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Power consumption (wattage) in laptop query

  • 23-02-2010 8:51pm
    #1
    drunken_munky52
    Closed Accounts Posts: 636 ✭✭✭


    I'm just wondering how much power a laptop consumes.

    I have a Sony VAIO VGN-SR51M which has an energy star sticker on it.

    If that is the case, what would its power consumption be charging the battery and without charging the battery be roughly?

    I cant find any clear data online for this, but understand that on average, laptops will consume 80-90 watts. Is this the case then for my one too?

    Any help would be grateful, thanks


Comments

  • #2
    Voodu Child
    Closed Accounts Posts: 6,706 ✭✭✭Voodu Child


    drunken_munky52 wrote: »
    I'm just wondering how much power a laptop consumes.

    I have a Sony VAIO VGN-SR51M which has an energy star sticker on it.

    If that is the case, what would its power consumption be charging the battery and without charging the battery be roughly?

    I cant find any clear data online for this, but understand that on average, laptops will consume 80-90 watts. Is this the case then for my one too?

    Any help would be grateful, thanks
    It will vary hugely from laptop to laptop. And even with one particular laptop, it will vary hugely over time, depending on what you're doing, backlight brightness, wireless on/off, etc etc.

    Put a digital power meter between the PSU and the wall if you want an accurate answer, specific to your own laptop. Thats what this guy did: Link

    Generally, the peak power draw will always be a safe % below the power rating of the PSU. For the simple reason that the manufacturer will always give you a PSU that can power your laptop safely. And day to day, the average user would probably never get close to peak power draw, not for any length of time anyway (unless you were a gamer, or running the CPU hard etc).


  • #3
    InReality
    Registered Users, Registered Users 2 Posts: 1,374 ✭✭✭InReality


    I saw a review site that gives estimates like that. I think it was on cnet.


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