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Four green DDR4 RDIMM modules with silver heat spreaders, 288-pin, 256GB kit

A-Tech

A-Tech 256GB Kit (4x64GB) DDR4 2666 ECC RDIMM Mac Pro 2019 memory upgrade

SKU CH-M1XD-94K4K

256GB DDR4 2666 ECC registered RDIMM kit with four 64GB modules for 2019 Mac Pro tower and rack models

  • Capacity256GB (4 x 64GB)
  • SpeedDDR4 2666 (PC4 21300)
  • Voltage1.20V
  • ECCYes
  • Buffered/RegisteredRegistered
  • ChipsetMajor Brand Chipset
  • 256 GB total capacity from four 64 GB modules
  • DDR4 2666 MHz PC4-21300 registered ECC RDIMM
  • Designed for Mac Pro 2019 tower and rack models
  • 20 V low-voltage operation reduces power draw
  • Tested with major-brand chips for reliability

256GB DDR4 ECC RDIMM Kit for 2019 Mac Pro

This 256GB kit contains four 64GB registered ECC modules built for the Apple Mac Pro 2019 tower and rack models. It targets professionals who need maximum memory capacity for rendering, virtualization or large dataset workloads on supported Xeon systems.

DDR4 2666 Registered ECC

The modules run at DDR4 2666 (PC4-21300) with 1.20V voltage and a 2S2Rx4 rank organisation. Registered ECC buffering and the 288-pin RDIMM form factor are the single specification that determines compatibility with the Mac Pro 7,1 memory architecture.

Sustained Workload Stability Through Registered

Registered ECC circuitry corrects single-bit errors and reduces electrical load on the memory controller during continuous operation. This maintains data integrity and consistent throughput during long render jobs, compile cycles or multi-VM sessions without the errors that unbuffered memory can accumulate.

Puntos fuertes

  • 256 GB total capacity from four 64 GB modules
  • DDR4 2666 MHz PC4-21300 registered ECC RDIMM
  • Designed for Mac Pro 2019 tower and rack models
  • 20 V low-voltage operation reduces power draw
  • Tested with major-brand chips for reliability

Especificaciones

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

Preguntas sobre este artículo

What does the 2666 MHz rating mean once the modules are installed in a Mac Pro 2019?

The memory runs at 2666 MHz (PC4-21300) in the Mac Pro 2019, delivering the rated DDR4 bandwidth for Xeon W-3223 and other supported CPUs.

How does the ECC RDIMM interface affect usable capacity and stability in this system?

ECC Registered DIMMs provide error correction and signal buffering, allowing the Mac Pro 2019 to run all four 64 GB modules reliably at full density.

What physical slot and module dimensions are required for this 288-pin RDIMM kit to fit?

Each module is a standard 288-pin DDR4 RDIMM; the Mac Pro 2019 (MacPro7,1) provides compatible DIMM slots for direct installation.

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