Hardware Canucks has a rather complete review of the BFG 800W power supply this weekend that includes some autopsy shots from our very own Oklahoma Wolf.
Although the BFG does not fail to impress in performance and build "girth" the feature set left the unit a little short... and we're not just talking about short PCI Express cables.
You would expect an 800W power supply to be able to natively run a pair of 8800GTX or HD2900XT cards but the BFG 800W doesn’t. It only has a pair of PCI-E connectors and none of the new PCI-E 8-pin connectors which have become (in my opinion) mandatory on all power supplies over 600W. Finally, there is the noise output of this power supply that may annoy some people. If you like playing your games at louder volumes of if you have some of those neato noise-canceling headphones then you are all right. But, if you want a quiet computer then you should definitely look elsewhere.