http://kevin.vanzonneveld.net/techblog/article/create_turbocharged_storage_using_tmpfs/
/dev/shm
Windows RAM disk:
http://www.mydigitallife.info/2007/05/27/free-ramdisk-for-windows-vista-xp-2000-and-2003-server/
http://support.microsoft.com/kb/257405
http://www.picobay.com/projects/2006/06/how-to-make-windows-xp-ram-disk-drive.html
firefox
about:config
added
browser.cache.disk.parent_directory
point to /dev/shm/firefox_cache
increased cache size to 15 Mb from 5 Mb