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Two green DDR5 UDIMM sticks without heat spreaders, 64GB kit

NEMIX RAM

NEMIX RAM 64GB (2x32GB) DDR5 5600 ECC UDIMM CL46 1.1V 288-Pin Lenovo ThinkSystem ST50 V3 memory upgrade

SKU CH-N76S-BEPDK

64 GB kit of two 32 GB DDR5 ECC UDIMMs at 5600 MT/s CL46 for Lenovo ThinkSystem ST50 V3

  • Total capacity64 GB (2 × 32 GB)
  • Rated speedDDR5 5600 (PC5 44800)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL46
  • Buffer typeUnbuffered
  • Rated voltage1.1 V
  • 64 GB capacity from two 32 GB modules expands server memory
  • DDR5 5600 speed with CL46 latency delivers high throughput
  • ECC unbuffered design protects data integrity in critical workloads
  • 1 V operation reduces power draw for efficient performance
  • 288-pin UDIMM form factor fits Lenovo ThinkSystem ST50 V3 tower server

Lenovo ThinkSystem ST50 V3 upgrade

This 64 GB kit uses two 32 GB DDR5 ECC unbuffered UDIMMs built for the Lenovo ThinkSystem ST50 V3 tower server. It targets administrators who need reliable capacity for virtualisation, databases or file services on that specific platform. Builders working with other motherboards or consumer desktops should look elsewhere.

Thermals and power draw

Operating at 1.1 V, the modules run at the standard DDR5 voltage without a heat spreader, relying on case airflow for cooling. The low voltage helps keep power draw modest during sustained workloads typical of server duty. Acoustic impact is negligible because the memory itself has no moving parts.

What the kit changes

Installing the matched pair enables dual-channel operation at 5600 MT/s with CL46 latency, adding 64 GB of error-correcting capacity in a single step. ECC protection detects and corrects single-bit errors, improving data integrity for critical workloads. The unbuffered design keeps latency low for the supported platform.

How it compares

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

Price $1,369.99
Pricier than about 63% of the 21,161 comparable items (median $397.99).
Total capacity 64 GB (2 × 32 GB)
Higher than about 60% of the 20,941 comparable items (median 32 GB).
Price per GB $21.41 per GB
Pricier than about 67% 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 numberME44800-328K2
Total capacity64 GB (2 × 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 items64 GB (2 × 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 my Lenovo ThinkSystem ST50 V3, and what step is often missed?

Power off the server, open the chassis, align each module's notch with the slot key, press firmly until the retention clips click, then verify in BIOS that both 32 GB sticks are detected at 5600 MHz.

What maintenance or replacement will this 64 GB DDR5 ECC kit need over its service life?

No routine maintenance is required; the modules have no heat spreader and run at 1.10 V. Replace only if a memory test reports uncorrectable errors or a module fails.

What limit appears first when this CL46 2Rx8 kit runs sustained workloads on the ST50 V3?

The CAS latency of 46 cycles at 5600 MHz sets the timing floor; under continuous load the memory controller will hit this latency bound before bandwidth or thermal limits become an issue.

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