If you dont know what your talking about, it does not help to leave a comment based in ignorance.
This quote was based on my using 4850s in Xfire. As with the Xfire off and on, I'm using trifire now, 4870x2+ 4870, and with that x2, you cannot disable it w/o disabling A.I. Without any settings known, or resolution, it is very possible to get 17fps or lower in crysis with a 4850x2. So no, the comment is based on ignorance (not IN ignorance)