Unfortunately that also reduces the performance of the Ramdisk from around 2500 MB/s sustained to around 100 MB/s sustained, presumably because of the use of the Windows TCP/IP stack. Still, I do appreciate this is probably a very 'niche' application of a Ramdisk, I'm sure I can find another way aro...

My use of the Ramdisk will amuse you :) I have 3GiB of RAM, Windows idles at about 2.5GiB free most of the time. As such I have disabled the system paging file, as Window's badly written memory management routines will often swap to disk when it is completely unneeded. Some games however (Company of...