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Eight green DDR4 RDIMM sticks with silver heat spreaders in a row

A-Tech

A-Tech 512GB Kit (8x64GB) DDR4 2666 ECC RDIMM Memory Upgrade

SKU CH-K531-8RGM6

Eight 64 GB DDR4 2666 MHz ECC registered RDIMM modules totalling 512 GB for 2019 Apple Mac Pro 8-core tower and rack models

  • Total capacity512 GB (8 × 64 GB)
  • Rated speedDDR4 2666 (PC4 21300)
  • ChipsetMajor Brand Chipset
  • Rated voltage1.2 V
  • Buffer typeRegistered
  • Compatible systemsApple Mac Systems
  • 512GB total capacity from eight 64GB modules
  • DDR4 2666/2667MHz speed for fast data throughput
  • ECC registered design detects and corrects memory errors
  • Built for Apple Mac Pro 2019 (MacPro7,1) systems
  • Lifetime warranty with US-based technical support included

512GB DDR4 ECC RDIMM kit for 2019 Mac Pro

This 512GB kit contains eight 64GB DDR4 2666 registered ECC modules built for the 2019 Apple Mac Pro tower and rack models. It targets professionals who need maximum memory capacity for intensive workloads on supported Xeon platforms.

Verify Mac Pro model ID and slot population

Confirm your system reports MacPro7,1 and matches model numbers A2304 or A1991 before ordering. The kit fills all eight DIMM slots with 288-pin registered modules, so no empty slots remain for future expansion.

Sustained load stability with registered ECC

Registered buffering and ECC correction maintain data integrity during extended rendering, virtualization or scientific compute sessions. The 1.20V modules operate at DDR4 2666 speeds without the error accumulation seen in unbuffered memory under continuous heavy use.

How it compares

Measured against everything we stock in Model-Specific Memory Upgrades, at today’s prices. Recalculated every night.

Price $2,052.99
Pricier than about 69% of the 21,161 comparable items (median $397.99).
Total capacity 512 GB (8 × 64 GB)
Higher than about 90% of the 20,941 comparable items (median 32 GB).
Price per GB $4.01 per GB
Cheaper than about 84% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameA-Tech
Product lineA-Tech DDR4 Apple Mac RAM Memory Upgrades
Total capacity512 GB (8 × 64 GB)
Performance
Rated speedDDR4 2666 (PC4 21300)
Processor
ChipsetMajor Brand Chipset
Memory
ECC supportYes
Buffer typeRegistered
Power
Rated voltage1.2 V
Compatibility
Compatible systemsApple Mac Systems

Questions about this item

What comes in the 512GB kit and is anything else required?

The kit contains eight 64GB DDR4 2666 ECC RDIMM modules. No additional parts are needed; the Mac Pro (2019) has eight slots and this fills them all.

How do I know this 8x64GB DDR4 2666 kit matches my Mac Pro (2019, 8-Core)?

It is validated for MacPro7,1 (models A2304 EMC 3413 and A1991 EMC 3203) with the 3.5GHz Xeon W-3223 processor.

What does the PC4-21300 rating mean once the modules are installed?

It confirms each module runs at 2666/2667 MHz with 1.20V, delivering registered ECC bandwidth the Mac Pro memory controller expects.

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