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  1. #16
    Standby sleep or shut down
    pigoo3's Avatar
    Member Since
    May 20, 2008
    Location
    U.S.
    Posts
    39,818
    Your Mac's Specs
    2011 17" MBP 2.2ghz, 16gig ram, OS 10.11.6
    I think this discusison has taken two paths:

    1. To sleep or to shut down a computer?
    2. To leave the computer running 24-7 or power it down (shutdown or sleep)?

    The answer to each of these can be somewhat different. One main factor of difference being energy use.

    - Nick
    - Too many "beachballs", read this: Beachballs
    - Computer seems slower than it used to? Read this for some slow computer tips: Speedup
    - Almost full hard drive? Some solutions. Out of Space
    - Apple Battery Info. Battery

  2. #17
    Standby sleep or shut down
    pm-r's Avatar
    Member Since
    Oct 16, 2010
    Location
    Brentwood Bay, BC, Canada
    Posts
    9,794
    The answer to each of these can be somewhat different.

    I think another thing to consider is how long a period of time one actually uses their computer for.

    Mine for example is usually running for about 12 hours constantly daily where someone else may only use their's for a short period of time and maybe just to check on some things.





    - Patrick
    ======

  3. #18
    Standby sleep or shut down
    toMACsh's Avatar
    Member Since
    Jul 30, 2009
    Location
    Wisconsin
    Posts
    6,578
    Your Mac's Specs
    Mac Mini (Late 2014) 2.6GHz Intel Core i5 Memory: 8GB 1600MHz DDR3
    Quote Originally Posted by usagora View Post
    Maybe I'm just slow, but what does your laundry room light bulb have to do with you shutting down your Mac every night and rebooting every morning?
    I guess you got your answer. I was just tagging onto an earlier post.

    Quote Originally Posted by pigoo3 View Post
    Yes...but maybe (years & years ago) you created this routine totally due to the fact that the computer does take time to startup from a fresh boot...giving you time to get dressed while the computer booted.
    Precisely...

    If you put the computer to "sleep" each night...you could actually get dressed first...then sit down in front of the computer after dressing...tap a key on the keyboard...and instantly start using your computer (no boot time necessary).
    Doesn't matter to me...

    Quote Originally Posted by pigoo3 View Post
    ... One main factor of difference being energy use.

    - Nick
    Every analysis of energy use related to sleeping or shutting down a computer that I've read has been inconclusive. If there is a difference (and there must be) it's apparently not very significant. There are lots of variables. A blanket statement one way or the other does not take that into account.

  4. #19
    Standby sleep or shut down
    pigoo3's Avatar
    Member Since
    May 20, 2008
    Location
    U.S.
    Posts
    39,818
    Your Mac's Specs
    2011 17" MBP 2.2ghz, 16gig ram, OS 10.11.6
    Quote Originally Posted by toMACsh View Post
    Every analysis of energy use related to sleeping or shutting down a computer that I've read has been inconclusive. If there is a difference (and there must be) it's apparently not very significant. There are lots of variables. A blanket statement one way or the other does not take that into account.
    I wasn't referring to energy use differences between sleeping & shutting down...was referring to energy use between a computer running non-stop 365 days a year vs. sleeping/shutting down.

    - Nick
    - Too many "beachballs", read this: Beachballs
    - Computer seems slower than it used to? Read this for some slow computer tips: Speedup
    - Almost full hard drive? Some solutions. Out of Space
    - Apple Battery Info. Battery

  5. #20
    Standby sleep or shut down
    MacInWin's Avatar
    Member Since
    Jan 01, 2009
    Location
    Winchester, VA
    Posts
    4,556
    Your Mac's Specs
    MBP 15" Mid 2015, iPhone XS, an iMac, plus ATVs, AWatch, MacMini
    I did some quick math. The MBP now has an 85w power brick, although in most modes it draws much, much less than that. But assuming 85 w continuously used, in a year that is 744KwH. In my home state of Virginia, the average cost of a KWH of electricity is 12.33 cents, which means that at max usage, a Mac will draw no more than $91.81 per year, or about $7.65 per month. If the average usage is, as I suspect, about 33% of the power brick max, then the figure is closer to $30 a year and about $2.40 per month.(I got the 33% through Coconut battery, which showed a power usage of 28 watts just now.)

