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Green 288-pin DDR4 LRDIMM module, no heat spreader

A-Tech

A-Tech 64GB DDR4 2666 ECC LRDIMM 288-Pin memory upgrade for iMac Pro 27 2017

SKU CH-VPZZ-A74Q3

A 64GB DDR4 2666 ECC LRDIMM module with 288 pins, designed for the iMac Pro 27 from 2017

  • Capacity64GB
  • SpeedDDR4 2666 (PC4 21300)
  • Voltage1.20V
  • ECCYes
  • Buffered/RegisteredLoad Reduced
  • Rank4Rx4
  • 64 GB capacity lets iMac Pro 2017 handle heavier workloads
  • DDR4 2666 MHz speed matches factory spec for A1862 EMC 3144
  • ECC Load Reduced design protects data integrity on iMacPro1,1
  • Single 288-pin LRDIMM module installs in one slot
  • 20 V operation keeps power draw low for Apple Mac systems

Targeted Mac Pro upgrade

This 64GB DDR4 2666 ECC LRDIMM module is built specifically for the 27-inch iMac Pro released in 2017. It matches the factory memory specification for model A1862 and order number MQ2Y2LL/A. The single stick delivers 64GB of error-correcting capacity in a 288-pin form factor.

Build integration

The module runs at 1.20V and uses a load-reduced 4Rx4 organisation to maintain signal integrity on the iMac Pro memory bus. No heat spreader is fitted, so the original cooling layout remains unchanged. Installation uses the existing SO-DIMM slots accessible behind the rear cover.

Ideal use cases

Suited for owners of the Late 2017 iMac Pro who need maximum memory for virtualization, large media timelines or scientific workloads. Not suited for standard iMac models, Mac Pro towers or any system that requires unbuffered UDIMM modules.

Puntos fuertes

  • 64 GB capacity lets iMac Pro 2017 handle heavier workloads
  • DDR4 2666 MHz speed matches factory spec for A1862 EMC 3144
  • ECC Load Reduced design protects data integrity on iMacPro1,1
  • Single 288-pin LRDIMM module installs in one slot
  • 20 V operation keeps power draw low for Apple Mac systems

Especificaciones

BrandA-Tech
SeriesA-Tech DDR4 Apple Mac RAM Memory Upgrades
Capacity64GB
SpeedDDR4 2666 (PC4 21300)
Voltage1.20V
ECCYes
Buffered/RegisteredLoad Reduced
Rank4Rx4
ChipsetMajor Brand Chipset
Heat SpreaderNo
Compatible SystemApple Mac Systems
FeaturesMajor Brand Chips

Preguntas sobre este artículo

How does the 1.20 V operating voltage affect heat output during all-day workloads?

The 1.20 V DDR4 modules run cooler than higher-voltage alternatives, reducing thermal load inside the iMac Pro chassis during sustained use.

Does the 4Rx4 rank configuration limit how many 64 GB modules the iMac Pro 27 2017 can accept?

The iMac Pro 27 2017 supports up to four LRDIMM slots; each 4Rx4 64 GB module counts as four ranks, so total rank limits determine maximum capacity.

Which Apple model identifiers must the iMac Pro already report for this LRDIMM to be recognised?

The module is validated for Apple Model ID iMacPro1,1 and Model Number A1862 (EMC 3144) running the Late 2017 platform.

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