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Two green DDR4 RDIMM sticks with gold contacts and black chips

A-Tech

A-Tech 32GB (2x16GB) DDR4 2666 ECC RDIMM Mac Pro 2019 memory upgrade

SKU CH-KX5S-2CRA1

ECC registered DDR4 RDIMM kit adds 32 GB to Mac Pro 2019 towers and racks

  • Capacity32GB (2 x 16GB)
  • SpeedDDR4 2666 (PC4 21300)
  • Voltage1.20V
  • ECCYes
  • Buffered/RegisteredRegistered
  • ChipsetMajor Brand Chipset
  • 32GB kit boosts multitasking with two 16GB modules
  • DDR4 2666 speed accelerates data throughput for Mac Pro 2019
  • ECC registered design protects data integrity on Xeon workstations
  • 288-pin RDIMM form factor matches Apple Mac Pro 2019 slots
  • Lifetime warranty and US-based support ensure long-term reliability

Mac Pro 2019 memory upgrade

This 32 GB kit contains two 16 GB DDR4 2666 ECC RDIMM modules built for the Mac Pro 2019. The registered design and error-correcting code match the workstation's requirements. It installs in the 288-pin slots and runs at 1.20 V.

Suited for MacPro7,1 owners

The kit fits Mac Pro Tower (A1991, EMC 3203) and Mac Pro Rack (A2304, EMC 3413) systems, including the 3.5 GHz Xeon W-3223 configuration. Buyers who need non-ECC memory or a different form factor should look elsewhere.

Sustained workload behaviour

Registered ECC modules maintain data integrity during long rendering or virtualization sessions. The DDR4 2666 speed delivers consistent throughput without the variability seen in consumer unbuffered memory under continuous load.

Highlights

  • 32GB kit boosts multitasking with two 16GB modules
  • DDR4 2666 speed accelerates data throughput for Mac Pro 2019
  • ECC registered design protects data integrity on Xeon workstations
  • 288-pin RDIMM form factor matches Apple Mac Pro 2019 slots
  • Lifetime warranty and US-based support ensure long-term reliability

Specifications

BrandA-Tech
SeriesA-Tech DDR4 Apple Mac RAM Memory Upgrades
Capacity32GB (2 x 16GB)
SpeedDDR4 2666 (PC4 21300)
Voltage1.20V
ECCYes
Buffered/RegisteredRegistered
ChipsetMajor Brand Chipset
Compatible SystemApple Mac Systems
FeaturesMajor Brand Chips

Questions about this item

Does this kit need anything else installed in the Mac Pro 2019 to work?

No extra parts are required. The 288‑pin RDIMM modules install directly into the Mac Pro 2019 memory slots and run at 1.20V.

Will these DDR4 2666 ECC RDIMMs run with the original 3.5GHz Xeon W‑3223 processor?

Yes. The kit is validated for the 3.5GHz Xeon W‑3223 CPU and the MacPro7,1 platform (A1991 / A2304).

How can I confirm the 32GB kit is recognised at 2666MHz after installation?

Open About This Mac or System Report; it will show 32GB of DDR4 2666/2667 ECC Registered memory.

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