Anandtech has an
article
stating ATI will release a driver that will allow Crossfire operations
with two X1300 or X1600 cards without a master card. If so, then that's
very good news as if you own one of the lower end cards, you really
don't want to spend top dollar for a master card that would be hindered
by the slower one. The two cards would function without the need of the
connector cable as well. The higher end cards will still require a
master card, but that makes more sense as the master cards are high end
cards as well.