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Green bare DDR5 RDIMM module with gold contacts and black memory chips

OWC

OWC 64GB DDR5 4800 CL40 2Rx4 ECC Registered RDIMM 288-pin 1.1V server RAM

SKU CH-BHC2-BVCJ1

64 GB DDR5 4800 CL40 ECC registered RDIMM for server and workstation upgrades

  • Total capacity64 GB
  • Rated speedDDR5 4800 (PC5 38400)
  • CAS latencyCL40
  • Rated voltage1.1 V
  • Buffer typeRegistered
  • Memory rank2Rx4
  • ECC registered design protects data integrity in servers
  • 64GB capacity expands memory for demanding workloads
  • DDR5 4800 speed delivers high bandwidth performance
  • JEDEC standard compliance ensures broad server compatibility
  • 1V operation reduces power draw per module

Server-grade 64GB DDR5 RDIMM

This OWC module delivers 64GB of DDR5 4800 memory in a 288-pin registered DIMM. It operates at 1.1V with CL40 latency and 2Rx4 organisation. ECC and registered buffering make it suitable for workstation and server platforms that require error correction and signal integrity.

Replaces Hynix DDR5 4800 RDIMMs

The module is a direct replacement for Hynix part numbers HMCG94AEBRA, HMCG94MEBQA109N, HMCG94MEBQA112N, HMCG94MEBQA121N and HMCG94MEBQA123N. The upgrade is worth it when a system needs JEDEC-standard registered ECC memory and the existing slots support DDR5 4800 RDIMMs.

For servers and workstations needing registered ECC

This memory suits administrators upgrading or repairing DDR5 4800 registered ECC platforms. It is not for standard desktop computers, which cannot use registered DIMMs. Buyers who need unbuffered or load-reduced ECC modules should look at a different product type.

How it compares

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

Price $1,410.99
Pricier than about 83% of the 6,523 comparable items (median $188.99).
Total capacity 64 GB
Higher than about 70% of the 6,064 comparable items (median 32 GB).
Price per GB $22.05 per GB
Pricier than about 83% of the 6,064 comparable items (median $7.25 per GB).

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Specifications

Product
Brand nameOWC
Part number4R8D52R464 GB
Total capacity64 GB
Product type288-Pin DDR5 ECC RDIMM
Performance
Rated speedDDR5 4800 (PC5 38400)
Memory
CAS latencyCL40
ECC supportYes
Buffer typeRegistered
Memory rank2Rx4
Heat spreaderNo
Power
Rated voltage1.1 V

Questions about this item

Will this 288-pin DDR5 4800 CL40 RDIMM fit my server's DIMM slots?

The module uses the standard 288-pin DDR5 form factor and 1.1 V operation; it fits any server or workstation slot that accepts registered ECC RDIMMs at DDR5 4800 speed.

What is the correct installation step for this registered ECC DDR5 module?

Power down the system, open the chassis, align the module notch with the slot key, press firmly until both retention clips click, then verify in BIOS that ECC registered mode is active.

How do I know when this 64 GB 2Rx4 DDR5 module needs replacement?

Run periodic memory diagnostics; replace the module if correctable ECC error counts rise sharply or if the system logs uncorrectable memory errors.

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