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Four green DDR4 LRDIMM modules with gold contacts, no heat spreaders

OWC

OWC 512GB (4x128GB) DDR4 2933 CL21 4Rx4 288-pin 1.2V ECC LRDIMM Kit

SKU CH-7K5D-GF5JA

512 GB DDR4-2933 ECC load-reduced quad-rank kit for HP ProLiant Gen10 servers

  • Total capacity512 GB (4 × 128 GB)
  • Rated speedDDR4 2933 (PC4 23400)
  • CAS latencyCL21
  • Rated voltage1.2 V
  • Buffer typeLoad Reduced
  • Memory rank4Rx4

Capacity 512GB (4 x 128GB)

  • ECC load-reduced design protects data integrity in servers
  • 512 GB kit (4 × 128 GB) expands memory capacity for heavy workloads
  • DDR4 2933 CL21 at 1.2 V delivers rated speed with standard voltage
  • 288-pin LRDIMM form factor fits HP ProLiant Gen10 DL560 DL580 DX360 DX380 DX560
  • Backward compatible with 2133 2400 2666 MHz systems for flexible deployment

OWC 512GB DDR4 ECC LRDIMM Kit

This kit provides 512GB of DDR4 ECC Load Reduced memory across four 128GB modules for HP ProLiant Gen10 servers. It targets administrators upgrading DL560, DL580, DX360, DX380 or DX560 platforms that require registered LRDIMM technology.

Thermals, noise and power draw

Each module operates at 1.2V without a heat spreader, relying on server chassis airflow for cooling. The low voltage helps limit power consumption in dense memory configurations while the ECC Load Reduced design maintains signal integrity at 2933MHz.

Build quality and connectors

The 288-pin LRDIMM form factor fits only slots wired for Load Reduced memory and cannot be mixed with unbuffered or standard registered DIMMs. Backward compatibility with 2133MHz, 2400MHz and 2666MHz bus speeds eases deployment in existing Gen10 fleets.

How it compares

Measured against everything we stock in Model-Specific Memory Upgrades, at today’s prices. Recalculated every night.

Price $2,595.99
Pricier than about 71% of the 21,161 comparable items (median $397.99).
Total capacity 512 GB (4 × 128 GB)
Higher than about 90% of the 20,941 comparable items (median 32 GB).
Price per GB $5.07 per GB
Cheaper than about 76% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameOWC
Part number2L9D44R4512S
Total capacity512 GB (4 × 128 GB)
Product type288-Pin DDR4 ECC LRDIMM
Performance
Rated speedDDR4 2933 (PC4 23400)
Memory
CAS latencyCL21
ECC supportYes
Buffer typeLoad Reduced
Memory rank4Rx4
Heat spreaderNo
Power
Rated voltage1.2 V
Compatibility
Compatible systemsHP ProLiant DL560 Gen10
HP ProLiant DL580 Gen10
HP ProLiant DX360 Gen10
HP ProLiant DX380 Gen10
HP ProLiant DX560 Gen10

Other versions of this model

5 more in the same range

Questions about this item

How do I install the four 128GB LRDIMM modules in my HP ProLiant Gen10 server and what step is often missed?

Power down, open the chassis, align each 288-pin module with its slot and press until the latches click; the step often missed is populating all four channels per CPU socket so the 512GB kit runs at 2933MHz CL21.

What maintenance or replacement will the OWC 512GB DDR4 ECC LRDIMM kit need over its service life?

The modules have no heat spreaders and no moving parts, so no scheduled maintenance is required; replacement is only needed if a DIMM fails ECC correction or the server is upgraded beyond 512GB.

What limit appears first when the 4Rx4 LRDIMMs run sustained workloads at 1.2V?

The memory controller’s maximum supported rank count per channel is reached before thermal or voltage limits, capping further capacity expansion on the same CPU socket.

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