To entice you with words of wisdow: "As you can see this supports Tom's findings. The strange thing was when I was running at 803mhz. As you can see by the picture where the CPU was running at 803MHz, the hard drive transfers become faster, and this does not support Tom's findings. It is showing that while I am running at 803mhz the ATA66 is working as it should. Although it could be a little faster."
FULL STORY @ INSANEHARDWARE (http://www.insanehardware.com/reviews/hardware/p3550oc/)