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Green rectangular DDR5 RDIMM module with black chips and gold contacts, no heat spreader

OWC

OWC 4R8D52R832GB 32GB DDR5 4800 CL40 ECC Registered RDIMM server RAM

SKU CH-2MQS-SFY9V

32 GB DDR5 4800 CL40 ECC registered 2Rx8 RDIMM replacement for Hynix HMCG88MEBRA107N HMCG88MEBRA113N HMCG88MEBRA115N HMCG88MEBRA174N

  • Total capacity32 GB
  • Rated speedDDR5 4800 (PC5 38400)
  • CAS latencyCL40
  • Rated voltage1.1 V
  • Buffer typeRegistered
  • Memory rank2Rx8
  • 32GB capacity lets servers handle larger workloads
  • DDR5 4800 speed delivers high bandwidth for data-intensive tasks
  • ECC registered design corrects errors to protect critical data
  • 2Rx8 dual-rank layout increases memory density per slot
  • 1V operation reduces power draw in dense configurations

Server DDR5 ECC RDIMM upgrade

This OWC module is a 32GB DDR5 4800 registered DIMM built for workstations and servers. It carries ECC protection and a 2Rx8 rank layout on a 288-pin form factor. The module runs at 1.1V and conforms to JEDEC PC5-38400 timings with CL40 latency. It is sold new as a direct replacement for specific Hynix part numbers.

Registered ECC DDR5 4800 compatibility

The single specification that decides fit is the registered ECC DDR5 4800 standard with 2Rx8 organisation. Standard desktop motherboards cannot use registered memory and will not post with this module installed. Mixing it with unbuffered or load-reduced DIMMs is also unsupported. Buyers must confirm their platform requires registered ECC DDR5 before purchasing.

For server and workstation maintainers

This module suits administrators extending the life of qualified DDR5 server platforms or building new systems that specify registered ECC memory. It is not for desktop PC builders, laptop upgraders or anyone whose hardware calls for unbuffered or load-reduced DIMMs. Buyers needing a different capacity, speed or rank configuration 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 $833.99
Pricier than about 78% 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 $26.06 per GB
Pricier than about 87% of the 6,064 comparable items (median $7.25 per GB).

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Specifications

Product
Brand nameOWC
Part number4R8D52R832 GB
Total capacity32 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

Questions about this item

How does the CL40 latency affect real-world server performance?

CL40 sets the delay before data leaves the module; lower latency improves response time for transactional workloads, but overall throughput is also shaped by the memory controller and channel population.

What does the PC5 38400 rating tell me about peak bandwidth?

PC5 38400 is the JEDEC designation for DDR5 4800 modules; it identifies the speed grade rather than guaranteeing a specific transfer ceiling in every system.

Will this 288-pin RDIMM fit my server's DIMM slots?

The module uses the standard 288-pin DDR5 RDIMM form factor; it installs in any server board that accepts registered ECC DDR5 DIMMs and clears the 1.1 V requirement.

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