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Green 288-pin DDR5 server RDIMM module with black chips, no heat spreader

OWC

OWC 4R8D51R432GB 32GB DDR5 4800 CL40 ECC Registered RDIMM server RAM

SKU CH-DS6R-1BEFZ

32 GB DDR5 4800 ECC registered RDIMM for server and workstation upgrades

  • Total capacity32 GB
  • Rated speedDDR5 4800 (PC5 38400)
  • CAS latencyCL40
  • Rated voltage1.1 V
  • Buffer typeRegistered
  • Memory rank1Rx4
  • ECC registered design protects data integrity in server workloads
  • DDR5 4800 speed delivers 38400 MB/s bandwidth for demanding applications
  • 32 GB capacity expands memory headroom for virtualization and databases
  • JEDEC and ROHS compliant ensures warranty-safe OEM replacement
  • 1 V operation reduces power draw in always-on environments

OWC 32GB DDR5 4800 ECC RDIMM

This 32GB DDR5 4800 CL40 module is a registered ECC RDIMM built for servers and workstations. It runs at 1.1V with a 1Rx4 layout on a 288-pin interface and is designed as a direct replacement for specific Hynix part numbers. The module carries JEDEC and RoHS compliance for warranty-safe upgrades.

Replaces Hynix DDR5 4800 RDIMMs

It replaces Hynix modules HMCG84MEBQA107N, HMCG84MEBQA113N, HMCG84MEBQA115N, HMCG84MEBQA174N and HMCG84MEBRA107N. The jump is worth it when extending the life of existing DDR5 infrastructure or building new systems that require registered ECC memory at this speed and capacity. Mixing with unbuffered or load-reduced ECC is not supported.

Suits servers needing registered ECC

This module suits administrators upgrading compatible DDR5 servers or workstations that require registered ECC RDIMMs at 4800 MT/s. It is not for standard desktop computers, consumer laptops, or any system that only accepts unbuffered or load-reduced ECC memory. Buyers needing different capacities, speeds or form factors should look at other modules.

How it compares

Measured against everything we stock in ECC Server RAM, at today’s prices. Recalculated every night.

Price $766.99
Pricier than about 76% of the 6,523 comparable items (median $188.99).
Total capacity 32 GB
Typical for this category: the median of 6,064 items is 32 GB.
Price per GB $23.97 per GB
Pricier than about 85% of the 6,064 comparable items (median $7.25 per GB).

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Specifications

Product
Brand nameOWC
Part number4R8D51R432 GB
Total capacity32 GB
Product type288-Pin DDR5 ECC RDIMM
Performance
Rated speedDDR5 4800 (PC5 38400)
Memory
CAS latencyCL40
ECC supportYes
Buffer typeRegistered
Memory rank1Rx4
Heat spreaderNo
Power
Rated voltage1.1 V

Questions about this item

Will the 288-pin DDR5 RDIMM fit my server's standard DDR5 DIMM slots?

Yes, the module uses the standard 288-pin DDR5 RDIMM form factor designed for server and workstation DDR5 slots.

What is the correct way to seat this registered ECC module, and what step do installers often miss?

Align the off-centre notch with the slot key, press firmly until both retention clips click shut, and verify the motherboard detects the full 32 GB capacity at DDR5 4800.

Does the lack of a heat spreader mean I need active airflow over the DIMMs for long-term reliability?

The module runs at 1.1 V JEDEC standard voltage; adequate chassis airflow is recommended, but no extra cooling is required beyond normal server ventilation.

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