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Two green 288-pin DDR5 ECC RDIMM modules without heat spreaders

OWC

OWC 64GB (2x32GB) DDR5 4800 CL40 2Rx8 288-pin 1.1V ECC RDIMM Kit for PowerEdge R760xd2

SKU CH-FC3E-9Q85B

Two 32 GB DDR5 4800 CL40 ECC registered RDIMMs at 1.1 V for PowerEdge R760xd2 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)

  • ECC registered design protects data integrity in server workloads
  • 64 GB kit (2 × 32 GB) expands capacity for virtualisation and databases
  • DDR5 4800 CL40 at 1.1 V delivers high throughput with low power draw
  • 288-pin RDIMM form factor fits PowerEdge R760xd2 memory slots directly
  • Replaces Dell part AC239378 SNPW08W9C/32G for validated compatibility

Server ECC RDIMM Kit

This OWC kit provides 64GB of DDR5 ECC registered memory in a matched pair of 32GB modules. It is built for the Dell PowerEdge R760xd2 server platform and runs at 4800 MT/s with CL40 latency at 1.1V. The 2Rx8 organization and 288-pin form factor match the system's registered DIMM slots. Workstations and standard desktops cannot use this memory type.

Registered ECC Benefits

The registered buffer reduces electrical load on the server memory controller, allowing stable operation with high module counts. On-die ECC corrects single-bit errors to protect data integrity in critical workloads. JEDEC and RoHS compliance ensures the modules meet industry specifications for server deployment. The kit replaces Dell part numbers AC239378 and SNPW08W9C/32G for direct compatibility.

Platform Verification Required

Confirm the target system is a PowerEdge R760xd2 before ordering, as registered ECC RDIMMs are physically incompatible with unbuffered or load-reduced memory slots. The server must support DDR5 4800 registered DIMMs at 1.1V with 2Rx8 rank configuration. Mixing this kit with any non-registered or LRDIMM modules will prevent the system from booting.

How it compares

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

Price $1,648.99
Pricier than about 66% 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 $25.77 per GB
Pricier than about 70% 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 systemsPowerEdge R760xd2

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Questions about this item

Will the 2Rx8 ECC registered DIMMs need replacement after a certain number of write cycles?

DDR5 ECC registered memory does not wear out from write cycles like flash storage; the modules are rated for continuous server operation and carry a limited lifetime warranty.

What thermal limit appears first when the kit runs at 4800 MT/s under sustained load?

The JEDEC-specified 1.1 V operating voltage keeps power draw low, so the platform's DIMM-slot airflow limit is reached before any module thermal threshold.

How much heat and noise does the 64 GB kit add when the PowerEdge R760xd2 runs all day?

The modules have no heat spreader and draw minimal power at 1.1 V, so they add negligible heat and zero acoustic noise; system fans remain the only audible source.

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