We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Eight bare green DDR5 RDIMM modules in anti-static tray

NEMIX RAM

NEMIX RAM 256GB (8x32GB) DDR5 4800 CL40 ECC RDIMM Dell XE9640 memory upgrade

SKU CH-388G-HR909

Eight 32 GB DDR5 4800 CL40 ECC registered DIMMs totalling 256 GB for Dell PowerEdge XE9640 servers

  • Capacity256GB (8 x 32GB)
  • SpeedDDR5 4800 (PC5 38400)
  • ECCYes
  • Buffered/RegisteredRegistered
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • Voltage1.10V
  • 256GB total capacity across eight 32GB modules
  • DDR5 4800 speed with PC5-38400 bandwidth rating
  • ECC registered RDIMM ensures data integrity under load
  • 1V operating voltage for efficient server deployment
  • Validated compatible with Dell PowerEdge XE9640

Dell XE9640 256GB DDR5 kit

This 256GB kit contains eight 32GB DDR5 4800 registered DIMMs with ECC and CL40 latency. It is built for the Dell PowerEdge XE9640 and runs at 1.10V. The modules use major OEM DRAM from Samsung, Micron or Hynix and are stress tested under load.

IT teams scaling XE9640 servers

The 8x32GB layout fills the XE9640 memory channels for maximum capacity. Buyers who need unbuffered UDIMMs or lower-density modules for other platforms should look elsewhere because this kit is registered ECC RDIMM only.

Standard 288-pin RDIMM installation

Insert each module into the server DIMM slots following the Dell service manual population rules. The most common issue is mixing registered and unbuffered DIMMs or skipping the required BIOS update, which prevents the system from recognising the full 256GB.

Highlights

  • 256GB total capacity across eight 32GB modules
  • DDR5 4800 speed with PC5-38400 bandwidth rating
  • ECC registered RDIMM ensures data integrity under load
  • 1V operating voltage for efficient server deployment
  • Validated compatible with Dell PowerEdge XE9640

Specifications

BrandNEMIX RAM
SeriesDell Server/Workstation Compatible Series Memory
ModelDell DDR5 4800MHZ ECC RDIMM Registered Server Memory
Part NumberMR38400-328K8
Capacity256GB (8 x 32GB)
SpeedDDR5 4800 (PC5 38400)
ECCYes
Buffered/RegisteredRegistered
ChipsetMajor OEM Samsung, Micron, Hynix
Voltage1.10V
Compatible SystemDell
CAS LatencyCL40
Heat SpreaderNo
Type288-Pin DDR5 RDIMM
Rank2Rx8
FeaturesDDR5 ECC Registered RDIMM Server Motherboard Compatible
Package Content256GB (8X32GB) DDR5 4800MHZ PC5-38400 2Rx8 1.1V CL40 288-PIN ECC RDIMM Registered Server Memory KIT

Questions about this item

Does the Dell PowerEdge XE9640 require all eight DIMM slots to be populated for this 256GB kit to operate?

The kit provides eight 32GB modules totalling 256GB; the XE9640 memory architecture determines whether partial population is supported, so consult the server manual for the approved slot layout.

Will these registered ECC RDIMMs work in a standard desktop motherboard that accepts unbuffered DDR5?

No, the modules are 288-pin DDR5 registered ECC RDIMMs built for server platforms and are not compatible with consumer desktop boards that require unbuffered memory.

How can I verify the memory is running at DDR5 4800 with CL40 latency after installation?

Enter the system BIOS or use a hardware utility such as CPU-Z to confirm the reported speed shows 4800 MT/s and the CAS latency reads CL40.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.