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Four green DDR4 ECC UDIMM modules without heat spreaders

NEMIX RAM

NEMIX RAM 128GB (4 x 32GB) DDR4 2933MHz ECC UDIMM memory upgrade

SKU CH-KASY-Y18ZX

128 GB DDR4-2933 ECC UDIMM kit (4 × 32 GB, CL21, 1.2 V, 2Rx8) validated for Supermicro X12SAE and X12SCA-F motherboards

  • Total capacity128 GB (4 × 32 GB)
  • Rated speedDDR4 2933 (PC4 23400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL21
  • Rated voltage1.2 V
  • Buffer typeUnbuffered

Size 128GB 4X32GB

  • 128 GB kit lets workstations handle large datasets
  • ECC protection corrects single-bit errors automatically
  • DDR4 2933 MHz matches Supermicro X12SAE and X12SCA-F specs
  • Unbuffered 288-pin UDIMM installs directly in motherboard slots
  • 2 V CL21 2Rx8 modules run at rated speed without tuning

Exact-fit DDR4 ECC kit for Supermicro

This 128 GB kit provides four 32 GB DDR4 2933 MHz ECC unbuffered UDIMMs built to the precise rank, voltage and timing the Supermicro X12SAE and X12SCA-F motherboards expect. It is aimed at administrators and workstation builders who need verified, full-capacity operation on those specific platforms without manual tuning.

Thermals and power draw

Each module runs at 1.2 V with no heat spreader, so power draw stays low and thermal output is minimal under normal server or workstation loads. Passive cooling in a chassis with adequate airflow is sufficient; the sticks add no audible noise because they have no moving parts.

288-pin unbuffered ECC UDIMM form factor

The kit uses the 288-pin unbuffered ECC UDIMM layout required by the target Supermicro boards; RDIMM or SODIMM modules will not fit or function. Buyers whose systems demand registered DIMMs or a different pin count should look elsewhere.

How it compares

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

Price $931.99
Pricier than about 60% of the 21,161 comparable items (median $397.99).
Total capacity 128 GB (4 × 32 GB)
Higher than about 70% of the 20,941 comparable items (median 32 GB).
Price per GB $7.28 per GB
Cheaper than about 56% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameNEMIX RAM
Product lineNEMIX RAM Original Series Memory
Model nameDDR4 ECC Unbuffered UDIMM Memory
Part numberME23400-328K4
Total capacity128 GB (4 × 32 GB)
Product type288-Pin DDR4 ECC UDIMM
Performance
Rated speedDDR4 2933 (PC4 23400)
Processor
ChipsetMajor OEM Samsung, Micron, Hynix
Memory
CAS latencyCL21
ECC supportYes
Buffer typeUnbuffered
Memory rank2Rx8
Heat spreaderNo
Power
Rated voltage1.2 V
Compatibility
Compatible systemsSupermicro
In the box
Included items128 GB 4 × 32 GB DDR4 2933 MHz PC4-23400 2Rx8 1.2 V 288-PIN ECC UDIMM KIT

Other versions of this model

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Questions about this item

How do I install the 288-pin DDR4 ECC UDIMM modules in the correct population order on my Supermicro X12SAE motherboard?

Power down, open the chassis, consult the motherboard manual for the approved DIMM sequence, then press each 288-pin UDIMM firmly into its slot until the retention clips click — skipping the manual's population order is the step most often missed and can prevent full 128GB recognition.

What maintenance or replacement will the 1.20V Samsung, Micron or Hynix DRAM chips need during their service life?

No routine maintenance is required for the DRAM chips; if a module fails it is replaced as a unit under the lifetime replacement warranty.

At what point does the CL21 latency limit sustained throughput on this 2933MHz kit?

CL21 sets the minimum row-access delay, so under continuous heavy workloads the CAS latency becomes the first timing bottleneck before bandwidth or voltage limits are reached.

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