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Two green DDR5 RDIMM sticks without heat spreaders, 256GB kit

NEMIX RAM

NEMIX RAM 256GB (2x128GB) DDR5 4800 CL40 ECC RDIMM memory upgrade for Dell PowerEdge XE9680

SKU CH-RBTK-NTFRQ

256GB kit of two 128GB DDR5 4800 CL40 ECC registered DIMMs for Dell PowerEdge XE9680

  • Total capacity256 GB (2 × 128 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • 256 GB capacity for large-scale workloads
  • 4800 MT/s DDR5 speed for high-throughput computing
  • ECC registered design protects data integrity
  • 1 V operation reduces power draw
  • 2 x 128 GB kit simplifies dual-channel population

256GB DDR5 4800 ECC RDIMM Kit

This NEMIX RAM kit provides 256GB of DDR5 4800 registered ECC memory in a two-module configuration. Each 128GB module uses a 4Rx4 organisation and operates at 1.1V with CL40 latency. The 288-pin RDIMM form factor is built for the Dell PowerEdge XE9680 rack server.

Suited for XE9680 capacity expansion

Administrators scaling memory in a Dell PowerEdge XE9680 will find this kit matches the platform's registered ECC requirements. It is not intended for consumer desktops, workstations lacking RDIMM support, or systems that require unbuffered or non-ECC modules.

Handles large multi-tenant workloads

The 256GB total capacity supports dense virtualisation, in-memory databases and high-thread-count compute tasks on the XE9680. Workloads that exceed this per-channel limit or demand higher frequencies than 4800MT/s will require additional DIMM slots or faster-rated modules.

How it compares

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

Price $7,121.99
Pricier than about 83% of the 21,161 comparable items (median $397.99).
Total capacity 256 GB (2 × 128 GB)
Higher than about 80% of the 20,941 comparable items (median 32 GB).
Price per GB $27.82 per GB
Pricier than about 78% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameNEMIX RAM
Product lineDell Server/Workstation Compatible Series Memory
Model nameDell DDR5 4800 MHz ECC RDIMM Registered Server Memory
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
Heat spreaderNo
Memory rank4Rx4
Power
Rated voltage1.1 V
Compatibility
Compatible systemsDell
In the box
Included items256 GB (2 × 128 GB) DDR5 4800 MHz PC5-38400 4Rx4 1.1 V CL40 288-PIN ECC RDIMM Registered Server Memory KIT

Questions about this item

Does the Dell PowerEdge XE9680 need any special BIOS setting to recognise the 4Rx4 registered ECC modules?

The kit is built to Dell specifications for the XE9680, so the server’s firmware will detect the 4Rx4 registered ECC DIMMs at 4800 MT/s without extra configuration.

Can I keep my existing DDR5 4800 RDIMMs and add this 256 GB kit in the remaining slots?

Yes, provided the other modules are also DDR5 4800 registered ECC RDIMMs; mixing ranks is supported but the system will run all channels at the lowest common speed.

How can I confirm the 256 GB kit is running at 4800 MT/s with ECC active after installation?

Check the system BIOS or iDRAC memory inventory — it will show each 128 GB DIMM at 4800 MT/s, 1.1 V, CL40 with ECC enabled.

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