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Green rectangular DDR5 RDIMM module with black chips and gold contacts

NEMIX RAM

NEMIX RAM 96GB DDR5 4800 CL40 2Rx4 ECC RDIMM Lenovo 4X77A81448 memory upgrade

SKU CH-RWSF-3NS4Q

A 96 GB DDR5 registered ECC module running at 4800 MT/s with CL40 latency for Lenovo ThinkSystem servers

  • Total capacity96 GB
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • 96 GB capacity scales memory-intensive server workloads
  • DDR5 4800 speed delivers high-throughput data transfer
  • ECC registered design protects data integrity under load
  • 1 V operation reduces power draw per module
  • 288-pin RDIMM form factor fits compatible Lenovo ThinkSystem slots

System-Specific DDR5 RDIMM for Lenovo Servers

This 96 GB DDR5 4800 module is built for Lenovo ThinkSystem servers that require registered ECC memory. The single 2Rx4 stick plugs into a 288-pin slot and runs at the standard 1.1 V server voltage. It targets administrators who need to expand capacity on AMD-based platforms using part number 4X77A81448.

Thermals Noise and Power Draw

Operating at 1.10 V, the module draws minimal power for its density and produces no audible noise because it has no moving parts. The bare PCB design relies on chassis airflow rather than a heat spreader, so thermal performance depends on the server’s internal cooling layout. Under typical registered-DIMM workloads the part stays within JEDEC thermal limits without extra fan speed.

Compatibility Validation and Warranty Coverage

Each stick is stress-tested under load before shipping to confirm stability in the qualified Lenovo systems. The lifetime replacement warranty covers defects for as long as the original purchaser owns the module. No extra software, heat spreaders or installation tools are bundled — only the memory itself.

How it compares

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

Price $2,623.99
Pricier than about 71% of the 21,161 comparable items (median $397.99).
Total capacity 96 GB
Higher than about 65% of the 20,941 comparable items (median 32 GB).
Price per GB $27.33 per GB
Pricier than about 76% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameNEMIX RAM
Product lineLenovo Server/Workstation Compatible Series Memory
Model nameLenovo DDR5 4800 MHz ECC RDIMM Registered Server Memory
Part numberMR38400-9624K1
Total capacity96 GB
Product type288-Pin DDR5 RDIMM
Performance
Rated speedDDR5 4800 (PC5 38400)
Processor
ChipsetMajor OEM Samsung, Micron, Hynix
Memory
CAS latencyCL40
ECC supportYes
Buffer typeRegistered
Heat spreaderNo
Memory rank2Rx4
Power
Rated voltage1.1 V
Compatibility
Compatible systemsLenovo
In the box
Included items96 GB (1 × 96 GB) DDR5 4800 MHz PC5-38400 2Rx4 1.1 V CL40 288-PIN ECC RDIMM Registered Server Memory

Questions about this item

How do I install the 288-pin DDR5 RDIMM in a Lenovo ThinkSystem server, and what step is often missed?

Power down the server, open the chassis, align the notch on the 288-pin module with the slot key, press firmly until the ejector clips lock, then verify in BIOS that the 96GB module runs at 4800 MT/s with ECC enabled. The step often missed is confirming the registered ECC mode is active after boot.

What maintenance or replacement will this 96GB 2Rx4 ECC RDIMM need over its service life?

No scheduled maintenance is required for the DDR5 module itself. If a correctable error count rises above the platform threshold, the DIMM should be replaced. NEMIX RAM provides a lifetime replacement warranty, so a faulty unit can be swapped without additional cost.

What limit appears first when this CL40 1.1V DDR5 RDIMM runs sustained workloads on an AMD-based Lenovo server?

The primary limit is the CAS latency of CL40 at 4800 MT/s, which sets the minimum access delay. Under heavy sustained load, the memory controller's thermal throttling point is typically reached before the module's 1.10V operating voltage becomes a constraint.

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