Luke, that's just BS. PCI-E 16x is much faster than AGP 8x, but it depends on the card too. PCI-E sucks because at the moment, the latest generation of cards only just use the bandwidth AGP 4x has to offer, and there's maybe a 3fps difference between using AGP 8x and 4x. And no, Crossfire isn't very good. Crossfire is too buggy. It actually loses you considerable fps over a single-card in certain games, and one or two games were unplayable with artifacts. SLi is far superior to Crossfire, since it's software independant (further than the driver).