Hey, I'm looking to upgrade my Currant Radeon HD 5450 2GB to a HD 6570 2GB, I was thinking about using both of the cards at the same time, I have the PCI-e slots for it and I was wondering if the two cards world work together? If not I am happy to use the HD 6570 on it's own. Also is there anything you can do to make them work together better?