I have enabled Bus Disconnect on my Asus A2D notebook (Athlon XP-M 2800+, SiS 746 chipset) with a free tool called S2kCtl successfully.
I have SpeedswitchXP running, dynamically adjusting the frequency of the processor according to the system load. It also runs fine.
I can't see any difference with or without Bus Disconnect, my CPU temperature doesn't want to go below 50C, even when my no program is running and my processor frequency stays at 400Mhz for an extended period of time.
Is it possible Bus Disconnect has no effect on my machine?