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Thread: XP + soft cooling (hlt)

  1. #1
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    Mar 2001
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    XP + soft cooling (hlt)

    I used to run WinME on my car comp. I used PCAlert III which came with my computer (an MSI) and provided software cooling (hlt idle) functionality. My CPU temp was always 1-3C over case temp when playing mp3s. When I did other stuff (like GPS), the temp would go up a good 10-15C, but it'd drop quickly when I finished.

    Now under XP, everything I can find says that XP automatically does this soft cooling. Yet the computer when playing mp3s is always 10-11C higher than the case temp. When doing something intensive, it jumps up 25C higher or so. Notably, when it goes back idle, it takes a loooong time for the CPU temperature to drop off, unlike how it used to quickly plummet under ME.

    I tried CpuIdle for XP and didn't notice any improvement. Same idle temps, same slow cooling off from activity.

    Anyone have any suggestions? I like keeping the CPU cool and reducing power usage.
    Player: Celeron II 633MHz, 256MB RAM, 20GB IBM 9mm 2.5" Laptop HD (180G/2ms), onboard ethernet/sound/video/tvout, 10"11"x3" case, MPBS1 70W DC-DC PS w/auto-shutdown controller, in-dash lighted switches, 7" NTSC TFT widescreen in-dash LCD, touchscreen, rear-window brake light installed Garmin GPS35 GPS, credit card sized IR remote w/IRMan, mini-wireless keyboard/mouse (sits under seat), PowerMate black knob, MP3s and GPS Navigation (Winamp, CoPilot, SA8.0).
    Car: 1993 Nissan Maxima, Black Emerald

  2. #2
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    Mar 2001
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    292
    bump.
    Player: Celeron II 633MHz, 256MB RAM, 20GB IBM 9mm 2.5" Laptop HD (180G/2ms), onboard ethernet/sound/video/tvout, 10"11"x3" case, MPBS1 70W DC-DC PS w/auto-shutdown controller, in-dash lighted switches, 7" NTSC TFT widescreen in-dash LCD, touchscreen, rear-window brake light installed Garmin GPS35 GPS, credit card sized IR remote w/IRMan, mini-wireless keyboard/mouse (sits under seat), PowerMate black knob, MP3s and GPS Navigation (Winamp, CoPilot, SA8.0).
    Car: 1993 Nissan Maxima, Black Emerald

  3. #3
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    Dec 2001
    Location
    Paignton, Devon, UK
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    315
    I'm sure you know this already, but XP is a dramatically different OS to winme. This is really general cause I don't understand it but seeing as noone else has replied here's my idea. XP deals with accessing stuff differently and does a lot of things in the background. Perhaps something is using you idle CPU time for something. Then, when this is finished a hlt command is issued. This is a bit of a puzzle. Perhaps someone who knows more about the NT kernal could shed some light on this - I get the feeling it is normal - my p4 laptop does this, even when there are no active programs. It carries on for a bit then the temp drops right down!

    Let me know if you work out whats causing this, or if you just stick with it. Perhaps one of the XP embedded installs would suite you better??

    Cheers

    Andrew
    Mediabox Hardware Project
    Current Stage: A complete redesign, although not much happening right now!

    Mediabox Software Project
    Status: Writing Sync Software (still) and playing around with interface
    To do: Far too much!

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