Without knowing what games you are playing it is really hard to narrow down to a specific card. From a technical point of view;
Your computer supports a PCI-Express video card, which is the newest connection bus for video cards. You would be able to utilize any of the current video cards on the market. The one item to pay close attention to is the power supply requirements of the video card. As you only have a 250 Watt power supply you may need to upgrade in order to use the higher end cards, this can often be written in small print on the side or box of the box. Any sales associate in the store will be able to help you find that information on each card.
For reference here is a link to our video card section FutureShop.ca HD Video Cards
