More companies starts to consider to upgrade from XP to Vista and then this Autodesk and Windows Vista white paper can come handy.
Some highlights are:
"companies that run AutoCAD 2008 64-bit on Windows Vista can speed up their work."
"AutoCAD Architecture 2008 users should experience the same high performance. Benchmark testing shows no degradation or enhancement to performance on Windows Vista."
"Autodesk has found that the performance of AutoCAD Civil 3D 2008 undergoes some changes when run on Windows Vista. Benchmark testing shows that while some processes perform the same when run on Windows Vista and Windows XP, some are slower on Windows Vista. Autodesk has found that the more RAM a system has, the less perceptible the slowdown. Conversely, processes leveraging the .NET framework, such as corridor processing, are up to 10 times faster on Windows Vista."
"Autodesk’s benchmark testing shows neither degradation nor enhancement of performance when AutoCAD Map 3D 2008 is run on Windows Vista."
"With 64-bit, users can handle larger and more complex scenes and experience improved large model and data set performance. With 3ds Max 2008, users can start in either Direct3D or OpenGL modes. If they run the application in Direct3D model, they will experience additional performance improvements."
"the software client version of the Autodesk Buzzsaw 2007.3 is not Vista compatible."
Inventor - "Autodesk has found that by leveraging Direct3D, Inventor implementation on Windows Vista shows performance gains of approximately 5% when compared with Windows XP."
Revit Architecture 2008 - "Benchmark testing shows no degradation or enhancement to performance on Windows Vista."