Upgrade PC - specifically graphics card?

My Jaw immediately dropped when I saw the "10GHz" for the CPU, but soon realized you meant all the cores' clock speed combined LOL! This 9800GTX+ (Link : a href="http://www.newegg.com/Product/Product.aspx?Item=N82E16814130376" rel="nofollow"http://www.newegg.com/Product/Product.as…/a ) is very good and can run just about any game right now, especially since you have a Quad-Core CPU already installed in your machine. It will run much better than the 9800GT that I saw someone else post, and is well worth the bit of extra money.