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Four green DDR4 RDIMM modules with black chips, no heat spreaders

NEMIX RAM

NEMIX RAM MR25600-924K4 256GB (4x64GB) DDR4 3200 ECC RDIMM memory upgrade

SKU CH-8MRK-RMC72

A 256GB kit of four 64GB DDR4 3200 ECC registered DIMMs validated for Dell PowerEdge XE7100, XE7420 and XE7440 servers

  • Total capacity256 GB (4 × 64 GB)
  • Rated speedDDR4 3200 (PC4 25600)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL22
  • Buffer typeRegistered
  • Rated voltage1.2 V

Capacity 256GB 4X64GB

Show 3 more
  • 256 GB total capacity from four 64 GB modules
  • DDR4 3200 speed rated at PC4-25600 bandwidth
  • ECC registered design detects and corrects data errors
  • 20 V operation reduces server power draw
  • Validated for Dell PowerEdge XE7100 XE7420 XE7440 racks

Dell PowerEdge ECC RDIMM kit

This 256GB kit contains four 64GB DDR4 3200 ECC registered DIMMs validated for Dell EMC PowerEdge XE7100, XE7420 and XE7440 rack servers. It targets IT teams expanding memory capacity in those specific platforms. Builders using consumer motherboards or non-Dell workstations should look elsewhere.

Thermals noise and power

Each module operates at 1.2V without a heat spreader, relying on server chassis airflow for cooling. Registered buffering reduces electrical load on the memory controller during sustained workloads. No acoustic or thermal specifications beyond standard JEDEC DDR4 limits are published.

Registered 2Rx4 organisation

The 2Rx4 rank structure and CL22 latency determine how the memory controller schedules commands on these 288-pin RDIMMs. Compatibility depends on the server firmware recognising this exact organisation. Systems requiring different rank configurations or unbuffered DIMMs will not accept this kit.

How it compares

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

Price $1,676.99
Pricier than about 66% of the 21,161 comparable items (median $397.99).
Total capacity 256 GB (4 × 64 GB)
Higher than about 80% of the 20,941 comparable items (median 32 GB).
Price per GB $6.55 per GB
Cheaper than about 60% 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 DDR4 3200 MHz ECC RDIMM Registered Server Memory
Part numberMR25600-924K4
Total capacity256 GB (4 × 64 GB)
Product type288-Pin DDR4 RDIMM
Performance
Rated speedDDR4 3200 (PC4 25600)
Processor
ChipsetMajor OEM Samsung, Micron, Hynix
Memory
CAS latencyCL22
ECC supportYes
Buffer typeRegistered
Heat spreaderNo
Memory rank2Rx4
Power
Rated voltage1.2 V
Compatibility
Compatible systemsDell
In the box
Included items256 GB (4 × 64 GB) DDR4 3200 MHz PC4-25600 2Rx4 1.2 V CL22 288-PIN ECC RDIMM Registered Server Memory KIT

Other versions of this model

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Questions about this item

How do I install the four 64GB DDR4 RDIMMs in my Dell PowerEdge XE7440, and what step is often missed?

Power down the server, open the chassis, align each 288-pin module with the slot key and press firmly until both latches click; the step often missed is verifying in BIOS that all 256GB are recognised at 3200 MT/s.

What maintenance or replacement will this 256GB ECC registered kit need over its service life?

No routine maintenance is required; if a module fails the ECC logging will identify it, and the individual 64GB RDIMM can be replaced without disturbing the other three.

What limit appears first when this memory runs sustained workloads on a PowerEdge XE7100?

The CAS latency of CL22 at 1.20V sets the timing ceiling; sustained throughput is bounded by the DDR4 3200 transfer rate before thermal or voltage limits are reached.

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