AnandTech investigates how well AMD's Athlon 64 X2 overclocks:
We’re looking at the Athlon X2 3800+, as you can probably already guess. However, we started work on the benchmarks quite a while back and there are actually a couple of newer options that are potentially higher performing. The new Opteron 165/170 chips use the Denmark core, which is basically the workstation version of the Toledo. While the 165 comes with a lower default clock speed, we would venture to say that it has the potential to overclock just as high as the X2 3800+ that we’ll be using in this article, and likely even higher.