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Two green DDR5 RDIMM modules with gold contacts and black chips, no heat spreader

OWC

OWC 4R8D54R4256P 256GB (2x128GB) DDR5 4800 CL40 ECC Registered RDIMM Dell PowerEdge R6625 R760 R7615 R7625

SKU CH-8ANE-XZ5P1

256 GB kit of two 128 GB DDR5 4800 CL40 ECC registered RDIMMs for Dell PowerEdge R6625, R760, R7615 and R7625 servers

  • Total capacity256 GB (2 × 128 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • CAS latencyCL40
  • Rated voltage1.1 V
  • Buffer typeRegistered
  • Memory rank4Rx4

Capacity 256GB (2 x 128GB)

  • 256 GB capacity with two 128 GB modules
  • DDR5 4800 speed for high-throughput workloads
  • CL40 latency at 1.1 V for efficient operation
  • ECC registered design protects data integrity
  • Validated for Dell PowerEdge R6625 R760 R7615 R7625

Dell PowerEdge R6625 R760 R7615 R7625 Compatibility

This 256GB kit contains two 128GB DDR5 4800 CL40 ECC Registered RDIMM modules. It is built for Dell PowerEdge R6625, R760, R7615 and R7625 servers. The memory targets IT teams expanding capacity in these specific 1U and 2U rack platforms.

Registered ECC DDR5 Interface Limits

Registered ECC DDR5 modules require a server chipset that supports registered signalling and error correction. They will not function in standard desktop motherboards or consumer laptops. Mixing these DIMMs with unbuffered or load-reduced memory is not supported and will prevent boot.

4Rx4 Rank Density Determines Fit

Each 128GB module uses a 4Rx4 organisation, delivering high density per slot. The server memory controller must support 4Rx4 ranks at DDR5 4800 to recognise the full 256GB. Systems limited to lower rank counts or slower speeds cannot use this kit.

How it compares

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

Price $8,046.99
Pricier than about 84% of the 21,161 comparable items (median $397.99).
Total capacity 256 GB (2 × 128 GB)
Higher than about 80% of the 20,941 comparable items (median 32 GB).
Price per GB $31.43 per GB
Pricier than about 90% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameOWC
Part number4R8D54R4256P
Total capacity256 GB (2 × 128 GB)
Product type288-Pin DDR5 ECC RDIMM
Performance
Rated speedDDR5 4800 (PC5 38400)
Memory
CAS latencyCL40
ECC supportYes
Buffer typeRegistered
Memory rank4Rx4
Heat spreaderNo
Power
Rated voltage1.1 V
Compatibility
Compatible systemsDell PowerEdge R6625
Dell PowerEdge R760
Dell PowerEdge R7615
Dell PowerEdge R7625

Other versions of this model

5 more in the same range

Questions about this item

Should I buy the 256GB kit or look for a different capacity?

This kit provides 256GB total using two 128GB modules, matching the listed part number 4R8D54R4256P.

What does the 4800MHz speed mean once installed in a PowerEdge server?

The modules run at DDR5 4800 (PC5-38400) with CL40 latency at 1.1V, delivering the rated throughput when the server memory controller operates at that speed.

Will the 288-pin ECC Registered RDIMM interface work in my R760?

Yes, the 288-pin DDR5 ECC Registered RDIMM form factor is designed for the Dell PowerEdge R6625, R760, R7615 and R7625 and cannot be mixed with unbuffered or load-reduced memory.

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