Yes, without a doubt. A GTX 560 ti requires two 6 pin PCIE power connectors, a well ventilated case, and a PCIE slot that supports 16 x speeds. You could easily run this off of a 500w PSU, now this does not mean it will run off of any 500w PSU efficiently. Companies all across the board stuff the cheapest parts they can find since, well, they simply don't care and want to keep pricing for them down and maximize profit, and secondly not a lot of people will be putting mid range video cards in them. You'd have to replace the PSU and maybe the case ( at this point you don't even know if it would physically fit - when you're once done with that, you will likely run into CPU bottlenecks holding your system back. Your best bet would to grab a low-profile card like a 5670 and play some light games until you save up enough cash to build a custom PC since this PC has no where to go.