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Two green DDR5 RDIMM modules, bare circuit boards with gold edge connectors

NEMIX RAM

NEMIX RAM 256GB (2x128GB) DDR5 4800 CL40 4Rx4 1.10V ECC RDIMM Dell PowerEdge R960

SKU CH-2W7W-537KH

A 256GB DDR5 kit with two 128GB registered ECC RDIMMs running at 4800 CL40 and 1.10V for Dell PowerEdge R960 servers

  • Total capacity256 GB (2 × 128 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Rated voltage1.1 V
  • Buffer typeRegistered
  • 256 GB total capacity with two 128 GB modules
  • DDR5 4800 speed rated at PC5 38400
  • CL40 latency at 1.10 V operating voltage
  • ECC registered 4Rx4 design for data integrity
  • 288-pin RDIMM built for Dell PowerEdge R960

High-Capacity DDR5 Kit for Dell PowerEdge R960

This NEMIX RAM kit provides 256 GB of DDR5 4800 memory across two 128 GB modules. It is built for the Dell PowerEdge R960 rack server. ECC and registered operation protect data integrity in mission-critical workloads. The modules run at 1.10 V with a CL40 latency profile.

Replacing Slower or Smaller Registered DIMMs

The kit upgrades systems running lower-speed DDR5 or smaller-capacity registered modules. The jump is worth it when virtualisation density, in-memory databases or large-scale analytics demand more bandwidth and capacity per slot. Each 4Rx4 module maximises rank density within the 288-pin form factor.

Fits Dell PowerEdge R960 Memory Architecture

Installation uses the server's native 288-pin RDIMM slots without adapters. Registered signalling reduces electrical load on the memory controller, freeing headroom for full population. No heat spreaders are fitted, so airflow follows the chassis design. Compatibility is validated for the R960 platform.

How it compares

Measured against everything we stock in ECC Server RAM, at today’s prices. Recalculated every night.

Price $8,185.99
Pricier than about 91% of the 6,523 comparable items (median $188.99).
Total capacity 256 GB (2 × 128 GB)
Higher than about 90% of the 6,064 comparable items (median 32 GB).
Price per GB $31.98 per GB
Pricier than about 90% of the 6,064 comparable items (median $7.25 per GB).

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Specifications

Product
Brand nameNEMIX RAM
Product lineDell Series Server Memory
Model nameDell Compatible DDR5 ECC Registered RDIMM
Part numberMR38400-744K2
Total capacity256 GB (2 × 128 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
Memory rank4Rx4
Heat spreaderNo
Power
Rated voltage1.1 V

Questions about this item

Will the 288-pin DDR5 RDIMM modules fit the memory slots on a Dell PowerEdge R960?

Yes, the kit uses 288-pin DDR5 RDIMM form factor, which matches the slot type used by the PowerEdge R960.

What is the correct order for populating the two 128GB modules during installation?

Install the modules in the DIMM slots specified by the R960 service manual for a two-module configuration; the common error is placing them in adjacent slots instead of the recommended mirrored channels.

How do I know when the ECC registered memory needs replacement?

The system logs correctable ECC errors; when the corrected-error count rises steadily or uncorrectable errors appear, the 4Rx4 modules should be replaced.

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