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Four green circuit boards with black memory chips and gold contacts

OWC

OWC 512GB (4x128GB) DDR4 2933 ECC LRDIMM 4Rx4 CL21 1.2V HP Synergy 480 660 Gen10

SKU CH-YKQG-Z7X13

512 GB DDR4-2933 ECC load-reduced LRDIMM kit of four 128 GB modules for HP Synergy 480 and 660 Gen10 servers

  • Capacity512GB (4 x 128GB)
  • Type288-Pin DDR4 ECC LRDIMM
  • SpeedDDR4 2933 (PC4 23400)
  • CAS LatencyCL21
  • Voltage1.2V
  • ECCYes

Capacity 512GB (4 x 128GB)

  • 512GB total capacity from four 128GB modules for large workloads
  • DDR4 2933MHz speed with CL21 latency for responsive server performance
  • ECC load-reduced design protects data integrity in HP Synergy systems
  • 2V operation reduces power draw in dense configurations
  • Backward compatible with 2133, 2400 and 2666MHz platforms

OWC 512GB DDR4 ECC LRDIMM Kit

This kit provides 512GB of DDR4 memory across four 128GB load-reduced DIMMs. It is built for HP Synergy 480 Gen10 and 660 Gen10 compute modules. The modules are ECC LRDIMM, not standard desktop RAM, and cannot mix with unbuffered or registered ECC memory.

Thermals Noise Power in Normal Use

Operating at 1.2V, the modules follow JEDEC DDR4 specifications for voltage and power. No heat spreaders are fitted, so airflow in the server chassis handles cooling. The load-reduced design reduces electrical load on the memory bus during typical operation.

Sustained Load Behaviour

Under continuous workloads the ECC circuitry corrects single-bit errors to maintain data integrity. The 4Rx4 organisation and CL21 latency remain stable at the rated 2933MHz speed. Backward compatibility allows operation at 2133MHz, 2400MHz and 2666MHz if the system requires lower speeds.

Highlights

  • 512GB total capacity from four 128GB modules for large workloads
  • DDR4 2933MHz speed with CL21 latency for responsive server performance
  • ECC load-reduced design protects data integrity in HP Synergy systems
  • 2V operation reduces power draw in dense configurations
  • Backward compatible with 2133, 2400 and 2666MHz platforms

Specifications

BrandOWC
Part Number2L9D44R4512S
Capacity512GB (4 x 128GB)
Type288-Pin DDR4 ECC LRDIMM
SpeedDDR4 2933 (PC4 23400)
CAS LatencyCL21
Voltage1.2V
ECCYes
Buffered/RegisteredLoad Reduced
Rank4Rx4
Heat SpreaderNo
Compatible SystemHP Synergy 480 Gen10
HP Synergy 660 Gen10

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Questions about this item

How do I install the 288-pin DDR4 LRDIMM modules in an HP Synergy 480 Gen10, and what is the common mistake?

Power down the server, open the chassis, align each 288-pin module with the slot key notch, press firmly until the ejector tabs click. The common mistake is mixing these 4Rx4 load-reduced DIMMs with unbuffered or registered ECC memory, which the system will not support.

What maintenance or replacement will the 128GB DDR4 2933 ECC LRDIMM kit need over its service life?

No scheduled maintenance is required for the modules themselves. Keep the server air filters clean so the 1.2V DIMMs stay within thermal limits. If a module fails, replace it with an identical 128GB 4Rx4 PC4-23400 CL21 LRDIMM to maintain matched ranks across the four slots.

What limit appears first when the 512GB DDR4 2933 LRDIMM kit runs sustained workloads on a Synergy 660 Gen10?

The memory controller will down-clock the kit to 2666, 2400 or 2133 MHz if the processor or BIOS does not support the full 2933 MT/s data rate, so sustained throughput is capped at the highest speed the platform actually negotiates.

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