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Twelve green DDR4 LRDIMM sticks without heat spreaders in a tray

NEMIX RAM

NEMIX RAM 768GB (12x64GB) DDR4 2933 ECC LRDIMM Mac Pro Rack 2020 memory upgrade

SKU CH-HTKQ-CGKXZ

A 768GB DDR4-2933 ECC LRDIMM kit of twelve 64GB modules at CL21 1.2V for Mac Pro Rack 2020

  • Total capacity768 GB (12 × 64 GB)
  • Rated speedDDR4 2933 (PC4 23400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL21
  • Buffer typeLoad Reduced
  • Rated voltage1.2 V
  • 768 GB total capacity from twelve 64 GB modules
  • DDR4 2933 speed rated at PC4-23400 bandwidth
  • ECC load-reduced DIMMs protect data integrity under load
  • CL21 latency at 1.2 V for efficient operation
  • Designed for Apple Mac Pro Rack 2020 compatibility

Mac Pro Rack 2020 memory kit

This 768GB kit contains twelve 64GB DDR4 2933 ECC LRDIMM modules built for the Apple Mac Pro Rack 2020. The load-reduced design lowers electrical load on the memory controller while maintaining error correction for data integrity. Modules run at 1.2V with CL21 timing and use major OEM chips from Samsung Micron or Hynix. The 288-pin form factor matches the workstation's DIMM slots exactly.

Workstations needing maximum ECC capacity

Suits users who need the full 768GB configuration supported by Mac Pro Rack 2020 for memory-intensive workloads such as large dataset processing or virtualisation. Not for buyers who want non-ECC memory or standard RDIMM modules because this kit uses load-reduced ECC LRDIMM only. Not for systems that cannot accept 4Rx4 organisation or DDR4 2933 speed. Not for builds that require heat spreaders on every module.

12 x 64GB 4Rx4 LRDIMM organisation

The quad-rank 4Rx4 layout across twelve modules is the specific configuration that determines compatibility with the Mac Pro Rack 2020 memory architecture. Each module delivers 64GB at DDR4 2933 with ECC and load-reduced buffering at 1.2V. Verify that your workstation accepts 4Rx4 LRDIMM population rules before purchase because other rank organisations will not work in this system.

How it compares

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

Price $3,426.99
Pricier than about 74% of the 21,161 comparable items (median $397.99).
Total capacity 768 GB (12 × 64 GB)
Higher than about 92% of the 20,941 comparable items (median 32 GB).
Price per GB $4.46 per GB
Cheaper than about 82% 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 nameNEMIX RAM
Product lineApple Mac Pro Compatible Series Memory
Model nameApple DDR4 2933 MHz ECC LRDIMM Load Reduced Server Memory
Part numberML23400-944K12
Total capacity768 GB (12 × 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 items768 GB (12 × 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

What DDR4 speed and PC4 rating does this 12-module kit run at?

The kit operates at DDR4 2933 MT/s with a PC4-23400 data rate.

What slot count and pin layout does the Mac Pro Rack 2020 require for this 768 GB kit?

The Mac Pro Rack 2020 provides 12 DIMM slots; each module is a 288-pin DDR4 LRDIMM.

How are the 12 LRDIMMs installed in the Mac Pro Rack 2020, and what step is often missed?

Open the memory bay, release the latches, align the notch on each 288-pin module, press firmly until both latches click, then verify all 12 slots are populated in the order shown in the owner's manual.

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