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Four green 288-pin DDR5 RDIMM modules in anti-static tray

OWC

OWC 512GB (4x128GB) DDR5 4800 CL40 ECC Registered RDIMM memory upgrade

SKU CH-DCPT-P8VZY

512 GB DDR5 ECC registered RDIMM kit (4 × 128 GB, 4800 MT/s, CL40, 1.1 V) for Dell PowerEdge C6600, C6620, MX760C, R660 and R6615 servers

  • Capacity512GB (4 x 128GB)
  • Type288-Pin DDR5 ECC RDIMM
  • SpeedDDR5 4800 (PC5 38400)
  • CAS LatencyCL40
  • Voltage1.1V
  • ECCYes

Capacity 512GB (4 x 128GB)

  • 512 GB total capacity with four 128 GB modules
  • DDR5 4800 speed rated at PC5-38400 CL40
  • ECC Registered RDIMM for server data integrity
  • 1 V operation lowers power draw
  • Validated for Dell PowerEdge C6600 C6620 MX760C R660 R6615

512GB DDR5 4800 ECC Registered Kit

This OWC kit provides 512GB of DDR5 4800 memory across four 128GB registered DIMMs. Each module operates at 1.1V with CL40 latency and 4Rx4 organisation. The 288-pin RDIMMs include ECC for data integrity and are validated for Dell PowerEdge C6600, C6620, MX760C, R660 and R6615 servers.

Suited for Dell PowerEdge upgrades only

The registered ECC design works exclusively in compatible workstation and server platforms listed above. It will not function in standard desktop motherboards and cannot be mixed with unbuffered or load-reduced DIMMs. Buyers needing memory for consumer PCs or non-listed server models should look elsewhere.

JEDEC and RoHS compliant modules

Every DIMM meets JEDEC DDR5 specifications and RoHS requirements, ensuring a warranty-safe upgrade path. The kit contains four matched modules ready for installation; no additional accessories, cables or software licences are included in the package.

Highlights

  • 512 GB total capacity with four 128 GB modules
  • DDR5 4800 speed rated at PC5-38400 CL40
  • ECC Registered RDIMM for server data integrity
  • 1 V operation lowers power draw
  • Validated for Dell PowerEdge C6600 C6620 MX760C R660 R6615

Specifications

BrandOWC
Part Number4R8D54R4512S
Capacity512GB (4 x 128GB)
Type288-Pin DDR5 ECC RDIMM
SpeedDDR5 4800 (PC5 38400)
CAS LatencyCL40
Voltage1.1V
ECCYes
Buffered/RegisteredRegistered
Rank4Rx4
Heat SpreaderNo
Compatible SystemDell PowerEdge C6600
Dell PowerEdge C6620
Dell PowerEdge MX760C
Dell PowerEdge R660
Dell PowerEdge R6615

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Questions about this item

My Dell PowerEdge R660 already has some RDIMMs installed — can I add these 4Rx4 modules alongside them?

This kit uses 4Rx4 registered ECC DDR5 at 4800 MT/s and 1.1 V. Mixing ranks or speeds can prevent the server from posting, so populate all slots with identical modules or follow the R660 memory population rules in the Dell service manual.

The kit ships as four 128 GB sticks — does the R660 need any specific slot order for 512 GB total?

The R660 supports 288-pin DDR5 RDIMMs up to 4800 MT/s. Install the four modules in the channel order shown on the system board label (usually CPU0 slots 1, 2, 3, 4) to enable quad-channel operation and full 512 GB capacity.

After seating the modules, how do I confirm the server sees all 512 GB at 4800 MT/s with ECC active?

Enter the BIOS or iDRAC and check the memory configuration screen — it should list four 128 GB DDR5 4800 MT/s RDIMMs, show ECC enabled, and report 512 GB total with no correctable errors logged.

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