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Four green 288-pin DDR4 RDIMM modules, 64GB each, no heat spreaders

A-Tech

A-Tech 256GB (4x64GB) DDR4 2666 ECC RDIMM iMac Pro Late 2017

SKU CH-6D1Y-RVYMJ

A 256 GB kit of four 64 GB DDR4 2666 ECC registered DIMMs validated for the 27‑inch iMac Pro (Late 2017)

  • Capacity256GB (4 x 64GB)
  • SpeedDDR4 2666 (PC4 21300)
  • Voltage1.20V
  • ECCYes
  • Buffered/RegisteredRegistered
  • Rank2S2Rx4 (4Rx4)
  • 256 GB total capacity with four 64 GB modules
  • DDR4 2666 MHz speed for faster data throughput
  • ECC registered design detects and corrects memory errors
  • 288-pin RDIMM form factor fits iMac Pro Late 2017
  • 20 V operation reduces power draw and heat

256 GB DDR4 2666 ECC RDIMM kit for iMac Pro 2017

This 256 GB kit contains four 64 GB DDR4 2666 ECC registered modules built for the Apple iMac Pro (Retina 5K, 27-inch, Late 2017). It targets creative professionals and developers who need maximum memory capacity for video editing, 3D rendering, virtualisation or large dataset analysis on that specific workstation. The registered design with ECC protects data integrity during sustained heavy workloads.

Check iMac Pro model and slot availability before

Verify your system is the iMac Pro Late 2017 (model ID iMacPro1,1, order number MQ2Y2LL/A, model number A1862 EMC 3144). The machine has four memory slots; this kit fills all of them, so any existing modules must be removed. Confirm the current configuration runs DDR4 2666 RDIMM ECC registered memory at 1.20 V. No other Mac models are supported by this kit.

Replaces lower-capacity or mixed ECC RDIMM sets

This kit replaces the factory-installed memory or any smaller-capacity DDR4 2666 ECC RDIMM modules in the iMac Pro Late 2017. The upgrade is worthwhile when your workload exceeds the current RAM limit and causes swapping, or when you need the full 256 GB for virtual machines, large timelines or scientific computing. It is not for non-Pro iMacs, Mac Pro towers or any system that uses unbuffered SO-DIMM or UDIMM memory.

Puntos fuertes

  • 256 GB total capacity with four 64 GB modules
  • DDR4 2666 MHz speed for faster data throughput
  • ECC registered design detects and corrects memory errors
  • 288-pin RDIMM form factor fits iMac Pro Late 2017
  • 20 V operation reduces power draw and heat

Especificaciones

BrandA-Tech
SeriesA-Tech DDR4 Apple Mac RAM Memory Upgrades
Capacity256GB (4 x 64GB)
SpeedDDR4 2666 (PC4 21300)
Voltage1.20V
ECCYes
Buffered/RegisteredRegistered
Rank2S2Rx4 (4Rx4)
ChipsetMajor Brand Chipset
Heat SpreaderNo
Compatible SystemApple Mac Systems
FeaturesMajor Brand Chips

Preguntas sobre este artículo

What comes in the box and what else is needed?

The box contains four 64 GB DDR4 2666 ECC RDIMM modules for a total of 256 GB; no extra parts or cables are required for installation in the supported iMac Pro.

Which version or capacity should I choose?

This kit provides the maximum 256 GB (4 × 64 GB) supported by the iMac Pro Late 2017; select it when you need the full capacity, otherwise smaller kits are available separately.

What does the 2666 MHz rating mean once installed?

The modules run at DDR4 2666 MHz (PC4-21300) with ECC registered operation at 1.20 V, delivering the rated speed and error correction the iMac Pro expects.

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