I came across a post about a benchmarking utility that is part of every autocad install.

Check out the original post here.

To load the utility drag and drop the GsTest.arx file into your drawing space (or use the APPLOAD command). Once the arx file has been loaded type

GSTESTBENCHMARK

at the command prompt.

The routine runs quickly and appears to provide valuable results. Here is a sample output.

-------------------------------
Wireframe      : 1370.746771 ms
Wireframe      : 132.774342 fps
Hidden Line    : 1393.239294 ms
Hidden Line    : 130.630826 fps
Flat Shaded    : 1494.107561 ms
Flat Shaded    : 121.811846 fps
Gouraud Shaded : 3411.830554 ms
Gouraud Shaded : 53.343798 fps
-------------------------------

For testing multiple PC configurations select a single drawing file for benchmarking on all PCs. I would recommend a large drawing file. The utility only benchmarks the graphics capability of the PC. This should prove useful for Civil 3D users as it appears the video card is typically the weakest links in Civil 3D work stations.