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9th November 2010 | 19:20

#13 (permalink)

Mike-Bracknell

Joined: Jan 2008

Posts: 1,133

Likes: 0

From: Bracknell, Berks, UK

Quote:

Originally Posted by MG23

Not sure about 32-bit Windows, but a 32-bit program can use up to 4GB of RAM in 64-bit Windows if you set the 4GB flag on the executable. Of course if the program is badly written then it will crash if you do set the flag.

Comparison of 32-bit and 64-bit memory architecture for 64-bit editions of Windows XP and Windows Server 2003

Check the section "System PTEs". It's 4Gb made up of 2Gb User and 2Gb Kernel.

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