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Four green DDR5 RDIMM modules with black chips and gold contacts, no heat spreaders

NEMIX RAM

NEMIX RAM 256GB (4x64GB) DDR5 5600MHz CL46 4Rx4 1.1V ECC RDIMM Kit for Lenovo ThinkSystem ST650 V3

SKU CH-E8YZ-B46ZQ

256 GB DDR5 ECC RDIMM kit with four 64 GB modules at 5600 MHz CL46 for Lenovo ThinkSystem ST650 V3

  • Total capacity256 GB (4 × 64 GB)
  • Rated speedDDR5 5600 (PC5 44800)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL46
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • 256 GB total capacity for large server workloads
  • Four 64 GB DDR5 modules at 5600 MHz
  • ECC registered design protects data integrity
  • 1 V operation reduces power draw
  • Validated for Lenovo ThinkSystem ST650 V3

Lenovo ThinkSystem ST650 V3 Kit

This 256GB kit contains four 64GB DDR5 RDIMMs built for the Lenovo ThinkSystem ST650 V3 tower server. Each module is registered and carries ECC for data integrity in enterprise workloads. The kit arrives new and ready for installation in compatible systems.

DDR5 5600 Registered Limits

The DDR5 5600 standard with registered buffering sets the electrical and timing envelope for this memory. CL46 latency and 1.1V operation are fixed by the JEDEC specification for this speed grade. Registered modules add one clock cycle of command delay compared to unbuffered DIMMs.

256GB Capacity and Headroom

Four ranks per module (4Rx4) across four DIMMs deliver 256GB of addressable memory for virtualization, databases or large datasets. The 288-pin RDIMM form factor fits the server's memory slots exactly. Workloads exceeding 256GB or requiring higher frequencies will need a different configuration.

How it compares

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

Price $8,006.99
Pricier than about 84% of the 21,161 comparable items (median $397.99).
Total capacity 256 GB (4 × 64 GB)
Higher than about 80% of the 20,941 comparable items (median 32 GB).
Price per GB $31.28 per GB
Pricier than about 90% 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 Server Memory
Model nameDDR5 ECC RDIMM Registered Server Memory
Part numberMR44800-944K4
Total capacity256 GB (4 × 64 GB)
Product type288-Pin DDR5 RDIMM
Performance
Rated speedDDR5 5600 (PC5 44800)
Processor
ChipsetMajor OEM Samsung, Micron, Hynix
Memory
CAS latencyCL46
ECC supportYes
Buffer typeRegistered
Heat spreaderNo
Memory rank4Rx4
Power
Rated voltage1.1 V
Compatibility
Compatible systemsLenovo
In the box
Included items256 GB (4 × 64 GB) DDR5 5600 MHz PC5-44800 4Rx4 1.1 V 288-PIN ECC RDIMM KIT

Questions about this item

Should I pick the 256GB kit with four 64GB modules or a different capacity for my ThinkSystem ST650 V3?

This kit provides 256GB total across four 64GB DDR5 5600 CL46 ECC RDIMM modules, matching the server's supported configuration.

What does the DDR5 5600 rating mean for actual throughput in the ST650 V3?

The modules operate at DDR5 5600 with CL46 latency and 1.1V voltage, delivering the rated speed when installed in compatible slots.

How does the 288-pin RDIMM interface and PC5-44800 standard limit performance in this server?

The 288-pin DDR5 RDIMM form factor and PC5-44800 designation define the electrical and mechanical interface for the ST650 V3 memory slots.

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