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Four green DDR5 RDIMM modules with gold contacts and black chips

OWC

OWC 64GB (4×16GB) DDR5 4800 CL40 ECC Registered RDIMM memory upgrade

SKU CH-HF7W-YQPE7

A 64GB kit of four 16GB DDR5 4800 CL40 ECC registered RDIMMs for PowerEdge R760xa, R860 and R960 servers

  • Total capacity64 GB (4 × 16 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • CAS latencyCL40
  • Rated voltage1.1 V
  • Buffer typeRegistered
  • Memory rank1Rx8

Capacity 64GB (4 x 16GB)

Show 4 more
  • 64 GB kit expands server memory capacity
  • DDR5 4800 CL40 at 1.1 V delivers rated bandwidth
  • ECC registered design protects data integrity in critical workloads
  • Four 16 GB 1Rx8 modules populate Dell PowerEdge R760xa, R860, R960
  • JEDEC compliant RDIMMs validated for workstation and server platforms

Server memory upgrade

This OWC kit provides 64GB of DDR5 ECC registered RDIMM memory across four 16GB modules. It is built for Dell PowerEdge R760xa, R860 and R960 servers that require registered error-correcting memory. Workstations and standard desktop computers cannot use this module type.

Registered DDR5 limits

The modules operate at DDR5 4800 with CL40 latency and 1.1V voltage in a 288-pin form factor. Registered DIMMs add a buffer that reduces electrical load on the memory controller, so they cannot be mixed with unbuffered or load-reduced ECC memory in the same system. The 1Rx8 organisation is fixed for this kit.

Pre-order checklist

Verify that your server model is exactly R760xa, R860 or R960 and that the current configuration uses registered ECC RDIMMs. Confirm the memory slots accept 288-pin DDR5 modules and that the system firmware supports 4800MT/s registered memory. Check the existing population rules before adding four modules.

How it compares

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

Price $1,749.99
Pricier than about 66% of the 21,161 comparable items (median $397.99).
Total capacity 64 GB (4 × 16 GB)
Higher than about 60% of the 20,941 comparable items (median 32 GB).
Price per GB $27.34 per GB
Pricier than about 76% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameOWC
Part number4R8D51R8064S
Total capacity64 GB (4 × 16 GB)
Product type288-Pin DDR5 ECC RDIMM
Performance
Rated speedDDR5 4800 (PC5 38400)
Memory
CAS latencyCL40
ECC supportYes
Buffer typeRegistered
Memory rank1Rx8
Heat spreaderNo
Power
Rated voltage1.1 V
Compatibility
Compatible systemsPowerEdge R760xa
PowerEdge R860
PowerEdge R960

Other versions of this model

5 more in the same range

Questions about this item

Should I pick the 64 GB kit or add single 16 GB modules to reach the same total?

The kit supplies four matched 16 GB modules for 64 GB total, ensuring identical timing and rank across all slots.

What does the 4800 MT/s rating deliver inside a PowerEdge R760xa, R860 or R960?

The server memory controller runs the modules at DDR5 4800 with CL40 latency, providing the rated bandwidth for registered ECC workloads.

How does the 288-pin RDIMM interface limit speed or capacity in these servers?

The 288-pin registered DIMM slot accepts this 1Rx8 module at 1.1 V; the platform's memory controller governs the maximum supported speed and total capacity.

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