Michael - thanks for the explanation. Does anyone know of case fans that follow Intel's specification? Or should we not expect to see any because it would require some kind of adapter to use in a normal fashion? What CPU heatsinks have 4-pin fans (besides Intels?) How innacurrate would you say RPM ...

Francis, The Asus P5GD2 can support the new Intel PWM format, "CPU Q-FAN Mode". It is designed for the new fans that seperate the fan's coils from the coil control circuits and the RPM sensing circuits. This allows the fan to report back an accurate RPM signal because that circuit is constantly powe...