Dual Low Profile Graphics Cards?

300 watt is not enough for crossfire here is a link a href="http://www.amd.com/us/products/desktop/graphics/ati-radeon-hd-4000/hd-4600/Pages/ati-radeon-hd-4600-system-requirements.aspx" rel="nofollow"http://www.amd.com/us/products/desktop/g…/a