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Eight green 288-pin DDR4 LRDIMM sticks in a row

OWC

OWC 512GB (8x64GB) DDR4 2933MHz PC4-23400 CL21 4Rx4 ECC LRDIMM 1.2V 288-pin Server RAM

SKU CH-1G9F-ABBHQ

Eight 64 GB DDR4-2933 ECC LRDIMM modules provide 512 GB of load-reduced server memory at 1.2 V

  • Total capacity512 GB (8 × 64 GB)
  • Rated speedDDR4 2933 (PC4 23400)
  • CAS latencyCL21
  • Rated voltage1.2 V
  • Buffer typeLoad Reduced
  • Memory rank4Rx4

Capacity 512GB (8 x 64GB)

  • 512GB total capacity with eight 64GB modules for dense server workloads
  • DDR4 2933MHz CL21 speed supports 2133, 2400 and 2666MHz backward compatibility
  • ECC load-reduced design maintains data integrity in multi-socket servers
  • 2V operation reduces power draw across 288-pin LRDIMM slots
  • JEDEC-compliant, RoHS-certified kit validated for OEM warranty-safe upgrades

512GB DDR4 2933 ECC LRDIMM kit

This OWC kit supplies 512GB of DDR4 server memory across eight 64GB load-reduced DIMMs. Each module runs at 2933MHz with CL21 latency at 1.2V and provides ECC error correction. The 288-pin form factor fits server and workstation platforms that support registered memory.

Suited for multi-socket servers

The 4Rx4 organisation and load-reduced design target platforms that require maximum capacity per channel. It will not work in standard desktop computers and cannot be mixed with unbuffered DIMMs. Buyers needing non-ECC memory or consumer form factors should look elsewhere.

Fills eight DIMM slots in a compatible server

The kit occupies all populated channels in typical dual-processor configurations, freeing the builder from sourcing individual modules. Backward compatibility with 2133MHz, 2400MHz and 2666MHz bus speeds allows deployment in older systems without BIOS changes. JEDEC compliance ensures the memory initialises at rated timings on qualified hardware.

How it compares

Measured against everything we stock in ECC Server RAM, at today’s prices. Recalculated every night.

Price $3,379.99
Pricier than about 90% of the 6,523 comparable items (median $188.99).
Total capacity 512 GB (8 × 64 GB)
Higher than about 91% of the 6,064 comparable items (median 32 GB).
Price per GB $6.60 per GB
Cheaper than about 57% of the 6,064 comparable items (median $7.25 per GB).

New to this? Buying memory and SSDs with crypto — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Brand nameOWC
Part number2L9D44R4512K
Total capacity512 GB (8 × 64 GB)
Product type288-Pin DDR4 ECC LRDIMM
Performance
Rated speedDDR4 2933 (PC4 23400)
Memory
CAS latencyCL21
ECC supportYes
Buffer typeLoad Reduced
Memory rank4Rx4
Kit configurationDual Channel Kit
Heat spreaderNo
Power
Rated voltage1.2 V

Other versions of this model

5 more in the same range

Questions about this item

What motherboard slot and memory type does this 288-pin DDR4 LRDIMM kit require?

The kit fits DDR4 server or workstation boards with 288-pin LRDIMM slots that support ECC load-reduced memory; it will not work in standard desktop UDIMM slots.

Can these 2933MHz modules run with existing 2400MHz DDR4 ECC LRDIMMs in the same server?

Yes, the modules are backward compatible with 2133MHz, 2400MHz and 2666MHz DDR4 ECC load-reduced DIMMs, so they will downclock to match the slowest installed speed.

How do I confirm the full 512GB is recognised at 2933MHz CL21 after installation?

Check the BIOS or UEFI memory summary for eight 64GB modules running at 2933MHz with CL21 timings and ECC load-reduced status, then run a memory diagnostic to verify stability.

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