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operating systems support PAE so long as the hardware does, Windows needs this boot option enabled manually because many device drivers are incompatible with PAE. This is known as 4-gigabyte tuning (4GT), or the
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switch. Once enabled, executables can have the "large address aware" flag set to increase their memory limit to 3 GB. 32-bit processes on
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are also limited to 2 GB. However, they can use the "large address aware" flag as well, except that it doesn't require the
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refers to a physical memory barrier for a process running on a 32-bit operating system, which can only use a maximum of 2
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will be limited to this number, thus the number of possible memory locations that can be addressed is limited to exactly 2
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220:"FTPing Files Greater than 2Gb from Microsoft Windows 2003 Server to OS/400 or i5/OS"
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245:"2.3.23-pre4 x86 64 GB RAM changes [HIGHMEM patch] explained a bit"
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Physical memory barrier for a process running on a 32-bit operating system
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286:"Memory Limits for Windows and Windows Server Releases"
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142:"Overcoming the Windows 2GB Caching Limit"
51:. The use of Physical Address Extension (
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27:of memory. The problem mainly affects
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266:"Chapter 4. Hardware Compatibility"
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140:Richardson, Mike (2014-07-24).
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68:architecture
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31:versions of
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127:References
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Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.