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Four green DDR5 RDIMM sticks in a row

NEMIX RAM

NEMIX RAM 128GB (4x32GB) DDR5 5600 CL46 ECC RDIMM Lenovo ST650 V3 memory upgrade

SKU CH-97B1-FHPYD

A 128 GB DDR5 registered ECC kit of four 32 GB modules running at 5600 MT/s with CL46 latency, built for the Lenovo ThinkSystem ST650 V3 tower server

  • Total capacity128 GB (4 × 32 GB)
  • Rated speedDDR5 5600 (PC5 44800)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL46
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • 128 GB capacity across four 32 GB modules for high-density server workloads
  • DDR5 5600 speed rated at PC5-44800 for fast data throughput
  • ECC RDIMM registered design with CL46 latency protects data integrity
  • 1 V operating voltage reduces power draw in Lenovo ThinkSystem ST650 V3
  • 288-pin 2Rx4 layout ensures direct compatibility with the target tower server

Lenovo ST650 V3 memory kit

This 128GB kit contains four 32GB DDR5 5600 registered DIMMs built for the Lenovo ThinkSystem ST650 V3 tower server. ECC and registered signalling protect data integrity in multi-socket workloads. Modules run at 1.1V with CL46 latency and a 2Rx4 organisation. No heat spreaders are fitted.

Replaces slower or smaller DDR5 RDIMMs

Upgrading from lower-capacity or lower-speed registered modules adds bandwidth and rank density for virtualisation, databases and container hosts. The jump is worth it when the platform supports 5600 MT/s and the workload saturates existing memory channels. Systems limited to slower DDR5 speeds or fewer DIMM slots will not benefit.

128GB across four slots for dense configurations

Four 32GB ranks fill half the typical eight-slot population on this platform, leaving room for future expansion. The kit handles large VM counts, in-memory analytics and heavy file caches without swapping. Workloads that exceed 128GB or require higher frequencies will need additional modules or a faster memory tier.

How it compares

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

Price $3,973.99
Pricier than about 76% 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 $31.05 per GB
Pricier than about 89% 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 numberMR44800-324K4
Total capacity128 GB (4 × 32 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 rank2Rx4
Power
Rated voltage1.1 V
Compatibility
Compatible systemsLenovo
In the box
Included items128 GB (4 × 32 GB) DDR5 5600 MHz PC5-44800 2Rx4 1.1 V 288-PIN ECC RDIMM KIT

Questions about this item

Will the 288-pin DDR5 RDIMM modules fit the Lenovo ThinkSystem ST650 V3 memory slots?

Yes, the kit uses 288-pin DDR5 RDIMM form factor which matches the ST650 V3 DIMM slots.

What is the correct order to populate the four 32GB modules in the ST650 V3?

Install the modules in the channel sequence shown in the server manual, usually slot 1 of each channel first, then slot 2.

When should the registered ECC RDIMM kit be replaced?

Replace modules if the server logs correctable ECC errors that become uncorrectable or if memory diagnostics report persistent faults.

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