3DMark2001SE, X², Comanche 4
On to 3D tests now.
Just over 200 marks separate all three boards. 3DMark2001SE is liable to fluctuate by up to that amount (approx. 1%) when run a number of times. A breakdown of the reference board's score can be found over here.
Get a blanket!. It'll cover them.
NVIDIA's nForce3 250Gb doesn't fare so well in X² - The Threat. 128FPS average isn't slow, though.