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Two green DDR4 LRDIMM sticks with gold contacts, no heat spreader

OWC

OWC 256GB (2x128GB) DDR4 3200 CL22 4Rx4 ECC LRDIMM memory upgrade

SKU CH-GFPC-FNRQK

A 256 GB dual-module DDR4 3200 CL22 ECC LRDIMM kit for Dell PowerEdge MX750c, R650 and R750 servers

  • Total capacity256 GB (2 × 128 GB)
  • Rated speedDDR4 3200 (PC4 25600)
  • CAS latencyCL22
  • Rated voltage1.2 V
  • Buffer typeLoad Reduced
  • Memory rank4Rx4

Capacity 256GB (2 x 128GB)

  • ECC load-reduced design prevents errors in Dell PowerEdge MX750c, R650, R750 servers
  • 256 GB total capacity from two 128 GB modules expands memory headroom
  • DDR4 3200 CL22 at 1.2 V delivers JEDEC-standard speed and efficiency
  • 4Rx4 288-pin LRDIMM form factor fits qualified server slots exactly
  • Backward compatible with 2133, 2400, 2666, 2933 MHz systems for flexible deployment

Server memory upgrade kit

This 256 GB kit contains two 128 GB DDR4 3200 CL22 ECC load-reduced DIMMs built for Dell PowerEdge MX750c, R650 and R750 servers. It targets administrators who need maximum registered capacity in those specific platforms.

Thermals and power

Modules run at 1.2 V without heat spreaders, relying on server chassis airflow for cooling. Load-reduced buffering reduces electrical load on the memory bus, helping keep power draw predictable under sustained workloads.

Deciding specification

The 4Rx4 load-reduced organisation means these DIMMs cannot be mixed with unbuffered or standard registered ECC memory; the platform must support LRDIMM topology to use this kit.

How it compares

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

Price $1,603.99
Pricier than about 65% of the 21,161 comparable items (median $397.99).
Total capacity 256 GB (2 × 128 GB)
Higher than about 80% of the 20,941 comparable items (median 32 GB).
Price per GB $6.27 per GB
Cheaper than about 63% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameOWC
Part number3L2D44R4256P
Total capacity256 GB (2 × 128 GB)
Product type288-Pin DDR4 ECC LRDIMM
Performance
Rated speedDDR4 3200 (PC4 25600)
Memory
CAS latencyCL22
ECC supportYes
Buffer typeLoad Reduced
Memory rank4Rx4
Heat spreaderNo
Power
Rated voltage1.2 V
Compatibility
Compatible systemsDell PowerEdge MX750c
Dell PowerEdge R650
Dell PowerEdge R750

Other versions of this model

5 more in the same range

Questions about this item

How do I install these 288-pin LRDIMMs in a Dell PowerEdge R750, and what is the common mistake?

Power down the server, open the chassis, align each module's notch with the slot key, and press firmly until both ejector clips click; the step often missed is populating slots in the exact sequence the R750 service manual specifies for 4Rx4 LRDIMMs.

What maintenance or replacement will the 128GB modules need over time?

No routine maintenance is required; if a module fails, replace the individual 128GB LRDIMM — ECC error logs in the iDRAC or BIOS will identify the faulty stick.

What limit appears first when the 3200MHz kit runs sustained workloads on a PowerEdge MX750c?

The memory controller down-clocks populated 4Rx4 LRDIMM slots to 2933MHz, so sustained throughput is capped at that lower JEDEC speed rather than the rated 3200MHz.

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