Responding to a request on the forums at DPReview, here’s a short video I just threw together showing how the D700 ranks against the D3 where continuous shooting is concerned.

Listen to the sound they make, too - the D700 is higher pitched, but also quieter. In my experience, the D700 has more of a “double-click” sound per shot, the D3 seems to have a faster mirror/shutter mechanism.

Nikon D700 vs D3 - FPS from Jon Read on Vimeo.

Updated: Better quality video from Vimeo.