A Dumb PSU Question

Discussion in 'Alienware' started by ganzonomy, Jul 2, 2017.

  1. skandal

    skandal Notebook Geek

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    I think you would gain some efficiency if you had a PSU with less output. With that PSU, in idle, you will probably have an efficiency bellow 80%.
    In desktops is not a very good ideia to have a overpowered PSU. Efficency works in curves, so havin a 20% load on a 1Kw PSU can be worse than having 40% in a 700W one.

    Because the 180w is cheaper :p The difference here is way smaller than desktop PCs, so buying a 240W probably won't have the same side effects as stated above.
     
  2. Falkentyne

    Falkentyne Notebook Deity

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    I believe charge rate is determined by the laptop EC firmware and not the charger.
    If you use a larger than required charger (good besides weight) but the laptop is hardwired to use the default charger settings, a larger charger won't do anything except run cooler.
    Now if you had a modded Bios which allows you to draw as much power as available, or a non cancer Bios which does the same thing, that's different.
     
  3. pathfindercod

    pathfindercod Notebook Deity

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    Yeah my point to the OP is a larger one will not hurt. It wont help either unless the machine is unlocked to utilize it.
     
  4. ganzonomy

    ganzonomy Notebook Deity

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    You use a 330w PSU with an Alienware 13?!
     
  5. pathfindercod

    pathfindercod Notebook Deity

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    My desk at work is not easy to fish power cable up and through. So I just perminantley mounted one in place. So doesn't matter if i use my 13, 14,17 or 18 I am covered in power needs.
     
    Rengsey R. H. Jr. likes this.
  6. ganzonomy

    ganzonomy Notebook Deity

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    The 180w gets a bit warm for me. If the 240w or 330w are capable of being plugged without any modding, I may get a 240w one (esp. since the 240w is still slim; the 330w looks HUGE)
     
  7. Vasudev

    Vasudev Notebook Virtuoso

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    240W will be more than enough.
     
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