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Green printed circuit board with black memory chips and gold edge connector

A-Tech

A-Tech 32GB DDR4 2666 ECC LRDIMM 288-Pin Memory Upgrade for Apple iMac Pro (Late 2017)

SKU CH-T94Q-4FMY4

A 32 GB DDR4 2666 ECC LRDIMM module for upgrading the 27-inch iMac Pro (Late 2017)

  • Capacity32GB
  • SpeedDDR4 2666 (PC4 21300)
  • Voltage1.20V
  • ECCYes
  • Buffered/RegisteredLoad Reduced
  • Rank2Rx4
  • 32 GB capacity handles heavy multitasking and large datasets
  • DDR4 2666 MHz speed accelerates data throughput for demanding workflows
  • ECC Load Reduced design detects and corrects memory errors automatically
  • 288-pin LRDIMM form factor fits Apple iMac Pro (Late 2017) exactly
  • Major-brand chips tested to stringent quality standards for reliable operation

System-Specific DDR4 LRDIMM

This 32 GB DDR4 2666 ECC LRDIMM module is built for the Apple iMac Pro (Late 2017). It targets owners of model iMacPro1,1 (A1862, EMC 3144) who need to expand memory capacity with server-grade registered memory. The single 288-pin stick installs directly into the workstation’s DIMM slots.

Thermals and power

Operating at 1.20 V, the module runs at standard DDR4 voltage without a heat spreader. Load-reduced buffering reduces electrical load on the memory controller, helping keep power draw and thermals predictable during sustained workloads. No active cooling is required on the module itself.

Upgrade context

This part replaces or supplements the factory-installed memory in the 2017 iMac Pro when the original capacity limits multitasking or large-dataset work. The jump is worth it when applications exceed the current memory ceiling and the system supports the 2Rx4 ECC LRDIMM configuration. It does not suit non-ECC consumer platforms or earlier iMac models.

Points forts

  • 32 GB capacity handles heavy multitasking and large datasets
  • DDR4 2666 MHz speed accelerates data throughput for demanding workflows
  • ECC Load Reduced design detects and corrects memory errors automatically
  • 288-pin LRDIMM form factor fits Apple iMac Pro (Late 2017) exactly
  • Major-brand chips tested to stringent quality standards for reliable operation

Caractéristiques

BrandA-Tech
SeriesA-Tech DDR4 Apple Mac RAM Memory Upgrades
Capacity32GB
SpeedDDR4 2666 (PC4 21300)
Voltage1.20V
ECCYes
Buffered/RegisteredLoad Reduced
Rank2Rx4
ChipsetMajor Brand Chipset
Heat SpreaderNo
Compatible SystemApple Mac Systems
FeaturesMajor Brand Chips

Questions sur cet article

How do I install the 288-pin LRDIMM into the iMac Pro (Late 2017) and which step is often missed?

Power down, unplug, and lay the iMac face-down on a soft cloth. Remove the memory access door using the button. Insert the module until the ejectors click. The step often missed is pressing firmly on both ends until the ejectors lock automatically.

Will the ECC Load Reduced memory need any firmware updates or periodic replacement?

No firmware updates are required for the memory itself. The module has no moving parts and no heat spreader, so it does not wear out under normal use. Replacement is only needed if a hardware fault appears.

What is the first limit reached when the 32GB DDR4 2666 module runs sustained workloads?

The memory operates at 1.20V with a 2Rx4 rank configuration. Under sustained heavy load the first limit is the DDR4 2666 speed ceiling; the module cannot exceed its rated 2666 MT/s data rate.

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