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Twelve green DDR4 LRDIMM sticks with black heat spreaders and gold contacts

A-Tech

A-Tech 384GB Kit (12x32GB) DDR4 2666/2667MHz ECC LRDIMM memory upgrade for Apple Mac Pro (2019, 8-Core)

SKU CH-5VS0-544H3

A 384GB kit of twelve 32GB DDR4 2666MHz ECC LRDIMM modules for the 2019 Mac Pro 8‑Core

  • Total capacity384 GB (12 × 32 GB)
  • Rated speedDDR4 2666 (PC4 21300)
  • ChipsetMajor Brand Chipset
  • Rated voltage1.2 V
  • Buffer typeLoad Reduced
  • Compatible systemsApple Mac Systems
  • 384GB total capacity from 12 modules of 32GB each
  • DDR4 2666/2667MHz speed rated at PC4-21300
  • ECC Load Reduced LRDIMM for error correction and signal integrity
  • Designed for Apple Mac Pro 2019 8-Core (MacPro7,1)
  • 288-pin form factor with 1.20V operation and major brand chips

Built for Mac Pro 2019 8-Core

This 384GB kit delivers twelve 32GB DDR4 LRDIMM modules validated for the Mac Pro (2019, 8-Core) with model IDs MacPro7,1 and order numbers A2304 and A1991. It targets professionals who need maximum memory capacity for virtualization, large datasets or heavy creative workloads on this specific workstation platform.

Sustained throughput with ECC LRDIMM

Modules run at 2666/2667MHz PC4-21300 with a 1.20V supply and a 2Rx4 organisation. The load-reduced buffer lowers electrical load on the memory controller, helping maintain stable bandwidth during long render, compute or database sessions while ECC corrects single-bit errors on the fly.

Twelve-slot population and major-brand chips

The 288-pin LRDIMM form factor fills every DIMM slot on the 8-Core Mac Pro, leaving no room for further expansion. Major-brand DRAM chips and A-Tech's validation process aim to ensure compatibility with the Xeon W-3223 processor and the system's thermal design across rack and tower configurations.

How it compares

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

Price $2,063.99
Pricier than about 69% of the 21,161 comparable items (median $397.99).
Total capacity 384 GB (12 × 32 GB)
Higher than about 85% of the 20,941 comparable items (median 32 GB).
Price per GB $5.37 per GB
Cheaper than about 72% of the 20,941 comparable items (median $8.19 per GB).

New to this? Buying memory and SSDs with crypto — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Brand nameA-Tech
Product lineA-Tech DDR4 Apple Mac RAM Memory Upgrades
Total capacity384 GB (12 × 32 GB)
Performance
Rated speedDDR4 2666 (PC4 21300)
Processor
ChipsetMajor Brand Chipset
Memory
ECC supportYes
Buffer typeLoad Reduced
Power
Rated voltage1.2 V
Compatibility
Compatible systemsApple Mac Systems

Questions about this item

How much power does the 1.20V DDR4 2666 LRDIMM kit draw when the Mac Pro runs all day?

Each module operates at 1.20 volts; total system draw depends on the Mac Pro power management and the 3.5GHz Xeon W-3223 workload.

What must already be installed for this 12-module kit to work in a Mac Pro 7,1?

A Mac Pro (2019, 8-Core) with model ID MacPro7,1 and the 3.5GHz Xeon W-3223 processor.

Will these 288-pin LRDIMMs run alongside any existing RDIMMs I keep in the Mac Pro?

No — LRDIMM and RDIMM types cannot be mixed; all twelve slots must use matching ECC Load Reduced modules.

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