Apple Mac Pro 2019 MacPro7.1

Mac Pro 2019 RAM Upgrades

2019 Mac Pro (7,1) Memory Upgrades from NEMIX RAM™


The new 2019 Apple Mac Pro features the Intel Xeon W processor. Processor configuration is available from 8-core to 28-core and memory configuration is available in 2666MHz for the 8-core machine and 2933MHz memory for the 12-core thru 28-core which is upgradeable up to 1.5 TB of memory. The Mac Pro 2019 features a 6-channel memory controller that supports 12 slots using 2666 or 2933 MHz ECC Load Reduced (LRDIMM) or Registered Memory Modules (RDIMM), however, LRDIMM and RDIMM cannot be mixed. In addition, LRDIMM must all be installed in same size but RDIMM can be mixed.

The Apple Mac Pro 2019 7,1 features a stainless-steel vent holes in front and back. SSD Drives and Radeon Pro 580X graphics card is standard however there are a wide variety of configurations and options with build-to-order systems.

8-Core Processor Mac Pro 2019

3.5GHz Intel Xeon W
8 cores, 16 threads
Turbo Boost up to 4.0GHz
24.5MB cache
Max RAM:  768GB
Speed:  2666MHz DDR4 ECC

12-Core Processor Mac Pro 2019

3.3GHz Intel Xeon
12 cores, 24 threads
Turbo Boost up to 4.4GHz
31.25MB cache
Max RAM: 768GB
Speed: 2933MHz DDR4 ECC

16-Core Processor Mac Pro 2019

3.2GHz Intel Xeon
16 cores, 32 threads
Turbo Boost up to 4.4GHz
38MB cache
Max RAM: 768GB
Speed: 2933MHz DDR4 ECC

24-Core Processor Mac Pro 2019

2.7GHz Intel Xeon
24 cores, 48 threads
Turbo Boost up to 4.4GHz
57MB cache
Max RAM: 1.5TB
Speed: 2933MHz DDR4 ECC

28-Core Processor Mac Pro 2019

2.5GHz Intel Xeon
28 cores, 56 threads
Turbo Boost up to 4.4GHz
66.5MB cache
Max RAM: 1.5TB
Speed: 2933MHz DDR4 ECC

Memory Configurations:

  • 32GB: Four 8GB DIMMs
  • 48GB: Six 8GB DIMMs
  • 96GB: Six 16GB DIMMs
  • 192GB: Six 32GB DIMMs
  • 384GB: Six 64GB DIMMs
  • 768GB: Six 128GB DIMMs or 12 64GB DIMMs
  • 1.5TB: 12 128GB DIMMs *Requires 24-core or 28-core processor.

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MAC PRO 2019 RAM Upgrades Tutorials

Check out this video guide to help you through upgrading your Mac Pro 2019.

How to Install/Replace Mac Pro 2019 Ram

Learn how to remove and install memory in your 2019 Mac Pro

The Mac Pro (2019) has 12 DIMM (memory) slots that support up to 1.5TB (24-core and 28-core processors only) of 2933MHz memory when all 12 slots are full using DDR4 ECC DIMMs. The 8-core, 12-core, and 16-core Mac Pro models support up to 768GB of memory.

Before You Begin

You can use either R-DIMMs or LR-DIMMs with your Mac Pro, but you can't mix these memory types.

To check if you have R-DIMMs or LR-DIMMs installed and view your memory status, choose Apple menu (top left of your screen) > About This Mac, then select the Memory tab.

Check Supported Configurations

Mac Pro supports up to 12 DIMMs installed in configurations of 4, 6, 8, 10, or 12 DIMMs, as shown in the images below. These images can also be found on the inside of the DIMM covers. For maximum performance, install DIMMs in a 6 or 12 DIMM configuration. If you have R-DIMMs that aren't identical in capacity, learn how to install R-DIMMs of mixed capacities, in the section below. Note: each number represents a DIMM slot. For each DIMM configuration, insert DIMMs only into the dark grey slots and leave the light gray slots empty.






Installing R-DIMMs of Mixed Capacities

If you use 32GB DIMMs with other capacities, such as 8GB or 16GB, they must be installed according to these requirements:

  • Use only R-DIMMs
  • Use a supported configuration
  • Install the 32GB DIMMs in the first slot of each channel pair.

Not all memory channels are used for every DIMM configuration. For example, an 8 DIMM configuration uses channels A, B, D, and E.

DIMM Channels

In the image above, the 12 slots on the left form 6 channel pairs as shown on the right. Each channel pair has slots designated DIMM 1 and DIMM 2.

Installing LR-DIMMs of Mixed Capacities

To install LR-DIMMs of mixed capacities, install your DIMMs in the slots determined by your configuration.

Remove or Install Memory

Learn how to remove the housing of your Mac Pro, remove DIMMs, and install DIMMs.

Remove the housing or memory access door

Follow the steps to remove the housing on Mac Pro (2019):

  1. Shut down your Mac Pro 2019
  2. Wait approximately 5-10 minutes for the computer to cool down.
  3. Unplug all cables except the power cord from your computer.
  4. Touch the metal housing on the outside of the Mac Pro to discharge any static electricity, then unplug the power cord. Always discharge static before you touch parts or install components inside your Mac Pro. To avoid generating static, don’t move around the room until you finish installing the memory and slide the enclosure back onto the computer.
  5. Flip the top latch up, then twist left to unlock the housing.
  6. Lift the housing straight up and off of the computer. Carefully set it aside. Mac Pro won't turn on when its cover is removed.

Remove DIMMs

Your Mac Pro ships with DIMMs preinstalled in some or all of the DIMM slots. Before you can install memory, you might need to remove some of the DIMMs to match a supported configuration or to meet mixed capacity R-DIMM installation requirements.

  1. Slide each lock to the left to unlock and open the DIMM covers.
  2. Remove the DIMM covers.
  3. Locate the DIMM(s) that you want to remove. Each slot is labeled with a number. Push down on the DIMM ejectors on each end of the DIMM, which slightly raises the DIMM out of the slot.
  4. Use your thumb and index finger from each hand to gently grip the DIMM at each end, then carefully remove the DIMM by pulling the DIMM straight out of the DIMM slot. Don’t twist or force the DIMM out of the socket or damage might occur.
  5. Place the removed DIMMs into an electrostatic discharge (ESD) protective bag.

Install DIMMs

  1. Locate an empty DIMM slot.
  2. If possible, use canned air to blow dust out of the DIMM slot. Keep the can vertical.
  3. Gently hold the DIMM ends and insert it into the slot. Make sure the DIMM is aligned with the slot before applying any force to insert it. When you insert the DIMM, make sure to follow these guidelines:
    • Don’t force the DIMM. If the DIMM doesn’t insert, verify that the notch and connectors are aligned with the notch in the DIMM slot.
    • Don’t rock the DIMM into the seated position.
    • Don’t bend or twist the DIMM when you insert it.
  4. Insert the DIMM gently until the bottom edge of the DIMM is touching the gold contacts, then apply more force to fully seat the DIMM. The DIMM ejectors click into place once the DIMM is fully seated.
  5. Replace the DIMM covers. Push down on the left side of the covers until they click into place. If you don't replace the DIMM covers, system performance may be affected.

Verify Your Memory

To check the status of your memory, choose Apple menu > About This Mac, then select the Memory tab.

If your DIMMs should be configured in different slots to maximize performance, macOS notifies you with recommendations for which slots to use for your currently installed DIMMs.

All images in the "How to Install/Replace Mac Pro 2019 Ram" section copyright © Apple.