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Eight green DDR5 RDIMM modules in anti-static tray

NEMIX RAM

NEMIX RAM 1TB (8x128GB) DDR5 4800 CL40 4Rx4 ECC RDIMM Dell R660

SKU CH-2RHQ-JJCCP

Eight 128 GB DDR5 registered ECC modules running at 4800 MT/s CL40, 1.1 V, 4Rx4, validated for Dell PowerEdge R660 servers

  • Total capacity1 TB (8 × 128 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Rated voltage1.1 V
  • Buffer typeRegistered
  • 1TB capacity for large workloads with eight 128GB modules
  • DDR5 4800 speed rated at PC5-38400 for high throughput
  • CL40 latency at 1.10V for efficient operation
  • ECC registered 4Rx4 design protects data integrity
  • 288-pin RDIMM kit validated for Dell PowerEdge R660

Dell PowerEdge R660 compatible DDR5 kit

This 1 TB kit contains eight 128 GB DDR5 RDIMM modules built for the Dell PowerEdge R660 rack server. Each module runs at 4800 MT/s with CL40 latency at 1.10 V. Registered design and on-die ECC protect data integrity in mission-critical workloads.

Suited for administrators scaling memory on R660

The 4Rx4 organisation delivers high density per slot, ideal for virtualisation hosts and database tiers that need maximum capacity. Buyers who need lower latency timings, non-ECC modules, or memory for a different server platform should look elsewhere.

Eight matched modules simplify deployment

The kit arrives as a single validated set, eliminating the need to mix loose sticks and reducing the risk of compatibility errors. No heat spreaders are included, so airflow planning follows the server vendor’s standard guidelines.

Ready for immediate installation

Installation follows the standard RDIMM procedure documented in the system service manual. Lifetime replacement coverage from the manufacturer backs each module after deployment.

How it compares

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

Price $31,092.99
Pricier than about 94% of the 6,523 comparable items (median $188.99).
Total capacity 1 TB (8 × 128 GB)
Higher than about 92% of the 6,064 comparable items (median 32 GB).
Price per GB $31.09 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 numberMR38400-744K8
Total capacity1 TB (8 × 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

What motherboard slot and voltage does this 288-pin DDR5 1.10V RDIMM require to operate?

This kit uses 288-pin DDR5 RDIMM modules that run at 1.10V and must be installed in a server motherboard with matching DDR5 RDIMM slots.

Can I mix these 4Rx4 CL40 modules with existing 2Rx4 DDR5 RDIMMs in the same Dell PowerEdge R660?

The kit is validated for the Dell PowerEdge R660; mixing different rank configurations such as 4Rx4 with 2Rx4 is not guaranteed and may prevent the system from posting.

How do I confirm the full 1 TB is recognised at 4800 MT/s CL40 after installing the eight 128 GB modules?

Enter the system BIOS or UEFI and verify that all eight slots show 128 GB each, total capacity reads 1 TB, speed reports 4800 MT/s and CAS latency shows CL40.

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