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Eight green DDR5 RDIMM sticks with black chips, no heat spreaders

NEMIX RAM

NEMIX RAM 1TB (8x128GB) DDR5 4800 CL40 4Rx4 1.10V ECC RDIMM Dell PowerEdge R6625

SKU CH-BJ1M-R4W5B

Eight 128 GB registered ECC DDR5 modules running at 4800 MT/s CL40, built for Dell PowerEdge R6625 servers

  • Capacity1TB (8 x 128GB)
  • Type288-Pin DDR5 RDIMM
  • SpeedDDR5 4800 (PC5 38400)
  • CAS LatencyCL40
  • Voltage1.10V
  • ECCYes

Capacity 1TB (8 x 128GB)

Show 7 more configurations

Struck-through versions exist but are not stocked here.

Rank 4Rx4

  • 1Rx8
  • 2Rx4
  • 2Rx8
  • 4Rx4

Struck-through versions exist but are not stocked here.

  • 1 TB capacity from eight 128 GB modules
  • DDR5 4800 speed with CL40 latency
  • ECC registered RDIMM for data integrity
  • 10 V operation lowers power draw
  • Validated for Dell PowerEdge R6625

Capacity and fit

This kit delivers one terabyte of DDR5 registered memory in eight 128GB modules. It is built for the Dell PowerEdge R6625 and other servers that accept 288-pin ECC RDIMMs. The 4Rx4 organisation suits workloads that demand maximum density per slot.

Upgrade scope

The kit replaces any smaller DDR5 RDIMM configuration or a mixed-capacity set that limits total memory. The jump is worth it when the platform can address the full 1TB and the application benefits from registered ECC at 4800 MT/s. Systems limited to lower capacities or unbuffered modules cannot use this kit.

Platform limits

The modules run at 1.10V with CL40 timing on the DDR5 4800 standard. They require a motherboard that supports 288-pin registered ECC DIMMs and the 4Rx4 rank structure. Platforms restricted to UDIMMs, lower rank counts or slower DDR5 speeds will not post with this memory installed.

Highlights

  • 1 TB capacity from eight 128 GB modules
  • DDR5 4800 speed with CL40 latency
  • ECC registered RDIMM for data integrity
  • 10 V operation lowers power draw
  • Validated for Dell PowerEdge R6625

Specifications

BrandNEMIX RAM
SeriesDell Series Server Memory
ModelDell Compatible DDR5 ECC Registered RDIMM
Part NumberMR38400-744K8
Capacity1TB (8 x 128GB)
Type288-Pin DDR5 RDIMM
SpeedDDR5 4800 (PC5 38400)
CAS LatencyCL40
Voltage1.10V
ECCYes
Buffered/RegisteredRegistered
Rank4Rx4
ChipsetMajor OEM Samsung, Micron, Hynix
Heat SpreaderNo
FeaturesDDR5 ECC Registered Server Motherboard Compatible

Other versions of this model

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Same family, different memory, cooler or clock — compare before you commit.

Questions about this item

Does the 288-pin DDR5 RDIMM form factor fit the Dell PowerEdge R6625 memory slots?

Yes, the 288-pin DDR5 RDIMM modules are the correct form factor for the Dell PowerEdge R6625 memory slots.

Is there a specific population order for the eight 128GB 4Rx4 modules in the R6625?

The Dell PowerEdge R6625 requires modules to be installed in a specific channel order per CPU; consult the server manual for the exact sequence.

Will the Samsung, Micron or Hynix DRAM chips used in these modules require firmware updates later?

The DRAM chips themselves do not require firmware updates; any compatibility improvements come through the Dell server BIOS updates.

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