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Two green DDR5 RDIMM modules with gold contacts and black chips

NEMIX RAM

NEMIX RAM 32GB (2x16GB) DDR5 4800 ECC RDIMM memory upgrade for Dell PowerEdge XE9640

SKU CH-XM0H-A3Z84

32 GB DDR5 ECC registered memory kit, two 16 GB modules at 4800 MHz CL40 1.1 V, validated for Dell PowerEdge XE9640

  • Total capacity32 GB (2 × 16 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • 32 GB kit (2 x 16 GB) expands server capacity
  • DDR5 4800 speed with CL40 latency boosts throughput
  • ECC registered design protects data integrity under load
  • 1 V operation reduces power draw per module
  • 288-pin RDIMM form factor fits Dell PowerEdge XE9640

Dell PowerEdge XE9640 memory kit

This 32GB kit contains two 16GB DDR5 RDIMM modules built for the Dell PowerEdge XE9640 server. ECC and registered operation protect data integrity in mission-critical workloads. The kit targets IT teams upgrading memory in validated Dell enterprise platforms.

32GB capacity with DDR5 4800 speed

Two 1Rx8 modules run at 4800 MT/s (PC5-38400) with CL40 latency at 1.10V. Registered buffering and on-die ECC handle heavy virtualization, database and HPC tasks. Capacity stops at 32GB, so larger datasets need additional populated slots or higher-density modules.

Upgrade from lower-capacity DDR5 RDIMMs

Replacing smaller registered kits adds headroom for multi-tenant VMs and in-memory analytics without changing voltage or slot layout. The jump is worthwhile when current memory pressure triggers swapping or limits container density on the XE9640.

How it compares

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

Price $804.99
Pricier than about 58% of the 21,161 comparable items (median $397.99).
Total capacity 32 GB (2 × 16 GB)
Typical for this category: the median of 20,941 items is 32 GB.
Price per GB $25.16 per GB
Pricier than about 70% 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 numberMR38400-618K2
Total capacity32 GB (2 × 16 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 rank1Rx8
Power
Rated voltage1.1 V
Compatibility
Compatible systemsDell
In the box
Included items32 GB (2 × 16 GB) DDR5 4800 MHz PC5-38400 1Rx8 1.1 V CL40 288-PIN ECC RDIMM Registered Server Memory KIT

Questions about this item

Will the 4800 DDR5 RDIMMs fit in the Dell PowerEdge XE9640 slots that currently hold DDR5 modules?

Yes, they are 288-pin DDR5 RDIMMs built for the XE9640, so they seat in the same DDR5 slots.

How can I verify the kit runs at CL40 1.10 V after installation?

Check the BIOS memory information or a tool like CPU-Z; it should report DDR5-4800, CL40 and 1.10 V.

What comes in the box and is anything else required?

The package contains the 32 GB (2 x 16 GB) RDIMM kit; no extra parts are needed for installation.

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