July 9, 201016 yr I recently decided to put Windows XP on my old Sony PIII notebook that runs at a blazing 700MHz. I also have Win2k and Ubuntu in a multi-boot configuration. I installed all of the applicable XP files from Sony and it's surprisingly faster than I expected. My issue is that the idle CPU temperature is higher in XP than in Win2k and Ubuntu. In Win2k and Ubuntu, the hdd and CPU temps are the same at idle. In XP, the CPU temp is about 10C higher. I installed RightMark CPU Clock Utility and enabled the CPU HLT command and the temp dropped to match the others. I thought XP already used the HLT command just like Win2k. I have ACPI installed like it should be. What am I missing? Is there a registry key that changes this? If this were a desktop I wouldn't worry too much but I'm sure the extra heat means shorter battery life in a laptop. Any ideas?
July 9, 201016 yr Might be a problem with sp3 or lower and PIII. To solve this you might want cpuidle extreme (even if it is not freeware anymore).
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