This was posted in the TWC site, which is a gaming forum for Total war series games.
It's called game booster, and what it is, is a program which closes your non essential processes when you run a game, allowing more allocation to CPU and freeing up RAM. Slower/older will likely get the best boost.
The link is here
http://www.techspot.com/downloads/4842-game-booster.htmlI've investigated, as im always suspicious of .exe programs, and it looks legit. Site is legit and no negative feedback found on it 800k downloads, or other sites including the TWC where I found it. Doesn't change registry's or alter clock speed etc. Fixing to try it out for Empire:Total War.