How much energy does a "brick" power cord take?

Hi,
1. How much energy does the White Brick power cord consume when the computer is fully charged?
     A. Does it vary based on processor action?
     B. How bout when the computer is sleeping?
     C. How bout when the computer is off?
2. How much energy does it consume when it's not attached to the computer?
     A. I also want to know this for chargers for other Apple devices.
Thanks for any info on this. I haven't done any searching on this, so maybe it's an obvious question.

Thanks for these answers. I neglected this post for a while as I didn't have time to investigate. The answers were helpful.
I did find some more information:
https://discussions.apple.com/message/6423752#6423752 lists (for a 2008 macbook) the consumption. I would be interested in seeing this for the latest models. Especially interesting is this: "Power brick energized, but not attached to computer - unmeasurable." Is the power adpater (it's a transformer) this energy efficient? This is a big deal if I am planning on unplugging my laptop at night.
I also see this: https://www.apple.com/macbook-pro/environment/ . But, unfortunately (and outrageously), it does not give details (it is not outrageous as a status quo piece of marketing, but it's outrageous that the status quo is that little information! So, the problem is not Apple, per se, but the habits. Maybe that is an area for a marketing company to improve on!
I found this for some more, general information: http://electronics.howstuffworks.com/everyday-tech/plug-in-transformer.htm . That gives: "The power consumption is not large [on power chargers] -- on the order of 1 to 5 watts per transformer."
I'd certainly be interested in information on Apple's other products (like iPod and iPhone chargers).

Similar Messages

  • How much energy does an iMac uses in volts? (regular and when it is asleep)

    How much energy does an imac uses

    The voltage during sleep or usage is the same. It's the current in Amperes that changes. The "energy" is the wattage consumed which is Volts times Amperes. That information should be in the User Guide. If you don't have one you can download one here.
    According to the specifications the rated power consumption is 200 watts for the 20" model and 280 watts for the 24" model. Sleep consumption is probably around 40 watts.

  • How much space does a Windows 7 install take on a Mac?

    How much space does a Windows 7 install take on a Mac?

    Installation of Windows 7 is required at least around 20GB of disk space 64bit version, 32bit version is around 16GB, 100GB is a sensible amount of disk space for a Windows installation, I suppose.

  • How much space does OS X Mountain Lion take?

    I am considering a MacBook Air 128 GB for my next laptop, but I'm not sure if that's enough. How much space does the OS take up?

    OS X Mountain Lion, without any third-party app, takes about 9 GB of hard disk. The minimum requirement is 8 GB of hard drive space, so if you have to store a lot of data, you may have to buy an external drive to store all the files you want

  • How much room does a game or app take up?

    I was wondering how much room on an ipod a game or app takes up. If you know it would be awesome if you could let me know. Thanks.

    most apps start at round 500kb and can go over 1gb in memory size asphalt 6 is using  over 1gb
    and sonic racing is around 400mb u can find out be for downloading an app from the app store by going right down to the bottom and looking at the app size

  • How much can a 430 watt power supply take?

    Hello,
    I am hoping someone can help me out.  See below for my rig.  Do I have too many components for my Antec 430 watt True power?  I haven't been able to find any accurate power ratings for these components.
    Any help is greatly appreciated.
    Thanks,
    CD151

    I agree you should be fine, and that the site overestimates a bit (it says my setup should have at least 386 watts, and I've been fine on my 380W PSU for over a year now of near 24/7 operation...even though I believe that the PSU's max possible output across all rails is only 330W total).  The bottom line is that any modern PSU from a decent manufacturer (and Antec is a pretty good choice for PSU's) will do just fine.
    Note that the PSU calculator site uses the *max* possible power consumption for all the components (i.e. the Athlon64 CPU *does not* draw 89W of power all the time, or even all the time when it is at 100% utilization), and the same applies for the other components as well.  A little while ago I purchased a power monitor thingy that plugs into the wall socket and has a readout that displays the current power draw, as I was fed up with people always thinking that my PSU was woefully inadequate for my setup.  At idle, my system, with all its drives and PCI cards and overclocks, pulls a grand total of 150W of power.  At 100% CPU utilization (Prime95 torture test), it pulls a little under 190W.  At full CPU and GPU utilization (playing HL2, and the rthdribl demo), the total power drain is always under 225W.  Now let's bear in mind that this is power drain from the outlet, *not* power applied to the board.  Because the PSU is, at best, 85% efficient, 15% of this energy (at least) is lost as heat in the PSU, meaning that only about 192W is actually going out to the board at full CPU/GPU load, and since the PSU is capable of sending up to 330W out to the board (assuming it performs up to spec, which it should given Antec's reputation), I have quite a bit of headroom even on my "small" 380W PSU, even though I'm running more hardware than most users.
    So anyways, the moral of the story is just get a quality PSU from a manufacturer that is reputable for making good PSU's, and you shouldn't have to worry about a thing.

