Well, going from a 2.0G to a 2.5G you would expect a 25% increase if it scaled perfectly. If you look at the Anand Phenom article it fell short of that but not by much. When they compaired the two only on two of the benchmark were at the 15% range, two others were at the 25% range. The average increase was 19%. Of course we don't know the stepping of the 2G chip, but as Dave said the 2.5G look to be a B2 stepping according to cpu-z. Looks pretty good to me.

It looks like Anand has done a little revision of their Quad Barcelona article. They've added the prices and looks like they've revised some of the benchmarks. In the end it look as though Barcelona does very well clock for clock against the Intels. Only losing in two tests that are biased toward the Intels to begin with. In the other benches the Barcelona is quicker clock for clock. Considering how immature all of this is, imho this bodes very well for Barcelona.

As for the Xbitlabs article, don't you just love the Intel Add next to a AMD article. I just about rolled on the floor when I saw that. I think when Allen said 15% he was being concervative