Without knowing a little more about the card, and I'm guessing it's not your computer, all I could say is that the owner won't be playing Crysis anytime soon, but I'd be pretty certain there isn't much else they wouldn't be able to do. Those specs aren't real bad. Not everybody has a high end computor and a 2ghz Core 2 Duo is not a bad little processor. As for overclocking, you can, but there is a monetary and equipment cost. You have to weigh up if it is worth it. Unless the person is a high end gamer there is no real benefit for slight gain in performance you would get. For the cost of the cooling gear you could probably get a bigger processor. An extra gigabyte of memory would improve performance though and memory is pretty cheap/