I tried this when I was using my older laptop to eek out everybit of performance so I could run world of tanks at a decent frame rate, I could only get it to load once and I ran my game for about 10 minutes before crashing. I did find a good game booster that did work though. It is/was called WISE game booster. It actually did work, on average it would free up anywhere from ~45-85 MBs of RAM which is always helpful. I did see better gameplay after installing and running this. As noted before concerning the other game booster, make sure you turn it off after gaming.
Razer re-released the GameBooster (im pretty sure) and Ive tried it out on my rig and laptop and I didnt get much of an increase of performance maybe another 5-10fps gain on both of them but it didnt make either computer crash or anything. Its a pretty neat tbh