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Four green circuit boards with black memory chips, no heat spreaders, 288 gold pins along the bottom edge

NEMIX RAM

NEMIX RAM ME21300-328K4 128GB (4x32GB) DDR4 2666 ECC UDIMM memory upgrade

SKU CH-31JB-JEA74

128GB kit of four 32GB DDR4 ECC unbuffered UDIMMs at 2666MHz CL19 for ASUS WS C246M PRO workstation motherboards

  • Capacity128GB (4 x 32GB)
  • Type288-Pin DDR4 ECC UDIMM
  • SpeedDDR4 2666 (PC4 21300)
  • CAS LatencyCL19
  • Voltage1.20V
  • ECCYes

Size 128GB 4X32GB

  • 128 GB total capacity from four 32 GB modules
  • ECC protection detects and corrects single-bit errors
  • DDR4 2666 speed with CL19 timing at 1.20 V
  • 288-pin unbuffered UDIMM fits ASUS WS C246M PRO boards
  • 2Rx8 dual-rank organisation matches controller expectations

Exact-match 128 GB DDR4 ECC kit

This NEMIX RAM kit delivers 128 GB as four 32 GB DDR4-2666 ECC unbuffered UDIMMs. It is built for workstations that require the precise 2Rx8 rank, 1.2 V voltage and CL19 timing the memory controller expects. The modules install in the standard 288-pin DIMM slots of compatible ASUS WS C246M PRO series boards.

Verified fitment for ASUS WS C246M PRO

The kit is validated for the ASUS WS C246M PRO and WS C246M PRO/SE workstation motherboards. Using the correct unbuffered ECC UDIMM form factor avoids the incompatibility that registered or SODIMM modules would cause. Matching the board's population rules lets the system recognise the full 128 GB capacity at the rated 2666 MT/s speed.

ECC protection for data integrity

On-die error-correcting code detects and corrects single-bit errors in real time, preventing silent data corruption and unplanned reboots. This hardware-level reliability is essential for workloads where calculation accuracy and uptime cannot be compromised. Buyers needing non-ECC memory or a different DDR generation should look elsewhere.

Highlights

  • 128 GB total capacity from four 32 GB modules
  • ECC protection detects and corrects single-bit errors
  • DDR4 2666 speed with CL19 timing at 1.20 V
  • 288-pin unbuffered UDIMM fits ASUS WS C246M PRO boards
  • 2Rx8 dual-rank organisation matches controller expectations

Specifications

BrandNEMIX RAM
SeriesNEMIX RAM Original Series Memory
ModelDDR4 ECC Unbuffered UDIMM Memory
Part NumberME21300-328K4
Capacity128GB (4 x 32GB)
Type288-Pin DDR4 ECC UDIMM
SpeedDDR4 2666 (PC4 21300)
CAS LatencyCL19
Voltage1.20V
ECCYes
Buffered/RegisteredUnbuffered
Rank2Rx8
ChipsetMajor OEM Samsung, Micron, Hynix
Heat SpreaderNo
Compatible SystemASUS
FeaturesDDR4 ECC Unbuffered UDIMM Motherboard Compatible
Package Content128GB 4X32GB DDR4 2666MHz PC4-21300 2Rx8 1.2V 288-PIN ECC UDIMM KIT

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Questions about this item

Will the 288-pin DDR4 UDIMM modules need replacement if I later populate all four slots on the ASUS WS C246M PRO?

The kit already fills all four slots with 32 GB modules, so no further modules can be added; replacement would only be needed if a stick fails.

What limit appears first when the 2Rx8 ECC UDIMMs run at 2666 MHz continuously?

The CAS latency of CL19 and the fixed 1.20 V voltage set the timing and power ceiling that the memory controller enforces under sustained load.

How much heat and noise do the bare 1.2 V DDR4 sticks produce during all-day operation?

Without a heat spreader the modules run at standard 1.20 V DDR4 power, generating minimal heat and no audible noise since they have no moving parts.

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