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Two green DDR4 RDIMM sticks without heat spreaders, 64GB kit for 2017 iMac Pro

A-Tech

A-Tech 64GB Kit (2x32GB) DDR4 2666MHz ECC RDIMM 288-Pin Memory Upgrade for iMac Pro Late 2017

SKU CH-4QM5-80T4H

Adds 64 GB of DDR4 2666 MHz ECC registered memory in two 32 GB RDIMM modules for the 2017 iMac Pro

  • Capacity64GB (2 x 32GB)
  • SpeedDDR4 2666 (PC4 21300)
  • Voltage1.20V
  • ECCYes
  • Buffered/RegisteredRegistered
  • Rank2Rx4
  • 64GB capacity handles heavy multitasking with 2x32GB modules
  • DDR4 2666MHz speed accelerates data-intensive workflows
  • ECC registered design protects data integrity for professional use
  • 288-pin RDIMM form factor fits iMac Pro Late 2017
  • 20V operation delivers stable performance at low voltage

64GB DDR4 ECC RDIMM kit for iMac Pro Late 2017

This 64GB kit contains two 32GB DDR4 2666MHz ECC registered DIMMs built for the Apple iMac Pro (Retina 5K, 27-inch, Late 2017). The modules run at 1.20V and use a 288-pin RDIMM form factor with 2Rx4 rank organisation. They match Apple order number MQ2Y2LL/A and model identifiers iMacPro1,1 and A1862 (EMC 3144).

Who this suits and who should look elsewhere

This memory suits owners of the listed iMac Pro who need 64GB of ECC registered DDR4 at the factory speed. It will not fit systems that require unbuffered UDIMMs, non-ECC modules, a different pin count, a different voltage or a higher or lower data rate. Buyers needing more than 64GB or a different form factor should look elsewhere.

The deciding specification — ECC registered RDIMM

The single specification that decides fitment is the ECC registered RDIMM design. The iMac Pro Late 2017 requires registered ECC DDR4 at 2666/2667MHz (PC4-21300) in a 288-pin package; unbuffered or non-ECC memory will not work in this system.

Points forts

  • 64GB capacity handles heavy multitasking with 2x32GB modules
  • DDR4 2666MHz speed accelerates data-intensive workflows
  • ECC registered design protects data integrity for professional use
  • 288-pin RDIMM form factor fits iMac Pro Late 2017
  • 20V operation delivers stable performance at low voltage

Caractéristiques

BrandA-Tech
SeriesA-Tech DDR4 Apple Mac RAM Memory Upgrades
Capacity64GB (2 x 32GB)
SpeedDDR4 2666 (PC4 21300)
Voltage1.20V
ECCYes
Buffered/RegisteredRegistered
Rank2Rx4
ChipsetMajor Brand Chipset
Heat SpreaderNo
Compatible SystemApple Mac Systems
FeaturesMajor Brand Chips

Questions sur cet article

How much heat and power does the 1.20V DDR4 2666 kit draw during all-day workloads?

The modules run at 1.20V without a heat spreader, so power draw stays low and thermals rely on the iMac Pro's internal airflow rather than active cooling.

What must the iMac Pro already have for this 64GB 288-pin RDIMM kit to work?

Your iMac Pro (Late 2017) needs four free DDR4 RDIMM slots and a firmware version that recognises ECC registered 2Rx4 modules at 2666MHz.

Will the ECC registered 2Rx4 sticks run alongside the original Apple memory in my 2017 iMac Pro?

Yes — the kit matches the factory DDR4 2666 ECC RDIMM spec, so it can populate the remaining slots while the original modules stay installed.

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