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Green printed circuit board with black memory chips in a 288-pin DDR5 RDIMM form factor

OWC

OWC 16GB DDR5 4800 CL40 1Rx8 288-pin 1.1V ECC Registered RDIMM server RAM

SKU CH-RMWQ-62MFF

16 GB DDR5 4800 CL40 ECC Registered RDIMM for server and workstation upgrades

  • Capacity16GB
  • Type288-Pin DDR5 ECC RDIMM
  • SpeedDDR5 4800 (PC5 38400)
  • CAS LatencyCL40
  • Voltage1.1V
  • ECCYes
  • 16 GB DDR5 4800 for server workloads
  • CL40 latency at 1.1 V for stable throughput
  • ECC registered design protects data integrity
  • JEDEC and RoHS compliant for warranty-safe upgrades
  • Direct replacement for Hynix HMCG78MEBRA modules

Server RDIMM upgrade

This OWC DDR5 module provides 16GB of ECC Registered memory at 4800 MT/s with CL40 latency. It uses a 288-pin form factor and operates at 1.1V for compatible workstations and servers.

Target and exclusion

It suits administrators upgrading Hynix part numbers HMCG78MEBRA107N, HMCG78MEBRA113N, HMCG78MEBRA115N or HMCG78MEBRA174N. It is not for systems that only accept unbuffered ECC or non-ECC memory, nor for boards that cannot use registered DIMMs.

Deciding specification

The registered ECC design with 1Rx8 organisation determines whether the module will function in a given platform. Systems requiring load-reduced or unbuffered memory will not accept this part.

Points forts

  • 16 GB DDR5 4800 for server workloads
  • CL40 latency at 1.1 V for stable throughput
  • ECC registered design protects data integrity
  • JEDEC and RoHS compliant for warranty-safe upgrades
  • Direct replacement for Hynix HMCG78MEBRA modules

Caractéristiques

BrandOWC
Part Number4R8D51R816GB
Capacity16GB
Type288-Pin DDR5 ECC RDIMM
SpeedDDR5 4800 (PC5 38400)
CAS LatencyCL40
Voltage1.1V
ECCYes
Buffered/RegisteredRegistered
Rank1Rx8
Heat SpreaderNo

Questions sur cet article

Will this DDR5 4800 CL40 1.1V ECC Registered RDIMM work alongside my existing DDR5 4800 registered modules?

It will operate with other DDR5 4800 registered ECC DIMMs of the same voltage and rank configuration, but mixing different manufacturers or capacities can prevent the system from training at the rated speed.

How can I verify the module is running at DDR5 4800 with ECC active after installation?

Check the BIOS memory information or use a tool such as dmidecode or CPU-Z to confirm the speed reads 4800 MT/s, the CAS latency shows CL40 and the ECC status reports as enabled.

Does the box contain only the 16GB RDIMM or are any cables or brackets included?

Only the 16GB 288-pin DDR5 ECC Registered RDIMM is supplied; no cables, brackets or additional hardware are included.

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