  • How much space does Lion  and Mountain Lion take up?

    I have a 64gb MacBook Air and I dont have many apps or files on it but I only have 30gb left, is this normal?
    I'm new to Macs

    Here are instructions on how to create USB bootable drive with Mounain Lion. http://reviews.cnet.com/8301-13727_7-57479690-263/how-to-create-an-os-x-10.8-mou ntain-lion-install-drive/

  • How much time does a single transmission take?

    Hello,
    I was wondering what is the time taken to transmit one sample takes. For example, if the sample interval is 5 seconds, does the actual transmission take 10ms? What does it do for the rest of the time?
    Also, how much energy does a 3202 node take to transmit a single sample?
    Thanks, 
    Sravan 

    Hey Sravan,
    I wanted to provide some additional details to Kyle's post above. 
    This is on average what we have seen with a 3212 node sampling at a 60 second sample interval:
    Sleep Duration: 58.774 seconds
    Sleep Power: 7.41 mJ
    Acquisition Duration (All 4 channels): 1150 ms
    Acquisition Energy: 2.84 mJ
    Transmit Duration: 55 ms
    Transmit Energy: 9.17 mJ
    Receive Duration: 21 ms 
    Receive Energy: 1.83 mJ 
    Additionally, if your sample rate is above 61 seconds, then you will run into the Heartbeat Interval which fires after every 61 seconds of inactivity.  Below are average power measurements for the heartbeat interval:
    Transmit Heartbeat Duration: 55ms
    Transmit Heartbeat Energy: 7.79 mJ
    Note: Each heartbeat will then also need to account for receiving that a response from the gateway (Receive information from above).
    Taking all that into account, the graph below shows estimated battery life for sample intervals up to 300 seconds.  The dips in the graph represent a sample interval that is just larger than the heartbeat interval, which essentially means you are transmitting twice in a very short period.
    Hopefully you find this information helpful.  Please let me know if I can clarify anything for you. 
    National Instruments
    WSN/Wireless DAQ Product Support Engineer

  • Does anyone know how much energy is consumed for charging a iphone?

    Hi, does anyone know how much energy is consumed for charging a iphone???
    4W? how much does it cost??
    Is there anyway I can test and check how much electricity I have been used for charging a iphone?
    Thanks a lot!

    Thank you very much for all your replies.
    I am wondering if there is any application for iphone which can alarm or help me to know how much energy I have been consuming while charging, or using different applications. or even, if there is possibility of designing one with that function?
    I am currently working on a project which is about the energy consumption of iphone applications. I have been working on my iphone (a 2 years old iphone 3G) and tried to find out the top 100 applications which consume the most electricity. Any suggestions or ideas?
    If anyone is interested in this, you are all welcome to participate and send suggestions!

  • How much electricity does an Airport Express use (approximately)?

    How much electricity does an Airport Express 802.11n use (approximately)?
    Is turning it off at night to save money a good idea or a bad idea?

    That's exactly the data I needed to know.  Thank you very much!
    I was concerned because the Express is always quite warm, which sometimes can mean big energy bills.......
    tronchaviones wrote:
    I've just measured it using a digital wattmeter, and it draws 4 watts when idle. This means about 3 kWh/month, or 0.60 €/month (at my current 0.20 € / kWh), so it is not the culprit of my huge energy bill...
    Surely it is not worth the hassle of unplugging it everyday, with the accelerated ageing it causes to the device.

  • There is a screen that shows how much energy is being used by an application..where do I find that screen

    There is a screen that opens on a monitor that shows how much energy is being used by an application.   Any body can tell me how do I find it.. ?
    My lap is blowing the fan continuously and I know its because a lot of energy is used by any of the applications.. I would like to be able to monitor that.

