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Four green DDR5 UDIMM sticks without heat spreaders, 128GB kit

NEMIX RAM

NEMIX RAM 128GB 4x32GB DDR5 5600 CL46 2Rx8 1.1V ECC UDIMM Lenovo ThinkSystem ST50 V3

SKU CH-2CDS-1GEWR

128 GB DDR5 ECC UDIMM kit in four 32 GB modules at 5600 MT/s CL46 for Lenovo ThinkSystem ST50 V3

  • Total capacity128 GB (4 × 32 GB)
  • Rated speedDDR5 5600 (PC5 44800)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL46
  • Buffer typeUnbuffered
  • Rated voltage1.1 V
  • 128 GB kit expands server memory capacity with four 32 GB modules
  • DDR5 5600 speed delivers high data throughput for demanding workloads
  • ECC protection detects and corrects single-bit errors to maintain data integrity
  • Low 1.10 V operation reduces power draw and heat in the ThinkSystem ST50 V3
  • 2Rx8 dual-rank organisation increases memory density per DIMM slot

System-Specific DDR5 Kit for Lenovo ThinkSystem

This 128GB kit contains four 32GB DDR5 5600 ECC UDIMM modules validated for the Lenovo ThinkSystem ST50 V3 tower server. Each stick is a 2Rx8 288-pin unbuffered DIMM rated at CL46 and 1.1V. The kit targets administrators who need the full 128GB capacity in a single qualified package.

Thermals Noise and Power Draw

The modules run at the standard DDR5 voltage of 1.10V and carry no heat spreader, relying on the server’s directed airflow for cooling. Unbuffered ECC operation at 5600 MT/s keeps power draw predictable within the platform’s memory subsystem budget. Acoustic impact is limited to the existing chassis fans; the memory itself adds no moving parts.

What the Kit Changes

Installing the four matched modules populates all available slots, enabling the maximum supported capacity with error-correcting code active. The CL46 timing and 2Rx8 organisation are factory-set, so no manual tuning is required. Buyers who need a different capacity or registered DIMMs will need a separate part number.

How it compares

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

Price $2,495.99
Pricier than about 71% 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 $19.50 per GB
Pricier than about 65% 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 nameDDR5 ECC Unbuffered UDIMM Memory
Part numberME44800-328K4
Total capacity128 GB (4 × 32 GB)
Product type288-Pin DDR5 ECC UDIMM
Performance
Rated speedDDR5 5600 (PC5 44800)
Processor
ChipsetMajor OEM Samsung, Micron, Hynix
Memory
CAS latencyCL46
ECC supportYes
Buffer typeUnbuffered
Heat spreaderNo
Memory rank2Rx8
Power
Rated voltage1.1 V
Compatibility
Compatible systemsLenovo
In the box
Included items128 GB (4 × 32 GB) DDR5 5600 MHz PC5-44800 2Rx8 1.1 V 288-PIN ECC UDIMM KIT

Questions about this item

How do I install the 288-PIN DDR5 ECC UDIMM modules in the Lenovo ThinkSystem ST50 V3 and which step is often missed?

Power off the server, open the chassis, align each module notch with the slot key, press firmly until the retention clips click, then verify in BIOS that all 128GB are detected at 5600MHz; the step often missed is seating all four modules fully so the clips engage on both sides.

What maintenance or replacement will the 1.1V 2Rx8 ECC UDIMM kit need over its service life?

No routine maintenance is required; keep the server air filters clean to maintain airflow over the modules, and replace a module only if the system logs report an uncorrectable ECC error on a specific 32GB stick.

What limit appears first when the 4x32GB DDR5 5600 CL46 kit runs sustained workloads in the ST50 V3?

The memory controller tops out at the rated 5600MHz data rate, so sustained throughput is capped at the PC5-44800 bandwidth ceiling; thermal throttling is unlikely at the standard 1.10V operating voltage.

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