POV-Ray just recently made the move to 64-bit binaries, and thanks to the nifty SMPOV distributed rendering utility, we've been able to make it multithreaded, as well. SMPOV spins off any number of instances of the POV-Ray renderer, and it will bisect the scene in several different ways. For this scene, the best choice was to divide the screen up horizontally between the different threads, which provides a fairly even workload.
The other big thing to notice here is how much faster the Prescott/Nocona core looks when additional POV-Ray threads take advantage of Hyper-Threading. The Xeon 3.4GHz shaves 50 seconds off of its render time with a second thread.