eBoostr is really for people with old computers using XP. It helps me because I am about to scrap my old PC with its old hardware. You can use up to 4 pendrives but do select for speed. You also need USB2 ports it will not work with USB1. The list price for a stick is about the same as real RAM but there are sales and special offers so if you decide to use eBoostr, look for pendrive bargains. Yes, you do have to do a restart after 4 hours but that does not take long. With Vista, it is different, you plug in, select to use as RAM and start using.