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Four green DDR4 RDIMM sticks with black chips, no heat spreaders

A-Tech

A-Tech 64GB (4x16GB) DDR4 2666MHz ECC RDIMM 288-Pin Memory Upgrade

SKU CH-5VDW-RDR48

64 GB kit of four 16 GB DDR4 2666 MHz ECC registered DIMMs for iMac Pro (Late 2017)

  • Total capacity64 GB (4 × 16 GB)
  • Rated speedDDR4 2666 (PC4 21300)
  • ChipsetMajor Brand Chipset
  • Rated voltage1.2 V
  • Buffer typeRegistered
  • Memory rank2Rx8
  • 64 GB total capacity with four 16 GB modules
  • DDR4 2666 MHz speed for faster data transfer
  • ECC registered design detects and corrects memory errors
  • 288-pin RDIMM form factor fits compatible Apple iMac Pro systems
  • 20 V low voltage operation reduces power consumption

A-Tech 64GB DDR4 ECC RDIMM Kit

This 64GB kit contains four 16GB DDR4 2666MHz ECC Registered DIMM modules built for the Apple iMac Pro (Late 2017). It targets professionals who need maximum memory capacity for demanding workloads such as video editing, 3D rendering, or virtualisation on this specific workstation platform.

Upgrading from lower-capacity factory memory

The kit replaces the original lower-density modules to reach the full 64GB supported by the iMac Pro (Late 2017). The jump is worthwhile when your current memory limits multitasking or causes excessive swapping during heavy creative or computational tasks.

Tool-free installation with slot population care

Installation requires opening the iMac Pro chassis and seating each 288-pin RDIMM into the four available slots until the latches click. The most common issue is incomplete insertion or mixing module ranks, which can prevent the system from recognising the full 64GB capacity.

How it compares

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

Price $536.99
Typical for this category: the median of 21,161 items is $397.99.
Total capacity 64 GB (4 × 16 GB)
Higher than about 60% of the 20,941 comparable items (median 32 GB).
Price per GB $8.39 per GB
Typical for this category: the median of 20,941 items is $8.19 per GB.

New to this? Buying memory and SSDs with crypto — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Brand nameA-Tech
Product lineA-Tech DDR4 Apple Mac RAM Memory Upgrades
Total capacity64 GB (4 × 16 GB)
Performance
Rated speedDDR4 2666 (PC4 21300)
Processor
ChipsetMajor Brand Chipset
Memory
ECC supportYes
Buffer typeRegistered
Memory rank2Rx8
Heat spreaderNo
Power
Rated voltage1.2 V
Compatibility
Compatible systemsApple Mac Systems

Questions about this item

Will the 288-pin RDIMM modules fit the iMac Pro Late 2017 memory slots?

Yes, the 288-pin DDR4 RDIMM form factor matches the iMac Pro (Late 2017) memory slots exactly.

What is the correct order to install the four 16GB modules in the iMac Pro?

Install one module in each of the four slots; the common mistake is leaving a slot empty or mixing capacities, which prevents the system from recognising the full 64GB.

When should the ECC registered memory be tested or replaced in this iMac Pro?

Run a memory diagnostic if the system shows unexpected reboots or data errors; ECC registered modules rarely fail, but a lifetime warranty covers replacement if errors persist.

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