Use more than 3GB in NT5 32bit using "Non-Addressable" RAM.

"The following freeware RRamdisk.sys, originally written by Gavotte based on Microsoft’s Ramdisk.sys, and later being added a GUI interface by lyh728 is not only free to use, it also stable, doesn’t have size limitation, supports popular FAT16/FAT32, NTFS filesystems, and supports Windows 2000 operating system and above including Vista."

"Using the version of Gavotte RAMDisk you mention, I was able to load a RAMDISK using what I believe is RAM between 3GB and 4GB on my system, but without using the ForceEnable option on PAE with bcdedit. Given that PAE is supposed to be for addressing memory above 4GB on 32-bit systems, this does make sense, and since I only have 4GB of RAM, it doesn't make sense to have PAE enabled when it may result in a performance loss. It seems that the only thing required for Gavotte RAMDisk to use the 3GB+ memory is having the UsePAE option enabled in the registry. I tried changing this value to zero (disabled) and after reboot saw a 512MB (as was the setting in RAMDisk) - and noticed about the same amount being deducted from my system's available memory (as would be expected if it wasn't using the RAM above 3GB).

Also, regarding PageFile setings, I think it makes more sense to set a low initial size for the RAMdisk, such as the 16MB minimum, and a maximum size of 1000MB or similar. I think the practice of having a fixed-size paging file stems from trying to avoid fragmentation of the file on the hard disk due to its growth, but since this is a pagefile in RAM, fragmentation shouldn't be really be an issue. This also allows you to use the RAMdisk for other purposes, such as temp file storage."

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"Granted, it's gross overkill but now I can make use of most of my 16 GB in XP. I left about half a gig free on the ramdisk for temp files, browser cache, and so forth. "