The benchmarks are run on a Linux ia32 architecture and follow the standard Dart benchmark harness. Over time, we'll add to the set of benchmarks being tracked. Of course, benchmarking is a subtle science, which is why we've published a short guide on benchmarking Dart.
It's still early for Dart VM, but we're encouraged by the initial performance boost for web developers. If you are too, download the Dart SDK and get started today. We encourage you to send feedback using our mailing list.
Written by Anders Johnsen, Speed Obsessed Software Engineer