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Two green DDR5 RDIMM modules, 288-pin, no heat spreader

OWC

OWC 128GB (2x64GB) DDR5 4800 CL40 2Rx4 1.1V ECC Registered RDIMM memory upgrade

SKU CH-88MP-RR19P

ECC registered DDR5 kit adds 128 GB across two 64 GB modules at 4800 MT/s CL40 for compatible Lenovo ThinkSystem servers

  • Capacity128GB (2 x 64GB)
  • Type288-Pin DDR5 ECC RDIMM
  • SpeedDDR5 4800 (PC5 38400)
  • CAS LatencyCL40
  • Voltage1.1V
  • ECCYes

Capacity 128GB (2 x 64GB)

  • 128 GB total capacity from two 64 GB modules
  • DDR5 4800 speed with CL40 latency for server workloads
  • ECC registered design detects and corrects data errors
  • 1 V operation lowers power draw in dense configurations
  • Validated for ThinkSystem SD650 V3 SD650-I V3 SD665 V3 SD665-N V3 SR630 V3

DDR5 4800 ECC Registered Kit

This OWC kit provides 128 GB of DDR5 4800 memory in two 64 GB registered DIMMs. Each module runs at 1.1 V with CL40 latency and 2Rx4 organisation. The 288-pin RDIMMs include on-die ECC for data integrity in server and workstation environments.

For Lenovo ThinkSystem Servers

The upgrade is validated for ThinkSystem SD650 V3, SD650-I V3, SD665 V3, SD665-N V3 and SR630 V3 platforms. It will not work in standard desktop PCs or consumer motherboards. Builders who need unbuffered or load-reduced DIMMs must choose a different memory type.

JEDEC Compliant, No Heat Spreader

The modules meet JEDEC and RoHS standards for warranty-safe installation. A limited lifetime warranty and free technical support are included. The absence of a heat spreader keeps the profile low for dense server chassis, but buyers needing active cooling should verify airflow in their specific system.

Highlights

  • 128 GB total capacity from two 64 GB modules
  • DDR5 4800 speed with CL40 latency for server workloads
  • ECC registered design detects and corrects data errors
  • 1 V operation lowers power draw in dense configurations
  • Validated for ThinkSystem SD650 V3 SD650-I V3 SD665 V3 SD665-N V3 SR630 V3

Specifications

BrandOWC
Part Number4R8D52R4128P
Capacity128GB (2 x 64GB)
Type288-Pin DDR5 ECC RDIMM
SpeedDDR5 4800 (PC5 38400)
CAS LatencyCL40
Voltage1.1V
ECCYes
Buffered/RegisteredRegistered
Rank2Rx4
Heat SpreaderNo
Compatible SystemLenovo ThinkSystem SD650 V3
Lenovo ThinkSystem SD650-I V3
Lenovo ThinkSystem SD665 V3
Lenovo ThinkSystem SD665-N V3
Lenovo ThinkSystem SR630 V3

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