I ask this question out of curiosity rather than special need to know, but\nmaybe others are interested. I understand the Series 600 P4s (now in Dell\n8400's) now bring "speed step" technology to the desktop, and WinXP SP2 will\nbe aware of this and step down the CPU when the load is light or maybe even\nin response to rising temperature. I guess a P4 running at full speed can\nconsume something like a hundred watts. So what is the real-world power draw\nof the CPU when there's no load? Will I really find the system using\nsignificantly less power when it's not busy?