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Eight green DDR5 RDIMM modules in anti-static bags

NEMIX RAM

NEMIX RAM 128GB (8x16GB) DDR5 4800 PC5-38400 CL40 1.1V ECC RDIMM Dell PowerEdge XE9640 memory upgrade

SKU CH-FNJD-BNXKN

128 GB DDR5 registered ECC kit with eight 16 GB modules at 4800 MT/s and CL40 for Dell PowerEdge XE9640

  • Total capacity128 GB (8 × 16 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • 128 GB total capacity in an 8 x 16 GB kit
  • DDR5 4800 speed rated at PC5-38400 bandwidth
  • ECC registered design protects data integrity in servers
  • Low 1.10 V operation reduces power draw per module
  • Built for Dell PowerEdge XE9640 compatibility

Dell PowerEdge XE9640 memory kit

This 128 GB kit uses eight 16 GB DDR5 modules built for the Dell PowerEdge XE9640 server. Registered ECC design adds error correction and signal buffering that enterprise workloads require.

Capacity and headroom

Eight slots filled with 16 GB RDIMMs deliver 128 GB total at DDR5 4800 PC5-38400 speed. CL40 latency and 1.10 V operation suit standard server profiles; the kit reaches its limit when the platform demands higher frequencies or lower latencies.

What the bundle changes

The matched 8 x 16 GB pack removes the guesswork of mixing ranks or vendors across all populated channels. Single-rank 1Rx8 organisation keeps electrical loading predictable for the memory controller.

How it compares

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

Price $3,419.99
Pricier than about 74% of the 21,161 comparable items (median $397.99).
Total capacity 128 GB (8 × 16 GB)
Higher than about 70% of the 20,941 comparable items (median 32 GB).
Price per GB $26.72 per GB
Pricier than about 74% of the 20,941 comparable items (median $8.19 per GB).

New to this? Buying memory and SSDs with crypto — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Brand nameNEMIX RAM
Product lineDell Server/Workstation Compatible Series Memory
Model nameDell DDR5 4800 MHz ECC RDIMM Registered Server Memory
Part numberMR38400-618K8
Total capacity128 GB (8 × 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 items128 GB (8 × 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 these 4800 MHz DDR5 RDIMMs run alongside existing DDR5 modules in my PowerEdge XE9640?

The kit uses DDR5 4800 PC5-38400 CL40 1.10V 1Rx8 registered DIMMs; match those exact speed, voltage, rank and ECC specifications for stable mixed operation.

How can I verify the 128 GB kit is detected and running at 4800 MHz after installation?

Check the system BIOS or iDRAC memory inventory — it should show eight 16 GB DDR5 4800 MT/s registered ECC modules totalling 128 GB with CL40 timings.

What comes in the box and is anything else required for the XE9640 upgrade?

The package contains the eight 16 GB DDR5 4800 CL40 1.10V 288-pin ECC RDIMMs; no extra parts are needed if all slots are free and the firmware is current.

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