The optimizer does add physical RAM. Instead, it invokes Windows internal APIs:
If you're looking for alternative memory optimizers, here are some options: Portable Wise Memory Optimizer
Load this tool onto a 128MB USB drive (or even a floppy disk, theoretically). Use it on your home PC, work laptop, gaming rig at a friend's house, or an old repair bench computer. It remembers no settings except the config file saved in its own folder. The optimizer does add physical RAM
Because it is portable, you can run it via batch script or Task Scheduler. For example: gaming rig at a friend's house
It does not leave traces or configuration files in the Windows registry, keeping the host system "clean".