You do NOT need this. It is a waste of money. You will SHORTEN the life of your PS3 if you use this. There things have a problem of short cuicting and setting things on fire.The PS3 is a soild bit of hardware.
Sony are NOT microsoft, thye didnt rush the PS3 to market, they DIDNT use cheap parts. Do yourself a favour and spend the money on an awesome game like Hevenly Sword or Call of Duty 4