    Well, this isn't notebook community for one. For another Top is quite good and can show you a lot or stick with Activity Monitor with its GUI.
    You definitely want to install a utility to monitor temps, whether iStatPro or Temperature Monitor
    www.macupdate.com
    Energy = watts but you don't mean measuring what you are using off the wall outlet, rather the fan speed and temperature sensors.
    If you know you will be doing something to stress the system, FanControl can set profiles and instead of waiting to get hot, kick up the fan rpm to something more useful first. Works well.
    You could have software that is not well behaved. Or that you installed years ago that is not compatible with what you have now. When last you installed the OS whether it was an upgrade in place or clean install (and used Setup Assistant to import apps).
    Mac OS forum or MacBook Pro:
    MacBook Pro
    https://discussions.apple.com/community/notebooks/macbook_pro 
    https://discussions.apple.com/community/mac_os?view=discussions
    http://www.apple.com/support/macbookpro

  • How much sound does a RMBP make

    I'm planning on getting my first Mac. The $2,799 MacBook Pro with retina display 15". I have a student discount so it will be $2,599 instead.
    I am going to wait for the next generation of MacBooks to be released, also I have a question about its sounds. Will it make a lot of sound like fan noises? It needs to be COMPLETELY silent. Because I will be using this next year in class when I'm a sophomore. And does the keyboard make any noise either? Thanks!
    Also, if I get something like "it depends on what you are doing" here are some examples.
    5-7 tabs open and a text editor for notes, some system settings and misc things. No gaming.                   How much sound does this make?
    Thanks in advance!

    I have one and it is totally silent, unless I am mirroring video to my tv, then the fans kick on.
    For example, I routinely have ten or more tabs open and it is silent. Video or video editing may make the fans be audible. The keyboard is quiet.
    I am a low income person who loves the retina display. It makes ordinary photos seem professional. The extra size from the 13" is useful.
    Best to play with the choices at an Apple Store to check out your preferences, if possible.
    Text on the retina kind of spoils me for any other computer.
    Hugh

  • How much storage does the iPod Touch start with?

    I no this may sound like a stupid question but I no from preivous experience that when you buy an iPod you don't the full storage they say you get. e.g. my current iPod (Classic 80GB) only comes 74.2GB of storaage.
    *So my question is - how much storage does each iPod Touch model start out with?*
    For example, the 8GB model may only have 7GB to start out with.
    thanks in advance.
    Message was edited by: alangeorge

    You will find ALL storage devices act this way. Your computers hard drive is the same (actual storage of a gigabyte sized drive will be 0.93 times what the stated size is).
    An 8GB touch will be about 7.4GB.
    Patrick

  • How much data does google maps use

    how much data does google maos use ?

    That question has a lot of variables. If you are just looking up an address it should not using very much. If you are using  it for an 8 hour drive it will use quite a bit.

  • How much data does facetime use?

    How much data does a FaceTime video call use on an iPhone 4S (3G)?

        Great question ah56.
    Here's a great link to apples site: https://discussions.apple.com/thread/4730282
    JoeL_VZW
    Follow us on Twitter @VZWSupport

Maybe you are looking for

  • Single MDB on a clustered JMS queues(2)

    I have 2 JMS servers in a cluster and each server has a JMS queue, which forms the distributed destination. Now I need a MDB to listen on both these queues. Is it possible? Thanks -Ankur

  • Output Text values getting duplicated when UDF attached to view form

    Hi Experts, I am getting a error where the output text is having duplicated values, when i am trying to attach existing UDF to view form. Like for instance, as mentioned below: Phone Number - 23456789 State - CACA Country - UnitedStatesUnitedStatesUn

  • Iphone charger replacement program

    Anyone know if is Apple offering the third party iPhone charger replacement program in Canada? I was told by the local outlet in BC, it's for the US and other part of the world only. She said she verified with he co workers, even I told her it was re

  • Hide top axis in cross tab report

    Hi   How to hide top axis in webi report xir4. Only objects names on top axis to be hide. I see only option for data fold and unfold Please suggest. Thanks.

  • Navigational Attribute, no data in infocube.

    Dear all, I want to have navigational attribute for my infoobject 0orgunit which is an attribute of ZCREATOR. Here are the things which I have already done. 1.     In my infocube, I have navigational attribute checked under characteristics. 2.     In