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Two green DDR4 RDIMM sticks with gold contacts and black chips

A-Tech

A-Tech 64GB Kit (2x32GB) DDR4 2666 ECC RDIMM Memory Upgrade for Mac Pro 2019

SKU CH-5P53-2RWD3

ECC registered DDR4 2666 RDIMM kit adds 64 GB across two 32 GB modules for Mac Pro 2019

  • Total capacity64 GB (2 × 32 GB)
  • Rated speedDDR4 2666 (PC4 21300)
  • ChipsetMajor Brand Chipset
  • Rated voltage1.2 V
  • Buffer typeRegistered
  • Compatible systemsApple Mac Systems
  • 64GB capacity handles demanding workloads with 2x32GB modules
  • DDR4 2666 speed matches Mac Pro 2019 specifications
  • ECC registered design protects data integrity for professional use
  • 288-pin RDIMM form factor installs directly in Mac Pro 7,1
  • Major brand chips ensure reliable performance in Apple systems

Mac Pro 2019 ECC RDIMM Kit

This 64GB kit contains two 32GB DDR4 2666 ECC registered DIMMs built for the 2019 Mac Pro tower and rack models. It targets professionals who need error-correcting memory for stable workstation workloads on Apple MacPro7,1 systems.

Straightforward DIMM installation

Modules slot into the 288-pin RDIMM sockets on the Mac Pro memory tray without tools. The registered design requires all slots to follow Apple population rules; mixing registered and unbuffered DIMMs will prevent boot.

64GB capacity for heavy multitasking

Two 32GB modules deliver 64GB total at 1.20V, handling large datasets, virtual machines and multi-application workflows. Workloads that exceed 64GB will page to storage, so buyers planning sustained memory pressure beyond this limit should consider higher-capacity configurations.

How it compares

Measured against everything we stock in Model-Specific Memory Upgrades, at today’s prices. Recalculated every night.

Price $257.99
Cheaper than about 56% of the 21,161 comparable items (median $397.99).
Total capacity 64 GB (2 × 32 GB)
Higher than about 60% of the 20,941 comparable items (median 32 GB).
Price per GB $4.03 per GB
Cheaper than about 84% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameA-Tech
Product lineA-Tech DDR4 Apple Mac RAM Memory Upgrades
Total capacity64 GB (2 × 32 GB)
Performance
Rated speedDDR4 2666 (PC4 21300)
Processor
ChipsetMajor Brand Chipset
Memory
ECC supportYes
Buffer typeRegistered
Power
Rated voltage1.2 V
Compatibility
Compatible systemsApple Mac Systems

Questions about this item

How can I verify the 64GB kit is running at 2666 MHz with ECC after installing it in my Mac Pro 2019?

Open System Information on macOS and check the Memory section; it will show two 32GB DDR4 RDIMM modules at 2666 MHz with ECC Registered status.

What comes in the box and do I need any extra parts for installation?

The box contains two 32GB DDR4 2666 ECC RDIMM modules; no additional parts are required for installation in a compatible Mac Pro.

Which capacity should I choose if my Mac Pro 2019 currently has 32GB installed?

This 64GB kit (2 x 32GB) replaces the existing 32GB and doubles total memory to 64GB using two of the available DIMM slots.

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