Developer Rebellion has released a standalone DX11 PC benchmark for Aliens vs. Predator. You can download it here.
You obviously have to have one of the recently released DX11 graphics cards (AMD HD5xxx or Nvidia GTX 4xx).
DirectX 11 boasts some pretty cool new features, including advanced tessellation which allows for smoother edges and more realistic character models, as well as advanced shadow sampling, and new DX11 anti-aliasing.
The benchmark requires 303MB of international bandwidth to download.
Discuss AVP DX11 benchmark in the forums