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Green rectangular DDR4 RDIMM module with black chips on both sides and gold edge contacts

OWC

OWC 128GB DDR4 2933 CL21 8Rx4 288-pin 1.2V ECC Registered RDIMM 2R9D48R4128G memory upgrade

SKU CH-99BM-G3T5B

128 GB DDR4 ECC registered RDIMM running at 2933 MHz CL21 for Lenovo ThinkSystem SD530, SD650, SN550, SN850 and SR590 servers

  • Capacity128GB
  • Type288-Pin DDR4 ECC RDIMM
  • SpeedDDR4 2933 (PC4 23400)
  • CAS Latency21
  • Voltage1.2V
  • ECCYes
  • 128GB capacity fits large datasets in a single module
  • ECC registered design detects and corrects data errors
  • DDR4 2933 speed with CL21 latency supports fast server workloads
  • 2V operation reduces power draw in dense configurations
  • Compatible with Lenovo ThinkSystem SD530, SD650, SN550, SN850, SR590

System-Specific Server Memory

This OWC module delivers 128GB of DDR4 ECC registered memory rated at 2933 MT/s with CL21 latency. It is built for Lenovo ThinkSystem platforms including the SD530, SD650, SN550, SN850 and SR590 running second-generation Xeon Scalable processors. The single DIMM uses an 8Rx4 organisation and operates at the standard 1.2V.

Registered DIMM Build Requirements

The 288-pin registered design requires a motherboard that supports ECC registered DDR4 and cannot be mixed with unbuffered or load-reduced modules. Backward compatibility with 2133, 2400 and 2666 MT/s buses allows deployment in older slots without configuration changes. JEDEC and RoHS compliance ensures the upgrade keeps the original system warranty intact.

Sustained Workload Behaviour

Error-correcting code detects and corrects single-bit errors in real time, preventing silent data corruption during long compute runs. Registered buffering reduces electrical load on the memory controller, helping maintain signal integrity when all channels are populated at 2933 MT/s. The module runs without a heat spreader, relying on chassis airflow for thermal management under continuous load.

Pontos fortes

  • 128GB capacity fits large datasets in a single module
  • ECC registered design detects and corrects data errors
  • DDR4 2933 speed with CL21 latency supports fast server workloads
  • 2V operation reduces power draw in dense configurations
  • Compatible with Lenovo ThinkSystem SD530, SD650, SN550, SN850, SR590

Especificações

BrandOWC
Part Number2R9D48R4128G
Capacity128GB
Type288-Pin DDR4 ECC RDIMM
SpeedDDR4 2933 (PC4 23400)
CAS Latency21
Voltage1.2V
ECCYes
Buffered/RegisteredRegistered
Rank8Rx4
Heat SpreaderNo
Compatible SystemLenovo ThinkSystem (Xeon SP Gen 2) SD530
Lenovo ThinkSystem (Xeon SP Gen 2) SD650
Lenovo ThinkSystem (Xeon SP Gen 2) SN550
Lenovo ThinkSystem (Xeon SP Gen 2) SN850
Lenovo ThinkSystem (Xeon SP Gen 2) SR590

Perguntas sobre este artigo

Will the 1.2V DDR4 2933 module throttle under sustained full-capacity server workloads?

The module runs at standard 1.2V JEDEC voltage with CL21 timings, so thermal throttling is not expected under normal sustained server loads in compatible Lenovo ThinkSystem platforms.

How much heat and noise does the 128GB 8Rx4 registered DIMM add when the system runs all day?

The DIMM has no heat spreader and draws 1.2V; it adds negligible heat and zero acoustic noise, leaving cooling and fan curves unchanged in SD530, SD650, SN550, SN850 or SR590 servers.

Which Lenovo ThinkSystem Xeon SP Gen 2 servers must I already own for this 2R9D48R4128G module to work?

This 288-pin ECC registered RDIMM is validated for Lenovo ThinkSystem SD530, SD650, SN550, SN850 and SR590 with Xeon SP Gen 2 processors.

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