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Two green DDR5 ECC registered RDIMM modules, 288-pin, no heat spreader

OWC

OWC 64GB (2x32GB) DDR5 4800 CL40 ECC Registered RDIMM for Dell PowerEdge HS5610 HS5620

SKU CH-EDD0-K5H35

Dual 32 GB DDR5 4800 CL40 ECC registered RDIMMs for Dell PowerEdge HS5610 and HS5620 servers

  • Total capacity64 GB (2 × 32 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • CAS latencyCL40
  • Rated voltage1.1 V
  • Buffer typeRegistered
  • Memory rank2Rx8

Capacity 64GB (2 x 32GB)

  • 64 GB kit expands server memory for demanding workloads
  • DDR5 4800 speed with CL40 latency accelerates data throughput
  • ECC registered design detects and corrects single-bit errors
  • 1 V operation reduces power draw per module
  • Validated for Dell PowerEdge HS5610 and HS5620 systems

Server memory kit for Dell PowerEdge

This OWC kit supplies 64GB of DDR5 4800 ECC registered RDIMM across two 32GB modules. It is built for Dell PowerEdge HS5610 and HS5620 servers that require registered memory with error correction. The modules run at 1.1V with CL40 latency and a 2Rx8 rank structure. They will not work in standard desktop computers or alongside unbuffered or load-reduced DIMMs.

Upgrade path from lower-capacity RDIMMs

Replacing smaller registered DIMMs with this 64GB kit increases total memory without changing the memory type your server expects. The jump is worth it when workloads exceed the capacity of the existing modules and the platform supports the full 4800 speed. Mixing with unbuffered or load-reduced memory is not supported, so all slots must use the same registered ECC specification.

Straightforward DIMM installation

Each 288-pin module seats in the server's standard DDR5 RDIMM slots with no extra tools. The most common issue is mixing registered ECC with unbuffered or load-reduced DIMMs, which prevents the system from posting. Confirm every populated slot uses identical registered ECC modules before powering on.

How it compares

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

Price $1,488.99
Pricier than about 64% of the 21,161 comparable items (median $397.99).
Total capacity 64 GB (2 × 32 GB)
Higher than about 60% of the 20,941 comparable items (median 32 GB).
Price per GB $23.27 per GB
Pricier than about 68% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameOWC
Part number4R8D52R8064P
Total capacity64 GB (2 × 32 GB)
Product type288-Pin DDR5 ECC RDIMM
Performance
Rated speedDDR5 4800 (PC5 38400)
Memory
CAS latencyCL40
ECC supportYes
Buffer typeRegistered
Memory rank2Rx8
Heat spreaderNo
Power
Rated voltage1.1 V
Compatibility
Compatible systemsDell PowerEdge HS5610
Dell PowerEdge HS5620

Other versions of this model

5 more in the same range

Questions about this item

Will the 288-pin DDR5 RDIMM modules fit the memory slots in a Dell PowerEdge HS5610 or HS5620?

Yes. These 288-pin DDR5 ECC Registered DIMMs are built to the JEDEC standard for the PowerEdge HS5610 and HS5620, so they seat directly in the server's DDR5 RDIMM slots.

What is the correct way to install the two 32 GB modules, and what step do people often miss?

Power down the server, open the chassis, align each module's notch with the slot key, and press firmly until both retention clips lock. The step often missed is seating both modules in the correct channel pair so the memory controller sees the full 64 GB at 4800 MT/s.

When will the ECC Registered RDIMMs need replacement or maintenance?

The modules have no moving parts and no heat spreader, so they require no routine maintenance. Replace them only if a memory diagnostic reports uncorrectable ECC errors or if you upgrade to a higher capacity kit.

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