For the OP, and anyone else pulled in by the hype:
Basically they are saying that a BIOS option is making this board the board to have. Which means, the X38 could quite easily have this feature implemented. This does not all of a sudden make the X48 the wonder board that everyone and his dog has been waiting for, but makes it an extra tweak that currently doesn't seem to be on X38 Bios's.
Basically, next time, please read what the article says rather than posting a misleading thread.
(and yes, I read the article the day before the thread was posted).
For the record, I don't think anyone could say the X48 boards are "no better than X38's" since they X48 chipsets are effectively cherry picked/better quality X38 chipsets. So yes they are better, but only in the sense that they will prob run cooler (need less voltage) and be able to be pushed a bit further. But then, everyone pretty much knew that already....
Matthew