View Hidden 3D Benchmarks in Windows Vista
There's really nothing useful about this tip, but it's still pretty
cool. There's a utility built into Windows Vista used for
benchmarking your system called the System Assessment Tool. What
most people don't know is that you can call this utility from the
command line and view some cool 3D benchmarks.
You should be able to use a regular command prompt, but you'd have
best luck using an administrator mode command prompt. (right-click
and choose Run as Administrator). You should also note that it will
temporarily disable Aero before running the test, but don't worry,
it will re-enable it after.
Here's some mini screenshot examples for your enjoyment, the real
thing will run fullscreen. Try the command right above each one to
see it on your own computer
winsat aurora

winsat d3d -texshader -totalobj 15

winsat d3d -objs C(20) -texshader -totalobj 50

winsat d3d -totalobj 20 -objs C(20) -totaltex 10 -texpobj C(1)
-alushader -noalpha -v -time 10

winsat d3d -totalobj 20 -objs C(20) -totaltex 10 -texpobj C(10)
-alushader -v -time 10

You can adjust the commands on the prompt if you want to try to get
different combinations