How to upgrade the 27-inch 5K iMac (2019) with a massive 128GB of RAM [Video]

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Apple’s long-awaited refresh of the iMac lineup lastly occurred, and it caused incremental, however nonetheless worthwhile, enhancements to the lineup. Together with new 6-core and 8-core Intel choices for sooner CPU efficiency, new Radeon Professional Vega GPUs present sooner graphics.

Along with the CPU and GPU, there’s one other key improve factor that acquired some love this 12 months: Reminiscence, and many it. For the primary time, it’s now attainable to improve the 27-inch 5K iMac with 128GB of RAM, though you’ll want to take action utilizing third-party reminiscence suppliers.

The excellent news is that even should you’re not fascinated with maxing out to 128GB of RAM, it’s extremely straightforward to improve your 5K iMac’s reminiscence, and it can save you an entire lot of cash within the strategy of doing so. Watch our video tutorial for a step-by-step 5K iMac reminiscence improve information.

How to upgrade the 27-inch 5K iMac (2019) with a massive 128GB of RAM [Video] 1

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How to upgrade the 27-inch 5K iMac (2019) with a massive 128GB of RAM [Video] 1

Though the 2019 iMac can help as much as 128GB of RAM, Apple restricts its build-to-order configurations to a most of 64GB of RAM. The truth is, Apple notes that the machine helps a most of 64GB of RAM in a Four x 16GB SO-DIMM module configuration, however it seems that customers wishing to improve can transcend that quantity.

As initially discovered by OWC, the 2019 27-inch 5K iMac can help as much as 128GB of RAM by way of a Four x 32GB SO-DIMM module configuration. Therefore, should you want to improve your RAM, you’ll need to configure your iMac with the bottom 8GB quantity, and purchase appropriate aftermarket RAM modules. OWC sells a number of RAM improve choices for the 2019 5K iMac, and it was prepared to ship me a 128GB pattern to check on video.

Save a lot of cash with a DIY RAM improve

A 64GB reminiscence improve, the utmost quantity of reminiscence configurable utilizing Apple’s build-to-order software, prices $1000. OWC sells its 128GB improve equipment — which gives customers with DOUBLE the RAM — for $1099, or simply $99 greater than Apple’s 64GB configuration. That’s insane, and actually exhibits how loopy Apple’s reminiscence costs proceed to be. I extremely advocate that you just keep away from upgrading reminiscence throughout the build-to-order configuration course of, and use appropriate third-party reminiscence from a good vendor.

Apple expenses some huge cash for RAM upgrades

Necessities for RAM

For the 2019 27-inch 5K iMac, Apple notes that you just’ll need to use reminiscence modules that meet the next specs:

  • PC4-21333
  • Unbuffered
  • Nonparity
  • 260-pin
  • 2666MHz DDR4 SDRAM

OWC sells varied reminiscence configurations that meet the aforementioned standards. In fact, you don’t have to make use of OWC reminiscence, however their reminiscence has been verified to work with the 2019 (Mannequin ID 19,1) 27-inch 5K iMac, and it’s backed by a lifetime guarantee.

5K iMac RAM improve video tutorial

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Easy methods to improve 2019 27-inch 5K iMac RAM

Notice: Please remember that this tutorial is for the 27-inch 5K iMac (2019), 21.5-inch models feature unsoldered RAM, however the reminiscence just isn’t thought-about to be user-replaceable by Apple. Contact Apple, or a licensed service middle to improve the RAM in your 21.5-inch iMac (2017+ fashions solely).

Step 1: Energy down your 27-inch 5K iMac and unplug all cables from the chassis, together with the facility cable.

Step 2: Place a comfortable, non-abrasive towel on a flat floor so to relaxation the 27-inch iMac face down with out scratching or inflicting harm to the show. Ensure that you’ve loads of working house.

Step 3: Beneath the facility port, you’ll discover a button for ejecting the RAM slot cowl. Press the button firmly to eject the RAM slot cowl. Take away the quilt and place it apart.

Step 4: Relying in your iMac configuration, there could also be two or extra SO-DIMM slots in use. Push the levers out to unlock the SO-DIMM slots.

Step 5: If you happen to bought a package deal of 4 SO-DIMM modules, resembling on this instance when putting in 128GB of reminiscence, you’ll have to take away the entire current modules. If you happen to bought simply two modules, you’ve the choice of conserving the present pair. Make sure to insert the brand new modules with the  notch dealing with in the direction of the left. Push the reminiscence into the slot in order that it snaps into place.

If you happen to’re solely utilizing two reminiscence modules, resembling a 64GB (32GB x 2) configuration, set up the modules in pairs with the intention to benefit from twin channel reminiscence. On this case, you’ll need to set up the pair of RAM modules within the financial institution zero and financial institution 2 or financial institution 1 and financial institution 3.

Step 6: Push the levers again all the way down to lock the modules into their SO-DIMM slots.

Step 7: Reinstall the RAM slot cowl that you just eliminated in step 3.

Step 8: Place your 5K iMac again in your desktop, reconnect all cables, and energy it on. You may even see a black display screen for an prolonged time frame as the brand new reminiscence is initialized.

Step 9: As soon as macOS is booted, go to  → About This Mac → Reminiscence, and make it possible for the entire put in RAM is accounted for.

128GB of RAM within the 2019 5K iMac

9to5Mac’s take

Apple’s reminiscence costs have all the time been notoriously excessive, and the brand new 2019 5K iMac does nothing to alter this notion. Customers wishing to improve to 64GB of RAM, the utmost quantity of RAM utilizing Apple’s build-to-order configuration, must be ready to fork over $1000 for the privilege.

However it’s not nearly worth. Apple doesn’t even permit customers to configure the utmost quantity of RAM — 128GB — that the 5K iMac is able to supporting. Clearly 128GB of RAM is overkill for a lot of customers, however those that usually use reminiscence hungry functions — 3D graphics rendering apps, Google Chrome (hah!), and so forth. Consider it or not, that a lot RAM could make a distinction for sure workflows, simply ask these iMac Professional customers who’ve dropped over 5 grand to configure their machines with 256GB of RAM.

The truth that you possibly can order 128GB of RAM for simply $99 greater than the price of half that RAM quantity makes it an all of the extra spectacular improve. Plus you may all the time promote the 8GB of base reminiscence included with the 5K iMac should you select to go that route. It can save you a lot of cash on lesser configurations as effectively. As an illustration, 64GB of RAM in a (16GB x 4) configuration prices lower than half ($450) of the $1000 that Apple expenses.

I all the time advocate configuring the smallest quantity of RAM attainable on the 27-inch 5K iMac with the intention to lower your expenses. You’ll be able to then use the cash that you just save with the intention to improve the CPU to the high-end 3.6GHz 8-core Intel Core i9, or use it for upgrading the Fusion drive to a sooner inside SSD. The wonderful thing about the 5K iMac is you can all the time improve the RAM afterward down the road should you occur to want it.

What do you assume? Is it the course of knowledge to go the third-party route relating to RAM upgrades? Hold forth down under within the feedback along with your ideas.


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