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Green rectangular DDR4 RDIMM module with black chips, no heat spreader, 288 gold contacts

A-Tech

A-Tech 8GB DDR4 2666MHz ECC RDIMM 288-Pin for iMac Pro (Late 2017) memory upgrade

SKU CH-NRF1-TVG0H

8GB DDR4 2666MHz ECC registered RDIMM upgrade for the 27-inch iMac Pro (Late 2017)

  • Capacity8GB
  • SpeedDDR4 2666 (PC4 21300)
  • Voltage1.20V
  • ECCYes
  • Buffered/RegisteredRegistered
  • Rank1Rx8
  • 8GB capacity lets you run more apps simultaneously with DDR4 2666MHz speed
  • ECC registered design detects and corrects data errors for stable workloads
  • 288-pin RDIMM form factor installs directly into iMac Pro Late 2017 slots
  • 20V operation reduces power draw while maintaining performance
  • Tested with major-brand chips for reliable operation in Apple A1862 systems

8GB DDR4 ECC RDIMM for iMac Pro 2017

This 8GB DDR4 2666MHz registered ECC module is built specifically for the Apple iMac Pro (Late 2017) model A1862. It targets owners of that workstation who need to add memory capacity using Apple-validated components. The 288-pin RDIMM form factor ensures correct electrical and mechanical fit for the system's memory slots.

Single module capacity with registered ECC headroom

The single 8GB rank operates at 1.20V with PC4-21300 speed ratings of 2666/2667 MHz. Registered buffering and ECC provide stability for sustained workloads such as rendering, virtualization or large dataset processing. Capacity scales by populating additional slots; the module itself adds no headroom beyond its 8GB density.

Replaces or supplements factory memory in iMac Pro

This module matches the original DDR4 ECC RDIMM specification used in the iMacPro1,1 (EMC 3144). It is worth installing when the system shows memory pressure under professional workloads or when the factory configuration left slots unpopulated. It does not serve machines that require unbuffered UDIMMs or non-ECC memory.

Points forts

  • 8GB capacity lets you run more apps simultaneously with DDR4 2666MHz speed
  • ECC registered design detects and corrects data errors for stable workloads
  • 288-pin RDIMM form factor installs directly into iMac Pro Late 2017 slots
  • 20V operation reduces power draw while maintaining performance
  • Tested with major-brand chips for reliable operation in Apple A1862 systems

Caractéristiques

BrandA-Tech
SeriesA-Tech DDR4 Apple Mac RAM Memory Upgrades
Capacity8GB
SpeedDDR4 2666 (PC4 21300)
Voltage1.20V
ECCYes
Buffered/RegisteredRegistered
Rank1Rx8
ChipsetMajor Brand Chipset
Heat SpreaderNo
Compatible SystemApple Mac Systems
FeaturesMajor Brand Chips

Questions sur cet article

Will this DDR4 2666MHz ECC RDIMM work alongside the original Apple memory already installed in my iMac Pro (Late 2017)?

Yes, this module matches the factory specifications for iMacPro1,1 (A1862, EMC 3144) including DDR4 2666/2667 MHz, PC4-21300, ECC Registered, 1.20V and 288-pin RDIMM form factor, so it will operate correctly with the original memory.

How can I verify the module is running at the correct 2666MHz speed and ECC Registered mode after installation?

Open System Report in macOS, select Memory, and confirm the module shows 8 GB, DDR4, 2667 MHz, ECC: Yes, and Type: RDIMM.

Does the package include only the single 8GB stick, or are tools or additional brackets supplied for the iMac Pro installation?

The box contains one 8GB DDR4 2666MHz ECC RDIMM 288-pin module; no tools, brackets or extra components are included.

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