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Green rectangular DDR5 memory module with gold contacts and black chips on both sides

OWC

OWC 32GB DDR5 4800 CL40 2Rx8 ECC Registered RDIMM 288-pin 1.1V Server Memory

SKU CH-CFJA-8D4QR

32 GB DDR5 4800 CL40 ECC Registered RDIMM replacement for Kingston KSM48R40BD8KMM-32HMR

  • Total capacity32 GB
  • Rated speedDDR5 4800 (PC5 38400)
  • CAS latencyCL40
  • Rated voltage1.1 V
  • Buffer typeRegistered
  • Memory rank2Rx8
  • 32 GB capacity lets you run more virtual machines simultaneously
  • DDR5 4800 speed delivers 38 400 MB/s peak bandwidth for data-intensive workloads
  • ECC registered design detects and corrects single-bit errors to protect data integrity
  • 1 V operation reduces power draw and heat in dense server configurations
  • JEDEC-standard 288-pin RDIMM ensures drop-in compatibility with qualified platforms

32GB DDR5 4800 ECC Registered RDIMM

This 32GB DDR5 module runs at 4800 MT/s with CL40 latency and 1.1V operation. It is built as a 2Rx8 registered DIMM with on-die ECC for error correction. The part targets servers and workstations that require registered memory and cannot use unbuffered or load-reduced types.

288-pin installation and mixing rules

The module fits standard 288-pin DDR5 slots and requires no tools beyond normal DIMM insertion. The main risk is mixing this registered ECC stick with unbuffered or load-reduced memory, which the manufacturer states will not work. All installed DIMMs should match in capacity, speed and vendor for stable operation.

For JEDEC-compliant server fleets

This upgrade suits administrators extending the life of existing DDR5-4800 platforms or building new JEDEC-compliant nodes. It is not for desktop PCs that accept only unbuffered memory, nor for systems that require load-reduced DIMMs or speeds beyond 4800 MT/s.

How it compares

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

Price $741.99
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 $23.19 per GB
Pricier than about 84% 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 can I confirm the DDR5 4800 module is running at the correct speed and latency after installation?

Enter the system BIOS or UEFI and verify the memory frequency shows 4800 MT/s with CAS latency 40.

What is included with the 32 GB RDIMM and what must be purchased separately?

The box contains the single 288-pin ECC Registered DIMM. No cables, brackets or additional modules are supplied.

Which capacity and rank configuration should I select for a server that requires 2Rx8 registered ECC memory?

Choose this 32 GB 2Rx8 module; it matches the registered ECC RDIMM specification and cannot be mixed with unbuffered or load-reduced DIMMs.

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