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Four green 288-pin DDR4 LRDIMM modules, no heat spreaders

OWC

OWC 512GB (4x128GB) DDR4 2933 CL21 ECC Load Reduced LRDIMM for Dell PowerEdge XR4510c XR4520c

SKU CH-43DA-QFCH5

512 GB DDR4 2933 ECC load-reduced quad-rank kit of four 128 GB modules for Dell PowerEdge XR4510c and XR4520c 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)

  • Maximise server capacity with 512GB ECC Load Reduced kit
  • JEDEC and RoHS compliant for warranty-safe upgrades
  • Four 128GB modules at DDR4 2933 CL21 1.2V
  • Backward compatible with 2133 2400 2666 MHz speeds
  • Designed for Dell PowerEdge XR4510c and XR4520c

Dell PowerEdge XR4510c XR4520c Memory Kit

This 512GB kit contains four 128GB DDR4 2933 ECC Load Reduced LRDIMM modules built for Dell PowerEdge XR4510c and XR4520c servers. It delivers 1.2V operation with CL21 latency and 4Rx4 organisation for high-density registered memory configurations. The modules are JEDEC and RoHS compliant for warranty-safe upgrades in compatible systems.

Load Reduced ECC Interface Constraints

Load Reduced ECC memory cannot be mixed with unbuffered or standard registered DIMMs in the same platform. The 288-pin DDR4 form factor fits only server and workstation boards wired for LRDIMM signalling. Backward compatibility covers 2133MHz 2400MHz and 2666MHz speeds when the platform negotiates a lower data rate.

512GB Capacity For Dense Workloads

Four ranks per module provide the headroom needed for virtualisation databases and large in-memory datasets on the target PowerEdge platforms. The kit fills four slots at 128GB each so further expansion depends on remaining DIMM slots and the CPU memory controller limit. Systems needing more than 512GB per socket must use higher-density modules or additional channels.

How it compares

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

Price $2,726.99
Pricier than about 72% 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 $5.33 per GB
Cheaper than about 72% of the 20,941 comparable items (median $8.19 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 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 systemsDell PowerEdge XR4510c
Dell PowerEdge XR4520c

Other versions of this model

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Questions about this item

Should I buy the 512GB kit or add single 128GB modules?

The 512GB kit contains four matched 128GB LRDIMMs tested together for the XR4510c and XR4520c. Using the full kit avoids mixing ranks or speeds that can prevent the server from posting.

What does the 2933MHz rating deliver in a PowerEdge XR4510c?

The modules run at DDR4 2933 (PC4-23400) with CL21 latency at 1.2V, providing the maximum memory bandwidth the XR4510c and XR4520c memory controllers support.

Is the 288-pin LRDIMM interface compatible with standard RDIMM slots?

No. Load-Reduced DIMMs use a different electrical buffer than Registered DIMMs and cannot be mixed with RDIMM or unbuffered memory in the same server.

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