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Two green 288-pin DDR5 RDIMM modules, no heat spreader

NEMIX RAM

NEMIX RAM 64GB (2×32GB) DDR5 4800 ECC RDIMM CL40 1.1V Dell PowerEdge XE9640 memory upgrade

SKU CH-8WP8-KZ4BQ

64GB DDR5 ECC registered server kit (2×32GB) at 4800MHz CL40, validated for Dell PowerEdge XE9640

  • Total capacity64 GB (2 × 32 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • 64 GB kit expands Dell PowerEdge XE9640 capacity
  • DDR5 4800 speed handles heavy server workloads
  • ECC registered design protects data integrity
  • 1 V operation reduces power draw
  • 288-pin RDIMM fits XE9640 memory slots

Dell PowerEdge XE9640 compatible DDR5 RDIMM kit

This 64 GB kit contains two 32 GB DDR5 4800 registered ECC modules built for the Dell PowerEdge XE9640 rack server. It targets IT teams that need validated, registered memory for mission-critical workloads on that specific platform.

Capacity and headroom: 64 GB across two slots

The dual-rank 2Rx8 organisation delivers 64 GB total capacity, leaving additional DIMM slots free for future expansion on the XE9640. Workloads that exceed 64 GB will require extra modules; the kit itself does not scale beyond the two included sticks.

Registered ECC at 1.1 V with CL40 latency

The modules run at DDR5 4800 (PC5-38400) with CL40 timings, 1.10 V operation and on-die ECC in a 288-pin RDIMM form factor. Systems that require unbuffered non-ECC DIMMs or a different voltage cannot use this kit.

How it compares

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

Price $1,874.99
Pricier than about 67% of the 21,161 comparable items (median $397.99).
Total capacity 64 GB (2 × 32 GB)
Higher than about 60% of the 20,941 comparable items (median 32 GB).
Price per GB $29.30 per GB
Pricier than about 83% 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 numberMR38400-328K2
Total capacity64 GB (2 × 32 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 rank2Rx8
Power
Rated voltage1.1 V
Compatibility
Compatible systemsDell
In the box
Included items64 GB (2 × 32 GB) DDR5 4800 MHz PC5-38400 1Rx4 1.1 V CL40 288-PIN ECC RDIMM Registered Server Memory KIT

Questions about this item

Will these DDR5 4800 RDIMMs work alongside existing DDR5 modules in the Dell PowerEdge XE9640?

Mixing memory modules is not recommended; the server requires identical DDR5 4800 ECC RDIMM specifications for stable operation across all populated slots.

How can I confirm the 64GB kit is running at the correct 4800 MT/s speed and CL40 latency after installation?

Enter the system BIOS or use the iDRAC interface to verify the memory operates at 4800 MT/s with CL40 timings and that all 64GB are detected without errors.

Does the package include only the two 32GB RDIMMs or are any tools or cables supplied?

The box contains only the two 32GB DDR5 4800 ECC RDIMM modules; no installation tools, cables or additional hardware are included.

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