    Bottom line, the MBP doesn't take much power to keep on 24/7. And the delta between being on, say 12 hours and 24 hours is even smaller.
    Jake

  6. #21
    Standby sleep or shut down
    pigoo3's Avatar
    Member Since
    May 20, 2008
    Location
    U.S.
    Posts
    39,818
    Your Mac's Specs
    2011 17" MBP 2.2ghz, 16gig ram, OS 10.11.6
    I hear ya Jake...I was going to run the math as well to come up with a number. I agree that $7.65/month is not terrible (maybe an iMac or Mac Pro would run a bit higher)...and as you mentioned this is probaby a very liberal number (on the high side estimate) & the actual number a good bit less. Thus from a monthly or annual cost perspective not too bad.

    But...there is another factor to consider. Is it very "Green" to leave a computer running 24-7...even if financially this may not be much of a burden for many folks? I think you mentioned that you're running a home automation server...which may make running a computer 24-7 necessary for you.

    I'm not saying I'm a "tree-hugger"...just mentioning this since energy conservation, being "Green", "Save the Planet" is very important to a segment of the population.

    - Nick
    - Too many "beachballs", read this: Beachballs
    - Computer seems slower than it used to? Read this for some slow computer tips: Speedup
    - Almost full hard drive? Some solutions. Out of Space
    - Apple Battery Info. Battery

  7. #22
    Standby sleep or shut down
    MacInWin's Avatar
    Member Since
    Jan 01, 2009
    Location
    Winchester, VA
    Posts
    4,556
    Your Mac's Specs
    MBP 15" Mid 2015, iPhone XS, an iMac, plus ATVs, AWatch, MacMini
    Nick, if I were a "tree-hugger" I shouldn't even have a computer. The manufacture of it is energy intensive, probably consuming more power in the manufacture than it will burn in it's entire lifetime. Aluminum takes massive electricity to extract from the ore and the various chips inside the case also take a lot of power to create. The little that gets used by the end user is a small fraction of the total energy footprint of the computer.
    Jake

  8. #23
    Standby sleep or shut down

    Member Since
    Sep 15, 2018
    Location
    Florida
    Posts
    7
    Your Mac's Specs
    2017 IMAC 21.5" High Sierra OS 10.13.6
    WOW thank you all so much for your replies and advice !! Now how do I find out if my IMAC is SSD or IHD ??

  9. #24
    Standby sleep or shut down
    IWT's Avatar
    Member Since
    Jan 23, 2009
    Location
    Born in Scotland, Worked in Scotland then England, Now live in Wales
    Posts
    4,626
    Your Mac's Specs
    Late 2015 5K 27-inch Retina iMac, 4GHz i7, 32GB RAM, 1TB Flash Drive, macOS High Sierra 10.13.6
    Quote Originally Posted by Tyehead View Post
    WOW thank you all so much for your replies and advice !! Now how do I find out if my IMAC is SSD or IHD ??
    There are several ways, but one way is to Click on the Apple icon -  - top left menu bar; then choose about this Mac; then Click on Storage and look under Macintosh HD as in this screenshot

    S3.png

    You will see that mine says 1 TB Flash Storage. Flash storage = SSD. Yours might say Fusion or HDD. Let us know if you're not sure.

    Ian
    Ian

  10. #25
    Standby sleep or shut down
    pigoo3's Avatar
    Member Since
    May 20, 2008
    Location
    U.S.
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    39,818
    Your Mac's Specs
    2011 17" MBP 2.2ghz, 16gig ram, OS 10.11.6
    Quote Originally Posted by IWT View Post
    You will see that mine says 1 TB Flash Storage.
    Look at the "Big Dog" with the 1TB flash storage drive!

    - Nick
    - Too many "beachballs", read this: Beachballs
    - Computer seems slower than it used to? Read this for some slow computer tips: Speedup
    - Almost full hard drive? Some solutions. Out of Space
    - Apple Battery Info. Battery

  11. #26
    Standby sleep or shut down
    IWT's Avatar
    Member Since
    Jan 23, 2009
    Location
    Born in Scotland, Worked in Scotland then England, Now live in Wales
    Posts
    4,626
    Your Mac's Specs
    Late 2015 5K 27-inch Retina iMac, 4GHz i7, 32GB RAM, 1TB Flash Drive, macOS High Sierra 10.13.6
    Look at the "Big Dog" with the 1TB flash storage drive!
    Woof, woof!

    Nice one, Nick.

    Ian
    Ian

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