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Thread: Power supply replacing

  1. #11
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    Re:Power supply replacing

    now if only there were an easy way to tell wattage by looking at it......

    oh, and i'm wondering, how do you know if a PS has enough juice? is there a rule of thumb, like a cd-r takes 87 watts or something like that? in other words, can you audit your PS/system

  2. #12
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    Re:Power supply replacing

    It should say on the sticker on top 250W,300W, etc.

  3. #13

    Re:Power supply replacing

    [quote author=CP link=board=3;threadid=5587;start=0#56018 date=1040013590]
    It should say on the sticker on top 250W,300W, etc.
    [/quote]

    That and systems from then shouldn't need more than 300W but as far as I know it doesn't hurt to get a 400W or even 500W PS (if it will fit) The components will only draw as much power from the PS as it needs... A lot of overclockers use heaftier PSs so that they can safely power their fans and the such!

    HTH

  4. #14
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    Re:Power supply replacing

    [quote author=grimey link=board=3;threadid=5587;start=0#56017 date=1040013227]
    now if only there were an easy way to tell wattage by looking at it......

    oh, and i'm wondering, how do you know if a PS has enough juice? is there a rule of thumb, like a cd-r takes 87 watts or something like that? in other words, can you audit your PS/system
    [/quote]

    No general rule, except about 200W for a normal system (no 3d, at idle). Add in a power wastful CPU like AMD's and Cyrix's, more juice gets eaten. 3D cards suck a ton too, as do USB (not a shitload, but a fair chunk). Each part should say max power consuption either on it or in the manual. Plus look at the manufacturer's website for more info on power usage.

    Current AMDs will need at least 350 for safe working room. 300 at worst.

  5. #15
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    Re:Power supply replacing

    Just a wee note about wasteful AMD. My friend has an app for windows that turns on a "feature" of the CPU. It disables parts of the CPU that aren't being used, thereby lowering temperature, wattage, and you can safely lower the voltage if you so desire.

  6. #16
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    Re:Power supply replacing

    [quote author=CP link=board=3;threadid=5587;start=0#56080 date=1040071295]
    Just a wee note about wasteful AMD. My friend has an app for windows that turns on a "feature" of the CPU. It disables parts of the CPU that aren't being used, thereby lowering temperature, wattage, and you can safely lower the voltage if you so desire.
    [/quote]

    Executing HLT commands... Linux does that per default (if compiled into the kernel)

  7. #17
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    Re:Power supply replacing

    Apparently its something else. If you leave the PC at idle, then the temperature will drop to almost room temperature. However AMD disable per default because they found that it is better to have the CPU 10degrees or so hotter, rather than have the expansion and contraction from changing 20-30 from idle-load.

  8. #18
    Guest

    Re:Power supply replacing

    [quote author=CP link=board=3;threadid=5587;start=0#56408 date=1040506118]
    Apparently its something else. If you leave the PC at idle, then the temperature will drop to almost room temperature. However AMD disable per default because they found that it is better to have the CPU 10degrees or so hotter, rather than have the expansion and contraction from changing 20-30 from idle-load.
    [/quote]

    AMD cpus need a special set of HLT commands, there's a thread about it on forums.gentoo.org it's nothing more than simple HLT

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