New
#21
There are 32 bit server versions of Windows that can handle significantly more than 4GB of RAM through PAE:
Physical Address Extension - Wikipedia, the free encyclopedia
The amount of RAM addressable by individual 32 bit applications would still be limited to 2-3 GB, but it would permit multiple applications to be run simultaneously in a larger real system memory.
I have read claims of hacks that permit enabling PAE on some desktop versions of Windows, but I've never tried one.
Seems mostly pointless, given the current availability of 64 bit Win7 and drivers for it.