- What is the max RAM a 32 bit process can access in a 64bit OS? It is 2 gigs or full 4 gigs?
- Is there a way to make it access more maybe by enabling PAE on process level?
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Most applications will only have access to 2Gb when running on WOW64, however if the 32 bit application has the
IMAGE_FILE_LARGE_ADDRESS_AWARE flag set then it will be allocated 4Gb of virtual address space, if it does not then it will only get 2.
See this article for more details.