This program will automatically free up RAM when available memory reaches your preset level. The strip chart shows three lines representing CPU usage, Available Harddrive and Available Memory. Memory Sentinel Pro can also show available bytes for 1 to 6 harddrives. The CPU usage fingerprint is very small. When minimized, the pie chart shows % of available memory. Set the slider to 5% or 10%! 30 day trial. Windows XP.