The nonk 6

Description: Some people argue that memory optimizers aren't needed anymore. "But CleanMem seems to work and it helps you automatically recover memory and file cache space to improve performance. The program will install and run every 30 min via the windows task scheduler. It doesn't run in the background constantly."
Just extract the ZIP download file to a folder of your choice and click "schtasks.exe" for it to run automatically by the task scheduler, but don't use either of the BAT files since they aren't needed in the portable version and they install files to c:\windows\system32.