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Twelve silver 288-pin DDR4 RDIMM modules in anti-static tray

A-Tech

A-Tech 768GB Kit (12x64GB) DDR4 2666 ECC RDIMM memory upgrade for Apple Mac Pro 2019

SKU CH-KPNG-SS9HA

A 768 GB DDR4 2666 ECC registered 12-module kit designed for the 2019 Apple Mac Pro tower and rack models

  • Capacity768GB (12 x 64GB)
  • SpeedDDR4 2666 (PC4 21300)
  • Voltage1.20V
  • ECCYes
  • Buffered/RegisteredRegistered
  • ChipsetMajor Brand Chipset
  • 768 GB total capacity with twelve 64 GB modules
  • DDR4 2666 MHz registered ECC for error-corrected stability
  • 20 V low-voltage operation reduces power draw
  • Designed for Apple Mac Pro 2019 tower and rack models
  • Validated with MacPro7,1 and EMC 3413 / 3203 identifiers

768GB DDR4 ECC RDIMM kit for Mac Pro 2019

This 768GB kit contains twelve 64GB DDR4 2666 modules built to the PC4-21300 standard. It is designed specifically for the Apple Mac Pro 2019 tower and rack models identified as MacPro7,1. The registered ECC design targets professionals who need maximum memory capacity for large datasets and virtualisation workloads.

Thermals noise and power draw at 1.20V

Each module operates at 1.20 volts, the standard DDR4 voltage, keeping power draw low for a high-density 12-module configuration. Registered buffering reduces electrical load on the Mac Pro memory controller, which helps maintain stable temperatures inside the system's thermal zones. No additional cooling beyond the factory Mac Pro airflow is required for normal operation.

Sustained load behaviour with registered ECC

Under continuous heavy workloads the ECC logic detects and corrects single-bit errors in real time, preventing data corruption during long renders or scientific calculations. The 2Rx4 rank organisation spreads access across the twelve modules, avoiding bottlenecks when all memory channels are saturated. Registered signalling maintains signal integrity across the full 768GB array during extended sessions.

Points forts

  • 768 GB total capacity with twelve 64 GB modules
  • DDR4 2666 MHz registered ECC for error-corrected stability
  • 20 V low-voltage operation reduces power draw
  • Designed for Apple Mac Pro 2019 tower and rack models
  • Validated with MacPro7,1 and EMC 3413 / 3203 identifiers

Caractéristiques

BrandA-Tech
SeriesA-Tech DDR4 Apple Mac RAM Memory Upgrades
Capacity768GB (12 x 64GB)
SpeedDDR4 2666 (PC4 21300)
Voltage1.20V
ECCYes
Buffered/RegisteredRegistered
ChipsetMajor Brand Chipset
Compatible SystemApple Mac Systems
FeaturesMajor Brand Chips

Questions sur cet article

How do I install the 12 RDIMM modules into the 2019 Mac Pro and which slot order is correct?

Power down, open the case, and insert each 64GB DDR4 2666 ECC RDIMM into the 12 DIMM slots following Apple’s recommended population sequence for MacPro7,1.

What maintenance or replacement will this 768GB kit need over its lifetime?

No scheduled maintenance is required; if a module fails it is covered by the manufacturer’s lifetime warranty and can be replaced individually.

What limit appears first when the memory runs under sustained heavy workloads?

The 2666 MHz DDR4 speed and 1.20V voltage set the bandwidth and thermal ceiling for continuous operation.

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