It would be helpful if you could allow all partitions or hard drives as 'Cache file location' when a 'System Memory' cache is created. At the moment I can only select the hard drive where Windows is installed.
I found with eBoostr 3 that boot time is shortened significantly when a 2 GB eBoostr cache file is loaded form a non-system hard disk.
my system: Win7 64bit RC, 3 x Samsung 1GB HDD, 6 GB RAM, 2 GB eBoostr System Memory cache