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Green bare circuit board DDR4 RDIMM 64GB 288pin

OWC

OWC 64GB DDR4 3200MHz CL22 1.2V 288pin ECC Registered RDIMM 3R2D42R464GB

SKU CH-A79P-MKADC

A 64GB DDR4 ECC registered RDIMM running at 3200MHz CL22, validated for Dell PowerEdge C6520, C6525, MX750c, R650 and R650xs servers

  • Total capacity64 GB
  • Rated speedDDR4 3200 (PC4 25600)
  • CAS latencyCL22
  • Rated voltage1.2 V
  • Buffer typeRegistered
  • Memory rank2Rx4

Capacity 64GB

  • 64GB capacity expands server memory for heavy workloads
  • DDR4 3200MHz speed delivers high data throughput
  • ECC Registered design corrects errors for reliable operation
  • CL22 latency at 1.2V balances performance and efficiency
  • Validated for Dell PowerEdge C6520 C6525 MX750c R650 R650xs

Server-grade ECC memory for Dell PowerEdge

This 64GB DDR4 3200MHz registered DIMM is built for Dell PowerEdge C6520, C6525, MX750c, R650 and R650xs servers. It delivers error-correcting, registered performance required by these platforms and is not compatible with standard desktop computers.

Verify registered ECC support before ordering

Your system must accept 288-pin DDR4 RDIMMs with ECC and registered buffering; mixing with unbuffered modules will prevent operation. Confirm the server model matches the listed PowerEdge series and that all installed DIMMs share the same capacity, speed and manufacturer for optimal stability.

Steady throughput under continuous workloads

Rated at CL22 latency and 1.2V, the module maintains JEDEC-compliant operation during sustained server tasks such as virtualization, database serving or compute clusters. The registered design reduces electrical load on the memory controller, helping consistent data integrity over long duty cycles.

How it compares

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

Price $365.99
Typical for this category: the median of 21,161 items is $397.99.
Total capacity 64 GB
Higher than about 60% of the 20,941 comparable items (median 32 GB).
Price per GB $5.72 per GB
Cheaper than about 68% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameOWC
Part number3R2D42R464 GB
Total capacity64 GB
Product type288-Pin DDR4 ECC RDIMM
Performance
Rated speedDDR4 3200 (PC4 25600)
Memory
CAS latencyCL22
ECC supportYes
Buffer typeRegistered
Memory rank2Rx4
Heat spreaderNo
Power
Rated voltage1.2 V
Compatibility
Compatible systemsDell PowerEdge C6520
Dell PowerEdge C6525
Dell PowerEdge MX750c
Dell PowerEdge R650
Dell PowerEdge R650xs

Other versions of this model

5 more in the same range

Questions about this item

Does the OWC 64GB DDR4 3200MHz RDIMM ship with any extra hardware such as screws or a heat spreader, or is it just the module?

Only the 64GB 288-pin DDR4 3200 CL22 1.2V ECC registered RDIMM is included; there is no heat spreader and no mounting hardware in the box.

The listing mentions several Dell PowerEdge models — how do I know which of those systems this specific 64GB module fits?

The module is validated for Dell PowerEdge C6520, C6525, MX750c, R650 and R650xs; match your server model to that list before ordering.

What does the 3200MHz PC4-25600 rating mean for actual throughput once the DIMM is installed in a compatible PowerEdge server?

It delivers a peak transfer rate of 25600 MB/s at 3200 MT/s with CL22 latency, provided the server's memory controller runs the slot at that speed.

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