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Four green DDR5 UDIMM sticks in a row

NEMIX RAM

NEMIX RAM 64GB (4x16GB) DDR5 5600 CL46 ECC UDIMM Lenovo ST250 V3

SKU CH-YJHS-8AE8G

64 GB DDR5 ECC UDIMM kit (4 × 16 GB) at 5600 MT/s CL46 for Lenovo ThinkSystem ST250 V3

  • Total capacity64 GB (4 × 16 GB)
  • Rated speedDDR5 5600 (PC5 44800)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL46
  • Buffer typeUnbuffered
  • Rated voltage1.1 V
  • 64 GB total capacity across four 16 GB modules
  • DDR5 5600 speed with CL46 latency for responsive server workloads
  • ECC protection detects and corrects single-bit errors
  • 1 V operation reduces power draw in the ST250 V3
  • 288-pin UDIMM form factor fits the tower server memory slots

Lenovo ThinkSystem ST250 V3 compatible kit

This 64 GB kit contains four 16 GB DDR5 ECC unbuffered UDIMMs validated for the Lenovo ThinkSystem ST250 V3 tower server. The modules run at 5600 MT/s with a CAS latency of 46 at 1.1 V. The 288-pin layout matches the server's memory slots directly.

Suits admins upgrading ST250 V3 memory

Buyers who need error-correcting memory for this specific Lenovo platform can install the kit without additional configuration. The unbuffered design fits the ST250 V3's memory architecture. Systems that require registered or load-reduced DIMMs cannot use these modules. Builds that demand a heat spreader on every stick should look elsewhere.

1Rx8 rank organisation

Each module uses a single-rank 1Rx8 organisation, which the ST250 V3 memory controller expects for optimal population. Mixing ranks or using dual-rank DIMMs may reduce the number of usable slots or limit the maximum capacity the server can address.

How it compares

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

Price $1,543.99
Pricier than about 65% of the 21,161 comparable items (median $397.99).
Total capacity 64 GB (4 × 16 GB)
Higher than about 60% of the 20,941 comparable items (median 32 GB).
Price per GB $24.12 per GB
Pricier than about 69% 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 numberME44800-618K4
Total capacity64 GB (4 × 16 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 rank1Rx8
Power
Rated voltage1.1 V
Compatibility
Compatible systemsLenovo
In the box
Included items64 GB (4 × 16 GB) DDR5 5600 MHz PC5-44800 1Rx8 1.1 V 288-PIN ECC UDIMM KIT

Questions about this item

Does my Lenovo ThinkSystem ST250 V3 server need any specific BIOS setting to recognise the 5600MHz DDR5 ECC UDIMM kit?

The server will auto-negotiate the 5600MHz speed and CL46 timings at 1.10V on first boot; no manual configuration is required beyond seating all four 288-pin modules in the approved slots.

Will the four 16GB 1Rx8 DDR5 ECC UDIMMs work if I leave older DDR5 modules in the remaining slots?

Mixing ranks or speeds forces the memory controller to run at the lowest common denominator; for stable ECC operation Lenovo recommends populating every channel with identical 1Rx8 5600MHz modules, so remove any dissimilar sticks.

How can I confirm the full 64GB kit is running at 5600MHz with ECC active after installation?

Enter the UEFI setup or run a tool such as dmidecode; you should see four 16GB 1Rx8 DDR5 modules at 5600MT/s, PC5-44800, CL46, 1.10V and ECC enabled.

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