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Green rectangular DDR4 RDIMM module, 288-pin, no heat spreader

A-Tech

A-Tech 16GB DDR4 2666MHz ECC RDIMM 288-Pin memory upgrade

SKU CH-74BN-STKB8

Adds 16 GB of DDR4 2666 MHz ECC registered memory to the iMac Pro (Late 2017)

  • Capacity16GB
  • SpeedDDR4 2666 (PC4 21300)
  • Voltage1.20V
  • ECCYes
  • Buffered/RegisteredRegistered
  • Rank2Rx8
  • Designed for Apple iMac Pro Late 2017
  • 16GB DDR4 2666MHz ECC Registered RDIMM
  • 288-pin form factor fits compatible Mac systems
  • 20V operation with major brand chipset
  • Single 16GB module 2Rx8 rank configuration

A-Tech 16GB DDR4 2666MHz ECC RDIMM

This 16GB DDR4 2666MHz ECC Registered DIMM is built for the Apple iMac Pro (Retina 5K, 27-inch, Late 2017). It uses a 288-pin RDIMM form factor with 2Rx8 rank organisation and runs at 1.20V. The module targets professionals who need error-correcting memory for data integrity in supported macOS workstations.

Sustained workload behaviour

Registered buffering reduces electrical load on the memory controller, helping stability during extended multi-tasking sessions and large dataset handling. ECC circuitry detects and corrects single-bit errors in real time, preventing silent data corruption that can accumulate over long render, compile or virtualisation runs. The 2666MHz speed maintains consistent throughput without the voltage increases that can shorten component life under continuous duty.

Upgrade path for compatible iMac Pro configurations

This single 16GB module replaces or adds to the factory memory in iMac Pro model iMacPro1,1 (A1862, EMC 3144) matching Apple order number MQ2Y2LL/A. The jump is worthwhile when current capacity limits the number of concurrent virtual machines, the size of in-memory databases or the resolution of cached media frames. Systems already at the maximum supported module count or those requiring non-ECC unbuffered DIMMs cannot use this part.

Points forts

  • Designed for Apple iMac Pro Late 2017
  • 16GB DDR4 2666MHz ECC Registered RDIMM
  • 288-pin form factor fits compatible Mac systems
  • 20V operation with major brand chipset
  • Single 16GB module 2Rx8 rank configuration

Caractéristiques

BrandA-Tech
SeriesA-Tech DDR4 Apple Mac RAM Memory Upgrades
Capacity16GB
SpeedDDR4 2666 (PC4 21300)
Voltage1.20V
ECCYes
Buffered/RegisteredRegistered
Rank2Rx8
ChipsetMajor Brand Chipset
Heat SpreaderNo
Compatible SystemApple Mac Systems
FeaturesMajor Brand Chips

Questions sur cet article

How hot does this 16GB DDR4 2666MHz ECC RDIMM run when the iMac Pro is under load all day?

The module operates at the standard 1.20V DDR4 voltage and has no heat spreader, so it relies on the iMac Pro's internal airflow to stay within normal thermal limits during continuous operation.

What must my iMac Pro already have installed for this 288-pin RDIMM to be recognised?

Your iMac Pro must be the Late 2017 27-inch Retina 5K model (Model ID iMacPro1,1, Model Number A1862, EMC 3144) running macOS with available RDIMM slots; the module is not compatible with standard iMac or Mac Pro systems.

Will this 2Rx8 registered ECC module work alongside the original Apple memory already in my iMac Pro?

Yes, it is designed to match the factory DDR4 2666/2667 MHz PC4-21300 ECC Registered specification, so it will interleave correctly with the original Apple modules in the remaining slots.

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