" Now that we know how the 870A Fuzion will perform when run as a single GPU system, we need to see if the Fuzion side of the house is worth the price of admission. After all, that is one of the major selling points of the system (running dual NVIDIA GPUs on the board). But simply getting an SLI replacement on an AMD system does not cover what Fuzion is all about. As we have mentioned before, there are three modes for Fuzion. There is A Mode – which is dual AMD based GPUs, N Mode – dual NVIDIA GPUs and the one that made Fuzion famous; X-Mode or mixed mode. Each of these modes offer different levels of performance gain and can help to deliver a different type of performance boost. "