AMD has unleashed the Phenom II (we hope to have our review up in a few weeks). The results were, shall we say, somewhat unexpected. According to Hard OCP:
The Phenom II performance speaks for itself. It loses to its old nemesis, the Core 2, which I think some folks will be surprised by. The Phenom II loses to the Core i7, which I think was to be expected. The Phenom II is a loser.
Scott Wasson over at Tech Report is a bit more optimistic, although suggests that this particular version of the Phenom II might be worth skipping for now:
Although the Phenom II is a marked improvement over the original 65nm Phenom, AMD still can’t match the fastest Core 2 Quads in clock-for-clock or outright performance. And obviously, the Core i7 is yet another step beyond the Core 2. With Socket AM3, though, AMD should have an infrastructure in place that’s very much like the one Intel plans to introduce with the upcoming Nehalem-derived mainstream desktop processors.
I just got in touch with AMD again after many years, and it looks like we’ll be working with them on reviews again.