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Eight green DDR4 LRDIMM modules with black chips, no heat spreaders

NEMIX RAM

NEMIX RAM 512GB (8x64GB) DDR4 2933 ECC LRDIMM Mac Pro Rack 2020 memory upgrade

SKU CH-5D27-REG93

Eight 64 GB DDR4 2933 ECC load-reduced DIMMs totalling 512 GB for the 2020 Mac Pro Rack

  • Total capacity512 GB (8 × 64 GB)
  • Rated speedDDR4 2933 (PC4 23400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL21
  • Buffer typeLoad Reduced
  • Rated voltage1.2 V
  • 512 GB total capacity from eight 64 GB modules
  • DDR4 2933 speed rated at PC4-23400 bandwidth
  • ECC load-reduced DIMM architecture protects data integrity
  • 2 V operating voltage lowers power draw
  • Validated for Apple Mac Pro Rack 2020 systems

Mac Pro Rack 2020 memory kit

This 512GB kit supplies eight 64GB DDR4 2933 ECC LRDIMM modules built for the Apple Mac Pro Rack 2020. It targets professionals who need maximum memory capacity for virtualization, rendering or large dataset workloads on this specific workstation.

Tool-free DIMM installation

The Mac Pro Rack 2020 uses a slide-out tray with tool-free DIMM slots, so the modules seat in minutes without screws or cables. The only common issue is mixing LRDIMM with standard RDIMM; the system requires all slots to be populated with identical load-reduced modules for stability.

DDR4 2933 bandwidth ceiling

The PC4-23400 interface caps theoretical throughput at the rated 2933 MT/s, so memory-bound tasks cannot exceed this bandwidth regardless of CPU core count. ECC and load-reduced buffering add latency overhead that slightly reduces effective throughput compared to unbuffered DDR4 at the same clock.

How it compares

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

Price $2,347.99
Pricier than about 70% 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 $4.59 per GB
Cheaper than about 81% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameNEMIX RAM
Product lineApple Mac Pro Compatible Series Memory
Model nameApple DDR4 2933 MHz ECC LRDIMM Load Reduced Server Memory
Part numberML23400-944K8
Total capacity512 GB (8 × 64 GB)
Product type288-Pin DDR4 LRDIMM
Performance
Rated speedDDR4 2933 (PC4 23400)
Processor
ChipsetMajor OEM Samsung, Micron, Hynix
Memory
CAS latencyCL21
ECC supportYes
Buffer typeLoad Reduced
Heat spreaderNo
Memory rank4Rx4
Power
Rated voltage1.2 V
Compatibility
Compatible systemsApple
In the box
Included items512 GB (8 × 64 GB) DDR4 2933 MHz PC4-23400 4Rx4 1.2 V CL21 288-PIN ECC LRDIMM Load Reduced Server Memory KIT

Questions about this item

How can I confirm the 512GB kit is running at 2933 MHz with ECC after installation?

Open System Report on macOS and check the Memory section; each of the eight slots should show a 64GB DDR4 ECC LRDIMM at 2933 MHz with 4Rx4 organisation.

What ships in the box and is anything else required for the Mac Pro Rack 2020?

The box contains eight 64GB 288‑pin DDR4 ECC LRDIMM modules; no extra parts or tools are needed for the Mac Pro Rack 2020.

Why choose the 512GB 8×64GB kit instead of a smaller capacity for this workstation?

The 512GB kit fills all eight memory channels with matched 4Rx4 LRDIMMs, giving maximum bandwidth and capacity for the Mac Pro Rack 2020.

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