You're looking for features of Autodesk Inventor Professional 2012!

Ray Tracing & Visualisation: For the first time, Inventor integrated a real-time ray-tracing engine, allowing for high-quality, photorealistic renderings directly within the modeling environment.

C. Assembly Management

For large assemblies, "Open Mode" was revolutionary. You could open a massive assembly and choose to load only the "Express" mode, which displayed a lightweight, non-graphical representation of components. This allowed users to navigate the browser tree and suppress components before the full geometry even loaded. For a 2012 PC with only 4GB of RAM, this was a lifesaver.

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