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Sixteen green DDR5 RDIMM sticks in a row

NEMIX RAM

NEMIX RAM 1TB (16x64GB) DDR5 4800 CL40 2Rx4 ECC RDIMM Dell XE9640 memory upgrade

SKU CH-0S0A-ZXS3V

A 1 TB DDR5 registered ECC memory kit of sixteen 64 GB modules running at 4800 MT/s CL40 and 1.1 V, built for the Dell PowerEdge XE9640

  • Total capacity1 TB (16 × 64 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • 1 TB capacity from 16 modules of 64 GB each
  • DDR5 4800 speed rated at PC5-38400 bandwidth
  • ECC registered RDIMM for server-grade data integrity
  • CL40 latency at 1.10 V operating voltage
  • Validated for Dell PowerEdge XE9640 systems

Dell XE9640 1 TB DDR5 RDIMM kit

This NEMIX RAM kit supplies 1 TB of DDR5 memory in sixteen 64 GB registered ECC modules built for the Dell PowerEdge XE9640. Each module runs at 4800 MT/s with CL40 latency at 1.1 V using 288-pin RDIMM form factor. The 2Rx4 organisation and major-brand Samsung, Micron or Hynix chips target enterprise server workloads that demand error correction and registered buffering.

Suited for XE9640 capacity expansion

IT teams scaling a Dell PowerEdge XE9640 to its maximum supported memory will use this sixteen-module kit to fill every slot with 64 GB RDIMMs. Systems that require unbuffered UDIMMs, non-ECC memory, lower voltages, different pin counts or speeds other than DDR5 4800 cannot use these modules. Buyers needing smaller increments or consumer desktop compatibility should look elsewhere.

Sixteen-module 1 TB kit at DDR5 4800

The decisive specification is the sixteen-module 1 TB configuration delivering 64 GB per registered ECC RDIMM at DDR5 4800 CL40 1.1 V. This exact kit matches the XE9640 slot count and density requirement; any deviation in module count, capacity per module, rank structure or voltage makes the kit incompatible with the target server.

How it compares

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

Price $28,992.99
Pricier than about 93% of the 21,161 comparable items (median $397.99).
Total capacity 1 TB (16 × 64 GB)
Higher than about 93% of the 20,941 comparable items (median 32 GB).
Price per GB $28.99 per GB
Pricier than about 82% 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 numberMR38400-924K16
Total capacity1 TB (16 × 64 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 systemsDell
In the box
Included items1 TB (16 × 64 GB) DDR5 4800 MHz PC5-38400 2Rx4 1.1 V CL40 288-PIN ECC RDIMM Registered Server Memory

Questions about this item

Will these 288-pin DDR5 RDIMMs physically fit the memory slots in a Dell PowerEdge XE9640?

Yes, the kit uses the standard 288-pin DDR5 RDIMM form factor that matches the XE9640 memory sockets.

What is the correct sequence for populating the 16 modules during installation, and which step is most often missed?

Follow the Dell XE9640 service manual channel population order exactly; the step most often missed is seating each module until both retention clips click.

If a module fails years later, what replacement does the kit require?

Replace the failed stick with another 64 GB DDR5 4800 CL40 2Rx4 1.10 V ECC RDIMM to keep the 1 TB kit matched.

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