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Green printed circuit board with black memory chips and gold edge connectors

OWC

OWC 16GB DDR5 4800 CL40 1Rx8 288-pin 1.1V ECC Registered RDIMM PowerEdge R760xd2 memory upgrade

SKU CH-Q776-NBRS4

16 GB DDR5-4800 CL40 ECC registered RDIMM for Dell PowerEdge R760xd2 servers

  • Total capacity16 GB
  • Rated speedDDR5 4800 (PC5 38400)
  • CAS latencyCL40
  • Rated voltage1.1 V
  • Buffer typeRegistered
  • Memory rank1Rx8

Capacity 16GB

  • ECC registered design protects data integrity in server workloads
  • 16 GB DDR5 4800 CL40 module expands PowerEdge R760xd2 memory capacity
  • 1 V operating voltage reduces power draw per DIMM
  • Single-rank 1Rx8 layout simplifies population rules for registered memory
  • Replaces Dell part AC239377 SNP1V1N1C/16G for direct compatibility

Server-grade DDR5 ECC RDIMM

This 16 GB DDR5 4800 CL40 module is a registered ECC DIMM built for the Dell PowerEdge R760xd2. It operates at 1.1 V with a 1Rx8 organisation and a 288-pin interface. The part replaces Dell AC239377 and SNP1V1N1C/16G in compatible servers and workstations.

Verify registered ECC requirement

Confirm the target system accepts registered ECC DDR5 memory before ordering. This module will not work in platforms that require unbuffered or load-reduced DIMMs. Mixing registered with unbuffered or load-reduced memory is not supported and will prevent the system from posting.

Single-module capacity upgrade

Install one 16 GB stick to add capacity to an available slot in the R760xd2. The registered buffer reduces electrical load on the memory controller, allowing larger total memory configurations. No heat spreader is fitted, so ensure chassis airflow meets the server’s thermal design.

How it compares

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

Price $383.99
Typical for this category: the median of 21,161 items is $397.99.
Total capacity 16 GB
Lower than about 70% of the 20,941 comparable items (median 32 GB).
Price per GB $24.00 per GB
Pricier than about 69% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameOWC
Part number4R8D51R816 GB
Total capacity16 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 R760xd2

Other versions of this model

5 more in the same range

Questions about this item

What comes in the box and is anything else required for installation?

The package contains one 16 GB DDR5 4800 CL40 1Rx8 288-pin 1.1 V ECC Registered RDIMM. No extra parts or cables are needed to install it in a compatible server.

How do I decide which capacity or version of this module to select?

This listing is a single 16 GB module (part 4R8D51R816GB). Choose the quantity that matches the total memory you want and the slot layout of your PowerEdge R760xd2.

What does the 4800 MT/s rating mean once the module is running in the R760xd2?

The module operates at DDR5-4800 (PC5-38400) with CL40 latency at 1.1 V, delivering the rated bandwidth and error-correction the server platform expects.

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