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Two green DDR4 LRDIMM modules with gold contacts and black chips

OWC

OWC 256GB (2×128GB) DDR4 3200 CL22 4Rx4 288-pin 1.2V ECC LRDIMM Kit for Dell PowerEdge R6525 R750xa R7525

SKU CH-5N22-QY6BE

Adds 256 GB of DDR4 3200 ECC load-reduced memory to compatible Dell PowerEdge 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)

  • 256 GB capacity with two 128 GB modules for high-density server memory
  • DDR4 3200 speed at CL22 latency for responsive data processing
  • ECC load-reduced design detects and corrects errors for reliable operation
  • 2 V operation reduces power draw in Dell PowerEdge R6525, R750xa and R7525
  • JEDEC and RoHS compliant kit tested to meet OEM specifications

Server-specific DDR4 LRDIMM kit

This OWC kit supplies 256GB of DDR4 ECC Load Reduced memory in two 128GB modules. It is built for Dell PowerEdge R6525, R750xa and R7525 servers that require registered LRDIMM technology. The modules run at 3200MHz with a CAS latency of CL22 and operate at 1.2V. This memory is not compatible with standard desktop computers or consumer motherboards.

Verify LRDIMM requirement and slot count

Before ordering, confirm that your server platform supports DDR4 ECC Load Reduced DIMMs and cannot accept unbuffered or standard registered ECC modules. The kit occupies two 288-pin DIMM slots, so ensure the target system has at least two free slots of the correct type. Mixing this LRDIMM kit with other memory types will prevent the system from booting.

Adds 256GB to supported PowerEdge servers

When installed in a compatible Dell PowerEdge R6525, R750xa or R7525, the kit adds 256GB of error-correcting capacity for virtualisation, database or compute workloads. The modules are backward compatible with 2133MHz, 2400MHz, 2666MHz and 2933MHz bus speeds. JEDEC-standard construction ensures a warranty-safe upgrade without requiring changes to the existing power or cooling infrastructure.

How it compares

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

Price $1,407.99
Pricier than about 64% 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 $5.50 per GB
Cheaper than about 70% 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 R6525
Dell PowerEdge R750xa
Dell PowerEdge R7525

Other versions of this model

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Questions about this item

What comes in the OWC 256GB DDR4 3200 LRDIMM kit and is anything else needed?

The kit includes two 128GB DDR4 3200 CL22 4Rx4 288-pin 1.2V ECC load-reduced DIMMs. No additional parts are required for installation in a compatible Dell PowerEdge server.

Which capacity version should I choose for a Dell PowerEdge R7525?

This 256GB kit (2×128GB) is the capacity offered for the R7525, R6525 and R750xa. Select it when you need 256GB of ECC load-reduced memory across two DIMM slots.

What does the 3200 CL22 rating mean once the modules are installed in a PowerEdge R6525?

The modules will run at up to 3200 MT/s with CAS latency 22 at 1.2V. They also down-clock automatically to 2933, 2666, 2400 or 2133 MT/s if the server requires a lower speed.

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