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Four green DDR5 UDIMM sticks, black chips, no heat spreaders

NEMIX RAM

NEMIX RAM 128GB (4x32GB) DDR5 5600 ECC UDIMM CL46 1.1V SuperMicro BH4SR2-25G

SKU CH-N5ES-6JAYJ

A 128 GB DDR5 ECC UDIMM kit of four 32 GB modules running at 5600 MT/s with CL46 latency at 1.1 V, built for SuperMicro BH4SR2-25G and BH4SRG motherboards

  • 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 capacity across four 32 GB modules enables large workloads
  • DDR5 5600 speed delivers high bandwidth for demanding applications
  • ECC protection detects and corrects memory errors automatically
  • 1 V operation reduces power draw and heat output
  • Validated for SuperMicro BH4SR2-25G and BH4SRG motherboards

Capacity and fit

This 128GB kit contains four 32GB DDR5 ECC UDIMM modules built for Supermicro BH4SR2-25G and BH4SRG motherboards. Each stick runs at 5600MHz with CL46 latency at 1.1V. The unbuffered design suits workstations and entry servers that need error correction without registered signalling.

Sustained-load behaviour

ECC circuitry corrects single-bit errors on the fly, keeping data integrity intact during long compute runs or file-system scrubs. Dual-rank 2Rx8 organisation lets the memory controller interleave accesses across ranks, helping maintain throughput when all four slots are populated. The 1.1V operating voltage limits thermal output under continuous load.

Build and daily use

Modules ship without heat spreaders, so they fit tight DIMM spacing in 1U and 2U chassis where taller kits would block airflow. Standard 288-pin DDR5 keying prevents mis-insertion, and the four-stick package fills a typical four-channel board in one purchase. Buyers who need registered RDIMMs or higher capacities per module should look elsewhere.

How it compares

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

Price $2,446.99
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 $19.12 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 systemsSupermicro
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

Will the 1.10V DDR5 5600 kit run cool and quiet when the server operates continuously?

The modules operate at 1.10V with no heat spreader, relying on chassis airflow; DDR5 5600 at this voltage typically produces modest heat and no audible noise during all-day loads.

What motherboard feature must I already have for this 288-pin ECC UDIMM kit to function?

Your board must provide DDR5 UDIMM slots with on-die ECC support; the kit is validated for SuperMicro BH4SR2-25G and BH4SRG motherboards.

Can I mix these 2Rx8 CL46 DDR5 5600 sticks with slower DDR5 DIMMs I may keep?

Mixing ranks, speeds or latencies is not recommended; the system will downclock all modules to the slowest timing, potentially causing instability with ECC UDIMMs.

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