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Green rectangular DDR4 memory module with gold contacts and black chips, no heat spreader

OWC

OWC 16GB DDR4 2933MHz CL21 ECC Registered RDIMM memory upgrade for Lenovo ThinkSystem SR650 SR950

SKU CH-YTMY-3GWKQ

16 GB DDR4-2933 ECC registered RDIMM for Lenovo ThinkSystem SR650 and SR950 servers

  • Capacity16GB
  • Type288-Pin DDR4 ECC RDIMM
  • SpeedDDR4 2933 (PC4 23400)
  • CAS LatencyCL21
  • Voltage1.2V
  • ECCYes

Capacity 16GB

  • ECC registered design protects data integrity in critical workloads
  • 16 GB capacity expands server memory for larger datasets
  • 2933 MHz DDR4 speed matches Xeon SP Gen 2 platform specs
  • 2 V operation reduces power draw per module
  • Backward compatible with 2133, 2400 and 2666 MHz systems

Server-Specific DDR4 ECC RDIMM

This 16GB DDR4 2933MHz CL21 registered module is built for Lenovo ThinkSystem SR650 and SR950 servers running Xeon SP Gen 2 processors. It delivers ECC error correction and registered signalling for data integrity in multi-socket workloads. The 1.2V 288-pin RDIMM is not compatible with standard desktop motherboards or unbuffered memory configurations. Buyers who need consumer DIMMs or laptop SO-DIMMs should look elsewhere.

Sustained Load Stability

ECC registered architecture corrects single-bit errors and detects multi-bit errors during continuous operation, reducing silent data corruption in database and virtualisation tasks. The module operates at DDR4 2933 (PC4-23400) with CL21 latency and maintains JEDEC-compliant 1.2V voltage under full population. Backward compatibility with 2133MHz, 2400MHz and 2666MHz buses allows mixed-speed deployments without downclocking the entire channel. Systems requiring higher capacities per slot or non-ECC memory will not be served by this part.

Lenovo Part Replacement

This OWC module replaces Lenovo part numbers 01AG631, 4ZC7A08708 and 4ZC7A08741, offering a direct upgrade path for ThinkSystem SR650 and SR950 platforms. The 2Rx8 rank organisation fits existing memory configurations without requiring BIOS changes. The jump is worthwhile when expanding memory capacity for virtualisation density or extending the service life of deployed infrastructure. Buyers needing larger single-module capacities or different rank structures must verify platform limits before ordering.

Puncte forte

  • ECC registered design protects data integrity in critical workloads
  • 16 GB capacity expands server memory for larger datasets
  • 2933 MHz DDR4 speed matches Xeon SP Gen 2 platform specs
  • 2 V operation reduces power draw per module
  • Backward compatible with 2133, 2400 and 2666 MHz systems

Specificații

BrandOWC
Part Number2R9D42R816GB
Capacity16GB
Type288-Pin DDR4 ECC RDIMM
SpeedDDR4 2933 (PC4 23400)
CAS LatencyCL21
Voltage1.2V
ECCYes
Buffered/RegisteredRegistered
Rank2Rx8
Heat SpreaderNo
Compatible SystemLenovo ThinkSystem (Xeon SP Gen 2) SR650
Lenovo ThinkSystem (Xeon SP Gen 2) SR950

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Întrebări despre acest articol

How much power does each 1.2V DDR4 2933MHz module draw when the server runs continuously?

Each module operates at 1.2V; total power depends on how many 16GB 2Rx8 RDIMMs are populated and the server workload.

What must the Lenovo ThinkSystem SR650 or SR950 already have for this ECC Registered RDIMM to function?

The system must support DDR4 288-pin ECC Registered memory and a Xeon SP Gen 2 processor; unbuffered DIMMs cannot be mixed with this module.

Will this 2933MHz CL21 RDIMM run reliably alongside existing 2133MHz or 2400MHz modules in the same server?

Yes, the module is backward compatible with 2133MHz, 2400MHz and 2666MHz speeds; all populated slots will run at the lowest common speed.

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