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Eight green DDR5 RDIMM modules in anti-static tray

NEMIX RAM

NEMIX RAM 512GB (8x64GB) DDR5 4800 CL40 2Rx4 ECC RDIMM for Dell PowerEdge XE9640 memory upgrade

SKU CH-ZEDY-E1GJD

Eight 64 GB DDR5 4800 CL40 ECC registered DIMMs deliver 512 GB for Dell PowerEdge XE9640 servers

  • Total capacity512 GB (8 × 64 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • 512 GB total capacity across eight 64 GB modules
  • DDR5 4800 speed with PC5-38400 bandwidth for high-throughput workloads
  • ECC registered RDIMM design detects and corrects data errors
  • 2Rx4 dual-rank organisation maximises density per DIMM slot
  • 1 V operating voltage reduces power draw in dense server configs

Dell PowerEdge XE9640 memory upgrade

This 512GB kit contains eight 64GB DDR5 4800 registered ECC RDIMMs built for the Dell PowerEdge XE9640. It targets IT teams expanding capacity in mission-critical servers that require registered modules with error correction.

DDR5 4800 registered ECC limits

The modules run at 4800 MT/s with CL40 latency at 1.1V. Registered buffering and 2Rx4 organisation add command-cycle overhead that caps raw bandwidth, and the platform’s memory controller dictates the maximum supported population per channel.

Tool-less DIMM installation

Modules seat in the 288-pin slots without tools; align the key notch and press until the ejectors latch. Common issues include mixing ranks across channels, skipping the required BIOS update, or populating slots in the wrong sequence for the XE9640 memory topology.

How it compares

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

Price $13,803.99
Pricier than about 90% of the 21,161 comparable items (median $397.99).
Total capacity 512 GB (8 × 64 GB)
Higher than about 90% of the 20,941 comparable items (median 32 GB).
Price per GB $26.96 per GB
Pricier than about 75% 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 numberMR38400-924K8
Total capacity512 GB (8 × 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 items512 GB (8 × 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 choose the 512GB kit with eight 64GB modules or a different capacity for the Dell PowerEdge XE9640?

The kit provides 512GB total using eight 64GB RDIMMs, matching the Dell PowerEdge XE9640 memory slots for a balanced DDR5 4800 configuration.

What does the DDR5 4800 speed rating mean once the modules are installed in the server?

The modules run at 4800 MT/s with CL40 latency at 1.10V, delivering the rated PC5-38400 bandwidth when the Dell PowerEdge XE9640 memory controller operates at its native DDR5 4800 frequency.

How does the 288-pin DDR5 RDIMM interface and registered ECC design affect compatibility and limits?

The 288-pin DDR5 RDIMM form factor with registered 2Rx4 ECC chips fits Dell PowerEdge XE9640 slots and requires a platform that supports DDR5 registered ECC memory to function.

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