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

OWC

OWC 512GB (4x128GB) DDR4 2933 CL21 ECC LRDIMM 288-pin 1.2V for HP ProLiant XL270d Gen10

SKU CH-12AE-397F7

512 GB kit of four 128 GB DDR4-2933 CL21 ECC load-reduced DIMMs for HP ProLiant XL270d Gen10 servers

  • Total capacity512 GB (4 × 128 GB)
  • Rated speedDDR4 2933 (PC4 23400)
  • CAS latencyCL21
  • Rated voltage1.2 V
  • Buffer typeLoad Reduced
  • Memory rank8Rx4

Capacity 512GB (4 x 128GB)

  • 512 GB total capacity with four 128 GB modules
  • DDR4 2933 speed rated at PC4-23400 CL21
  • ECC load-reduced design for server reliability
  • 2 V operation reduces power draw
  • Compatible with HP ProLiant XL270d Gen10

512GB DDR4 2933 ECC LRDIMM kit

This kit provides 512GB of DDR4 2933 ECC load-reduced memory across four 128GB modules. It is built for the HP ProLiant XL270d Gen10 server platform. The modules operate at 1.2V with CL21 latency and an 8Rx4 rank configuration. Buyers using standard desktop boards or consumer workstations cannot install this memory.

ECC load-reduced operation

The load-reduced design lowers electrical load on the server memory bus, allowing the high 512GB capacity to run at DDR4 2933. ECC corrects single-bit errors to protect data integrity in critical workloads. The kit replaces HP part numbers including P12404-B21 and P00928-B21. It cannot be mixed with unbuffered or standard registered DIMMs in the same system.

Capacity headroom and speed limits

Four 128GB modules fill four slots to reach the 512GB total, leaving no empty slots for further expansion on a four-channel controller. The modules also run at 2133, 2400 and 2666MHz when the platform requires lower speeds. Workloads needing more than 512GB or faster than 2933MT/s will exceed what this kit can deliver.

How it compares

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

Price $2,996.99
Pricier than about 73% 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 $5.85 per GB
Cheaper than about 67% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameOWC
Part number2L9D48R4512S
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 rank8Rx4
Heat spreaderNo
Power
Rated voltage1.2 V
Compatibility
Compatible systemsHP ProLiant XL270d Gen10

Other versions of this model

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Questions about this item

Will the 128GB LRDIMM modules need any firmware updates or heat-spreader maintenance over time?

The modules have no heat spreader and run at standard 1.2V; no firmware updates are required for the memory itself.

What limit appears first when the 8Rx4 LRDIMMs run at 2933 MHz continuously in the XL270d Gen10?

The memory controller's maximum supported speed of 2933 MHz is the first ceiling; the kit is rated for that speed at CL21.

How much power and heat do the four 128GB LRDIMMs generate when the server runs all day?

Each module operates at 1.2V DDR4 voltage; total power draw scales with the four-module kit under sustained load.

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