These include Mail, Calendar, and other iCloud services while sleeping. Power Nap is a nifty feature that allows your device to sync to multiple Apple services. However, applications that rely on internet access may experience a delay when reestablishing a connection. While shutting down forces all apps to close, sleeping allows them to retain their current states and resume on wake up. READ MORE: How to quickly record your Mac’s screen Other components, such as the CPU, enter low power mode and continue to serve only necessary functions.īecause a sleeping Mac stores its current state in the device’s RAM, waking is a swift process, and, in most cases, you can resume work instantly. That helps keep energy consumption to a minimum. Therefore, non-essential hardware - such as the display and hard drive - can power down when your device goes to sleep. The primary purpose of Mac’s sleep mode is to save power. READ MORE: How to set sleep schedules on iPhone Utilize safe sleep to avoid data loss if Mac loses power.Use Power Nap to update iCloud services and macOS.Keep apps open and saved in their current states.Temporarily disable unnecessary hardware to save power.If you need to walk away from your Mac for more than a few minutes, we recommend putting it to sleep. Advantages of putting your Mac to sleep Image: KnowTechie But, if you want a more detailed explanation, continue reading below. Sleep vs shutdown – which is better for your Mac?Īs we’ve mentioned, each option can offer benefits. Sleep and shutdown serve specific functions, so let’s discuss the features of each option. Generally, you’ll want to put your Mac to sleep during the day when not in use and shut it down to rest and reset overnight. Your choice will depend on your schedule and device use. No solution is superior to another in all situations. When it comes to putting your Mac to sleep or shutting it down, each option has a place and purpose. And to further complicate things (and possibly ruin the whole argument!), more recent Mac laptops will write the contents of RAM to the disk even when they go to sleep, in case your battery runs flat while sleeping (effectively preparing for a hibernate in case it's forced).Quick Answer: Both sleep and shutdown serve a purpose on Mac, but ultimately, the Sleep function is better for when you step away, and shutdown is better once you are done for the day. So the Poff value might actually be quite a bit higher for a computer with a battery, which may significantly lengthen the threshold between standby and shut-down/hibernate (however the battery and charging circuitry will complicate measurements of Poff). More than likely, this will reduce the the time answer since Tbooting should have been reduced somewhat.Ī final thought is that laptop batteries seem to lose voltage over time, even when off, at a higher rate than the Mac Mini's advertised Poff. So to compare mathematically, you can consider it a "shutdown" of sorts and use the same equations (with the time taken to enter and recover from hibernate as Tbooting and the power usage while it swaps between RAM and disk as Pbooting). In my experience this is usually faster than a full shutdown, and of course it uses the same (incredibly low) power while off/hibernating. But it surprised me that it was only 1 hour (I was expecting somewhat longer based on claims I've read in the past, that went along the lines of this discussion).Īs points out, there's another option which is to hibernate using something like DeepSleep. I've yet to find similar values for the laptops (they make a big deal about the Mac Mini being so energy efficient), and the booting power/times would really need to be measured to provide accurate figures. The Mac Mini's environmental report provides Psleep and Poff, and if we assume say 90 seconds total booting/shutting-down time and about 35W during said times, this would give an answer of 45 minutes. Requiring that Eshutdown Tbooting * ( Pbooting / (Psleep - Poff) ) The total energy used from shutting down, being off for a time and booting up is: Eshutdown = (time * Poff) + (Tbooting * Pbooting) The total energy used during a period of sleep is: Esleep = time * Psleep The last is actually stated in the Mac Mini's environmental report, and for very low sleep power usage can't just be ignored!
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |