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
Four green DDR5 RDIMM sticks without heat spreaders

NEMIX RAM

NEMIX RAM 256GB (4x64GB) DDR5 4800 CL40 ECC RDIMM Dell PowerEdge XE8640 memory upgrade

SKU CH-9T7F-NC2E3

256 GB kit of four 64 GB DDR5 4800 CL40 ECC registered DIMMs validated for Dell PowerEdge XE8640 servers

  • Capacity256GB (4 x 64GB)
  • SpeedDDR5 4800 (PC5 38400)
  • ECCYes
  • Buffered/RegisteredRegistered
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • Voltage1.10V
  • 256 GB total capacity from four 64 GB modules
  • DDR5 4800 speed with CL40 latency for responsive data access
  • ECC registered design detects and corrects memory errors
  • 1 V operation reduces power draw in dense server configs
  • Validated for Dell PowerEdge XE8640 rack server compatibility

Dell PowerEdge XE8640 memory kit

This 256 GB kit contains four 64 GB DDR5 modules built for the Dell PowerEdge XE8640 rack server. Each module is a registered ECC RDIMM rated at 4800 MT/s with CL40 latency. The kit targets IT teams expanding memory capacity in compatible Dell enterprise platforms.

288-pin registered DIMM format

Modules use the standard 288-pin DDR5 RDIMM layout and operate at 1.1 V without a heat spreader. The registered buffer and ECC circuitry help maintain data integrity under sustained server workloads. Chip sources include major OEM suppliers such as Samsung, Micron and Hynix.

Low-voltage DDR5 operation

Running at 1.1 V reduces power draw compared with previous DDR generations while delivering 4800 MT/s throughput. The absence of a heat spreader relies on chassis airflow for cooling, so adequate server ventilation is required. Registered buffering adds minimal latency overhead for stable operation.

Highlights

  • 256 GB total capacity from four 64 GB modules
  • DDR5 4800 speed with CL40 latency for responsive data access
  • ECC registered design detects and corrects memory errors
  • 1 V operation reduces power draw in dense server configs
  • Validated for Dell PowerEdge XE8640 rack server compatibility

Specifications

BrandNEMIX RAM
SeriesDell Server/Workstation Compatible Series Memory
ModelDell DDR5 4800MHZ ECC RDIMM Registered Server Memory
Part NumberMR38400-924K4
Capacity256GB (4 x 64GB)
SpeedDDR5 4800 (PC5 38400)
ECCYes
Buffered/RegisteredRegistered
ChipsetMajor OEM Samsung, Micron, Hynix
Voltage1.10V
Compatible SystemDell
CAS LatencyCL40
Heat SpreaderNo
Type288-Pin DDR5 RDIMM
Rank2Rx4
FeaturesDDR5 ECC Registered RDIMM Server Motherboard Compatible
Package Content256GB (4X64GB) DDR5 4800MHZ PC5-38400 2Rx4 1.1V CL40 288-PIN ECC RDIMM Registered Server Memory KIT

Questions about this item

What DDR5 speed and CAS latency does this 256 GB kit run at?

The kit operates at DDR5 4800 with a CL40 latency, delivering PC5-38400 bandwidth.

Will these 288-pin RDIMMs fit the Dell PowerEdge XE8640 memory slots?

Yes, the 288-pin DDR5 RDIMM form factor matches the XE8640 DIMM sockets exactly.

How do I install the four 64 GB modules in the correct population order?

Follow the XE8640 service manual to populate the channels in the prescribed sequence; the common mistake is skipping a channel and leaving bandwidth unused.

Also in this aisle

People compared these

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