Nvidia uses SLI not crossfire, to go crossfire requires two AMD GPUs. Your friend probably means Hybrid CrossFireX. I think you would need another AMD GPU for it to work properly with your APU. I would get a regular FX-6300 or FX-8320, and a good AMD VGA card then you can crossfire a 2nd later in the future, or get a nVidia and SLI in the future.