The PCA70B and PC-A71B only differ in terms of external appearance. Both feature 5 5.25in bays, 10 internal 3.5in bays, (of which 3 are removable) and, of course, internal space for motherboards measuring 12in-by-13in. That dictates even AMD's upcoming foot-long Radeon 2900 XT (should I even say that?) will fit in without problems.
Discover more in this COMPUTEX 2007 Headline.