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Eight green DDR4 RDIMM modules in a row, no heat spreaders

NEMIX RAM

NEMIX RAM 256GB (8x32GB) DDR4 2666 ECC RDIMM Dell PowerEdge R7425 memory upgrade

SKU CH-BK30-S32M5

Eight 32 GB DDR4 2666 ECC registered DIMMs totalling 256 GB for Dell PowerEdge R7425 servers

  • Capacity256GB (8 x 32GB)
  • SpeedDDR4 2666 (PC4 21300)
  • ECCYes
  • Buffered/RegisteredRegistered
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • Voltage1.20V

Capacity 256GB 8X32GB

Show 8 more configurations
  • 256GB total capacity scales memory-heavy workloads across 8 modules
  • DDR4 2666 speed feeds data to CPUs at PC4-21300 bandwidth
  • ECC registered design corrects errors for Dell PowerEdge R7425 reliability
  • 2V operation reduces power draw per 32GB DIMM
  • 288-pin RDIMM form factor fits server memory slots directly

Dell PowerEdge R7425 256GB kit

This registered DDR4 kit delivers 256 gigabytes across eight 32-gigabyte modules for the Dell EMC PowerEdge R7425 server. It targets administrators who need maximum supported capacity for virtualization, database or high-performance computing workloads.

288-pin RDIMM with ECC and 1.2 V operation

Each module is a dual-rank 2Rx4 registered DIMM running at 2666 MT/s with CL19 latency and built-in error correction. The 1.20 volt design matches standard DDR4 server voltage, while the registered buffer reduces electrical load on the memory controller for stable operation in fully populated configurations.

Verify Dell R7425 memory population rules before

Confirm the server BIOS revision supports eight 32-gigabyte RDIMMs at the rated speed and that your CPU configuration allows full-channel population. This kit is not suitable for systems requiring unbuffered UDIMMs, non-ECC memory or DDR5 modules.

Highlights

  • 256GB total capacity scales memory-heavy workloads across 8 modules
  • DDR4 2666 speed feeds data to CPUs at PC4-21300 bandwidth
  • ECC registered design corrects errors for Dell PowerEdge R7425 reliability
  • 2V operation reduces power draw per 32GB DIMM
  • 288-pin RDIMM form factor fits server memory slots directly

Specifications

BrandNEMIX RAM
SeriesDell Server/Workstation Compatible Series Memory
ModelDell DDR4 2666MHZ ECC RDIMM Registered Server Memory
Part NumberMR21300-324K8
Capacity256GB (8 x 32GB)
SpeedDDR4 2666 (PC4 21300)
ECCYes
Buffered/RegisteredRegistered
ChipsetMajor OEM Samsung, Micron, Hynix
Voltage1.20V
Compatible SystemDell
CAS LatencyCL19
Heat SpreaderNo
Type288-Pin DDR4 RDIMM
Rank2Rx4
FeaturesDDR4 ECC Registered RDIMM Server Motherboard Compatible
Package Content256GB (8X32GB) DDR4 2666MHZ PC4-21300 1Rx8 1.2V CL19 288-PIN ECC RDIMM Registered Server Memory KIT

Other versions of this model

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Questions about this item

Does the DDR4 2666 PC4-21300 interface limit the R7425 to 2666 MT/s even if the CPU supports faster speeds?

Yes, the modules run at DDR4 2666 (PC4-21300) and the memory controller will clock them at that rate regardless of higher CPU capability.

What physical slot and clearance does the 288-pin RDIMM kit need inside the PowerEdge R7425?

Each 32 GB stick uses a standard 288-pin DDR4 RDIMM slot; the R7425 has 24 such slots so all eight modules fit without height-adapter brackets.

Which population sequence avoids the common mis-match when installing eight 2Rx4 RDIMMs in the R7425?

Fill the eight slots belonging to the first processor (channels 0–3, two DIMMs per channel) before adding any to the second CPU; skipping this order causes a boot-time memory configuration error.

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