hi i plan to buy a graphics card in the upcoming week to go with this computer i purchased: http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?objectID=c01779687&lang=en&cc=us&contentType=SupportFAQ&prodSeriesId=3942799&prodTypeId=12454 . all i want the graphics card is to be able to play Starcraft II in high-ultra settings on it for the next 2-3 years before i upgrade completely. now all i want to know is which one would be better for my computer which is only around 300W and has a 2.6GHz dual core processor that will last me a good 2-3 years thanks.