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Green rectangular DDR5 RDIMM module with black memory chips and gold edge connectors

OWC

OWC 32GB DDR5 4800 CL40 2Rx8 ECC Registered RDIMM memory upgrade

SKU CH-MAKD-JDWB5

32 GB DDR5 4800 CL40 ECC registered RDIMM for Lenovo ThinkSystem SR675 V3, SR850 V3, SR860 V3 and ST650 V3 servers

  • Capacity32GB
  • Type288-Pin DDR5 ECC RDIMM
  • SpeedDDR5 4800 (PC5 38400)
  • CAS LatencyCL40
  • Voltage1.1V
  • ECCYes

Capacity 32GB

  • 32GB capacity expands server memory for heavier workloads
  • DDR5 4800 speed delivers high bandwidth for data-intensive tasks
  • ECC registered design corrects errors to protect critical data
  • 1V operation reduces power draw in dense configurations
  • Validated for ThinkSystem SR675 V3 SR850 V3 SR860 V3 ST650 V3

Server-grade DDR5 ECC RDIMM

This 32GB OWC module is a registered DDR5 DIMM with ECC and a 2Rx8 organisation. It runs at 4800 MT/s (PC5-38400) with CL40 latency at 1.1 V. The part is validated for Lenovo ThinkSystem SR675 V3, SR850 V3, SR860 V3 and ST650 V3 servers and workstations. It is not compatible with standard desktop platforms or with unbuffered or load-reduced memory types.

Sustained-load behaviour

ECC correction and the registered buffer keep data integrity intact during continuous, multi-threaded workloads typical of virtualisation hosts and database servers. The single-rank-per-channel 2Rx8 layout helps maintain stable throughput across all populated slots without the timing penalties that mixed-rank configurations can introduce. JEDEC-compliant operation at 1.1 V limits thermal output during extended duty cycles.

Installation notes

The 288-pin RDIMM installs like any server DIMM: align the key notch, press until the ejectors latch, and verify population order in the system service guide. Common issues arise when mixing this registered ECC module with unbuffered or LRDIMM parts, which the platform will reject at POST. No heat spreader is fitted, so airflow across the module must follow the chassis design. Buyers needing capacities beyond a single 32GB DIMM should plan for additional identical modules.

Highlights

  • 32GB capacity expands server memory for heavier workloads
  • DDR5 4800 speed delivers high bandwidth for data-intensive tasks
  • ECC registered design corrects errors to protect critical data
  • 1V operation reduces power draw in dense configurations
  • Validated for ThinkSystem SR675 V3 SR850 V3 SR860 V3 ST650 V3

Specifications

BrandOWC
Part Number4R8D52R832GB
Capacity32GB
Type288-Pin DDR5 ECC RDIMM
SpeedDDR5 4800 (PC5 38400)
CAS LatencyCL40
Voltage1.1V
ECCYes
Buffered/RegisteredRegistered
Rank2Rx8
Heat SpreaderNo
Compatible SystemLenovo ThinkSystem SR675 V3
Lenovo ThinkSystem SR850 V3
Lenovo ThinkSystem SR860 V3
Lenovo ThinkSystem ST650 V3

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Questions about this item

How much power does the 1.1 V DDR5 4800 module draw when the server runs continuously?

At 1.1 V the DDR5 4800 module operates at the standard JEDEC voltage for DDR5, keeping power draw low even under sustained server workloads.

Which Lenovo ThinkSystem servers must I already own for this 288-pin ECC registered RDIMM to work?

This module is validated for ThinkSystem SR675 V3, SR850 V3, SR860 V3 and ST650 V3; it will not function in standard desktops or unbuffered platforms.

Can I mix this 2Rx8 registered DIMM with the load-reduced or unbuffered modules already in my ThinkSystem?

No — the manufacturer states this ECC registered RDIMM cannot be mixed with unbuffered or load-reduced memory in the same system.

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