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Four green DDR4 RDIMM sticks with black chips and gold contacts

NEMIX RAM

NEMIX RAM 128GB (4x32GB) DDR4 2666 ECC RDIMM iMac Pro 2017-2021 memory upgrade

SKU CH-8TFM-5SCR4

128 GB kit of four 32 GB DDR4-2666 ECC registered DIMMs validated for Apple iMac Pro 2017-2021

  • Capacity128GB (4 x 32GB)
  • SpeedDDR4 2666 (PC4 21300)
  • ECCYes
  • Buffered/RegisteredRegistered
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • Voltage1.20V
  • 128 GB total capacity across four 32 GB modules
  • DDR4 2666 speed rated at PC4 21300 for iMac Pro
  • ECC registered design protects data integrity under load
  • 2 V operation at CL19 latency for stable performance
  • Built with major OEM chips and stress tested for reliability

128GB DDR4 ECC RDIMM kit for iMac Pro

This 128GB kit contains four 32GB DDR4 2666 ECC registered DIMMs built for the Apple iMac Pro 2017-2021. The modules run at 1.2V with CL19 latency and use major OEM chips from Samsung, Micron or Hynix. It is a system-specific memory upgrade designed for the iMacPro1,1 platform.

Suits iMac Pro owners needing maximum ECC capacity

Professionals running virtual machines, large datasets or memory-intensive creative workloads on a compatible iMac Pro will benefit from the full 128GB configuration. Users whose iMac Pro already contains factory memory that cannot be mixed with registered DIMMs, or who only need a smaller capacity increase, should look at a different kit.

288-pin DDR4 2666 registered ECC specification

The decisive factor is the 288-pin DDR4 2666 registered ECC RDIMM form factor with 2Rx4 organisation and 1.2V operation. Only systems that explicitly support registered ECC DDR4 at this speed and pin layout can use these modules; standard unbuffered DDR4 or non-ECC memory will not work.

Points forts

  • 128 GB total capacity across four 32 GB modules
  • DDR4 2666 speed rated at PC4 21300 for iMac Pro
  • ECC registered design protects data integrity under load
  • 2 V operation at CL19 latency for stable performance
  • Built with major OEM chips and stress tested for reliability

Caractéristiques

BrandNEMIX RAM
SeriesApple iMac/Mac Mini Compatible Series Memory
ModelApple DDR4 2666MHZ ECC RDIMM Registered Server Memory
Part NumberMR21300-324K4
Capacity128GB (4 x 32GB)
SpeedDDR4 2666 (PC4 21300)
ECCYes
Buffered/RegisteredRegistered
ChipsetMajor OEM Samsung, Micron, Hynix
Voltage1.20V
Compatible SystemApple
CAS LatencyCL19
Heat SpreaderNo
Type288-Pin DDR4 RDIMM
Rank2Rx4
FeaturesDDR4 ECC Registered RDIMM Server Motherboard Compatible
Package Content128GB (4X32GB) DDR4 2666MHZ PC4-21300 2Rx4 1.2V CL19 288-PIN ECC RDIMM Registered Server Memory KIT

Questions sur cet article

Will the 288-pin RDIMM modules fit the iMac Pro 2017-2021 memory slots?

Yes, the kit is built for iMacPro1,1 and uses the 288-pin DDR4 RDIMM form factor required by that model.

What is the correct installation sequence for the four 32 GB sticks?

Populate all four slots with matching 2Rx4 modules; the common mistake is mixing ranks or leaving a slot empty, which prevents boot.

How do I know when a module needs replacement?

ECC will log correctable errors; rising error counts or repeated kernel panics under load indicate a stick should be swapped.

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