory you have in your PC besides RAM. So I start with 4GB, minus the 512MB from the Video card, and then say minus another 512MB for the rest of the stuff. That leaves the OS able to recognize 3GB of RAM but that doesn't happen and I don't know what is taking up another 512MB of memory.