RTSquare GPU-rendering, free edition

On http://www.gputech.com you can register to download the free RTSquare plugin for Autodesk 3ds max or VIZ (any recent version), provided you have a recent graphics card with Pixel Shader support (most ATI and nVidia models would be allright).

This allows you to render using your graphics adapter instead of your processor, promising to speed up the renderings dramatically. The free edition is only licensed for non-commercial use, so would be perfect for students.

Windows only, since it works inside 3ds max and VIZ.