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Four green DDR5 RDIMM sticks in anti-static tray

NEMIX RAM

NEMIX RAM 256GB (4X64GB) DDR5 4800 CL40 ECC RDIMM Dell PowerEdge XE9640 memory upgrade

SKU CH-Q6DF-JZHR6

256GB DDR5 ECC registered server memory kit with four 64GB modules at 4800MHz CL40 for Dell PowerEdge XE9640

  • Total capacity256 GB (4 × 64 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • 256 GB total capacity from four 64 GB modules
  • DDR5 4800 speed with PC5-38400 bandwidth rating
  • ECC registered design detects and corrects data errors
  • Low 1.10 V voltage reduces server power draw
  • Validated for Dell PowerEdge XE9640 rack systems

Dell PowerEdge XE9640 memory upgrade

This 256GB kit contains four 64GB DDR5 modules built for the Dell PowerEdge XE9640 rack server. It delivers registered ECC memory that maintains data integrity in enterprise workloads. The kit targets IT teams expanding capacity in compatible Dell platforms.

DDR5 4800 registered ECC limits

Registered DDR5 at 4800 MT/s with CL40 latency suits the memory controller of the validated server. The 2Rx4 organisation and 1.10V operation follow the platform specification. Systems requiring higher speeds or different ranks will not use this kit at its rated settings.

256GB capacity for dense workloads

Four 64GB RDIMMs fill four slots and provide 256GB of addressable memory for virtualisation, databases or analytics. Workloads needing more than 256GB per server must populate additional slots or use higher-density modules not included here.

How it compares

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

Price $7,102.99
Pricier than about 83% of the 21,161 comparable items (median $397.99).
Total capacity 256 GB (4 × 64 GB)
Higher than about 80% of the 20,941 comparable items (median 32 GB).
Price per GB $27.75 per GB
Pricier than about 78% 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 numberMR38400-924K4
Total capacity256 GB (4 × 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 items256 GB (4 × 64 GB) DDR5 4800 MHz PC5-38400 2Rx4 1.1 V CL40 288-PIN ECC RDIMM Registered Server Memory KIT

Questions about this item

Should I pick the 256 GB kit or a different capacity?

The kit supplies 256 GB in four 64 GB modules, giving the full capacity in a single matched set for the Dell PowerEdge XE9640.

What does DDR5 4800 mean for actual throughput in the server?

DDR5 4800 (PC5 38400) delivers up to 38 400 MB/s per module; with four modules the platform can scale aggregate bandwidth accordingly.

How does the 288-pin ECC RDIMM interface limit speed or capacity?

The 288-pin registered DIMM runs at 1.10 V with CL40 latency and 2Rx4 organisation, so the memory controller caps at the rated 4800 MT/s and supports the full 256 GB kit.

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