Sounds like a waste of money. Buying something on a chance that you might can unlock the cores. Most of the time 1 of the cores is defective so they lock it out and sell it as something less expensive. How do you know you can overclock it to 3.5 GHz? As far as I know that is a case by case basis, unless you already had this particular chip in the board you're using and did the overclock on it. Why can't you overclock the 9950 higher?