We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Two green DDR4 LRDIMM modules, 288-pin, no heat spreader

NEMIX RAM

NEMIX RAM 128GB (2x64GB) DDR4 2933MHz CL21 ECC LRDIMM Apple Mac Pro Rack 2020 memory upgrade

SKU CH-XNYJ-EEFKD

128 GB of DDR4 ECC LRDIMM memory in a 2 × 64 GB kit running at 2933 MHz CL21 for the 2020 Mac Pro Rack

  • Capacity128GB (2 x 64GB)
  • SpeedDDR4 2933 (PC4 23400)
  • ECCYes
  • Buffered/RegisteredLoad Reduced
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • Voltage1.20V
  • 128 GB total capacity from two 64 GB modules
  • DDR4 2933 MHz speed rated at PC4-23400
  • ECC error correction protects data integrity
  • Load Reduced DIMM design lowers electrical load
  • 20 V operation reduces power draw

128GB DDR4 2933 ECC LRDIMM Kit

This 128GB kit consists of two 64GB DDR4 2933MHz CL21 ECC LRDIMM modules built for the Apple Mac Pro Rack 2020. Load-reduced architecture and registered ECC operation deliver the signal integrity and error correction required by macOS workstations running sustained compute workloads. The 1.2V operating voltage matches the platform specification.

Upgrading from lower-capacity or non-ECC DIMMs

Replacing smaller RDIMMs or unbuffered modules with this 4Rx4 LRDIMM kit removes the capacity ceiling that limits virtualisation hosts, large dataset processing and multi-user database services. The jump is worth it when the Mac Pro reports memory pressure or when ECC corrections appear in system logs during production tasks.

Sustained-load behaviour in a Mac Pro Rack

Under continuous load the load-reduced design reduces electrical loading on the memory bus, allowing all twelve slots to remain populated at 2933MHz without down-clocking. ECC scrubbing corrects single-bit errors in real time while the 1.2V supply keeps thermal output predictable inside the Mac Pro’s directed-airflow chassis.

Highlights

  • 128 GB total capacity from two 64 GB modules
  • DDR4 2933 MHz speed rated at PC4-23400
  • ECC error correction protects data integrity
  • Load Reduced DIMM design lowers electrical load
  • 20 V operation reduces power draw

Specifications

BrandNEMIX RAM
SeriesApple Mac Pro Compatible Series Memory
ModelApple DDR4 2933MHZ ECC LRDIMM Load Reduced Server Memory
Part NumberML23400-944K2
Capacity128GB (2 x 64GB)
SpeedDDR4 2933 (PC4 23400)
ECCYes
Buffered/RegisteredLoad Reduced
ChipsetMajor OEM Samsung, Micron, Hynix
Voltage1.20V
Compatible SystemApple
CAS LatencyCL21
Heat SpreaderNo
Type288-Pin DDR4 LRDIMM
Rank4Rx4
FeaturesDDR4 ECC LRDIMM Load Reduced Server Motherboard Compatible
Package Content128GB (2X64GB) DDR4 2933MHZ PC4-23400 4Rx4 1.2V CL21 288-PIN ECC LRDIMM Load Reduced Server Memory KIT

Questions about this item

Does this 288-pin LRDIMM kit fit the Apple Mac Pro Rack 2020 memory slots?

Yes, the 288-pin DDR4 LRDIMM form factor matches the Mac Pro Rack 2020 DIMM slots exactly.

What is the correct way to install the two 64 GB modules so the system recognises all 128 GB?

Insert each module into the paired slots indicated in the Mac Pro Rack memory guide; the common mistake is populating non-paired slots, which leaves half the capacity unseen.

Will the Samsung, Micron or Hynix chips on these ECC LRDIMMs need any firmware updates or periodic replacement?

No firmware updates are required for the DRAM chips; ECC corrects errors in real time, and the modules are rated for continuous operation without scheduled replacement.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.