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Four green 288-pin DDR5 RDIMM modules without heat spreaders

NEMIX RAM

NEMIX RAM 512GB (4 x 128GB) DDR5 4800MHz PC5-38400 4Rx4 1.1V 288-Pin ECC RDIMM Kit Dell PowerEdge R760xa

SKU CH-C9M6-C2K2A

A 512 GB registered DDR5 kit of four 128 GB ECC RDIMMs running at 4800 MHz with CL40 latency and 1.1 V for Dell PowerEdge R760xa servers

  • Total capacity512 GB (4 × 128 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Rated voltage1.1 V
  • Buffer typeRegistered
  • 512GB total capacity powers memory-intensive server workloads
  • Four 128GB modules populate quad-channel architecture efficiently
  • DDR5 4800 speed delivers high-throughput data transfer
  • ECC registered design corrects errors for mission-critical reliability
  • 1V operation reduces power draw per module

512GB DDR5 ECC RDIMM Kit

This 512GB kit comprises four 128GB DDR5 4800MHz registered DIMMs built for Dell PowerEdge R760xa servers. It targets IT teams upgrading memory capacity in compatible rack-mounted platforms. ECC and registered buffering protect data integrity in mission-critical workloads.

Capacity and headroom

The 512GB total (4 x 128GB) provides substantial headroom for virtualisation, large databases and in-memory analytics. Four 4Rx4 ranks per module maximise density within the 288-pin form factor. Workloads exceeding 512GB will require additional DIMM slots or higher-capacity modules not included in this kit.

DDR5 4800 interface limits

The PC5-38400 standard delivers 4800MT/s at 1.1V with CL40 latency. Bandwidth and latency are fixed by the DDR5 4800 specification; faster speeds or lower latencies need memory controllers and modules rated beyond PC5-38400. Systems locked to 4800MT/s cannot utilise higher-speed DDR5 grades.

How it compares

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

Price $15,592.99
Pricier than about 92% of the 6,523 comparable items (median $188.99).
Total capacity 512 GB (4 × 128 GB)
Higher than about 91% of the 6,064 comparable items (median 32 GB).
Price per GB $30.46 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 numberMR38400-744K4
Total capacity512 GB (4 × 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 4Rx4 DDR5 4800 registered modules work with other RDIMMs already installed in a PowerEdge R760xa?

The kit provides four 128 GB DDR5 4800 CL40 1.1 V 4Rx4 registered DIMMs; Dell's memory population rules for the R760xa require identical rank and speed per channel, so mixing different ranks or speeds is not supported.

How can I confirm the 512 GB kit is running at DDR5 4800 with ECC active after installation?

Enter the system BIOS or iDRAC and verify the memory speed shows 4800 MT/s, total capacity reads 512 GB, and ECC status reports enabled for each of the four modules.

Does the MR38400-744K4 box contain only the four 288-pin RDIMMs or are cables or brackets included?

The package includes four 128 GB DDR5 288-pin ECC registered RDIMMs; no cables, brackets or additional hardware are supplied.

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