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Green 288-pin DDR5 RDIMM module, 32GB capacity, no heat spreader

OWC

OWC 32GB DDR5 4800 CL40 1Rx4 ECC Registered RDIMM for Samsung M321R4GA0BB0-CQK server RAM

SKU CH-BNKC-Y5PBT

32 GB DDR5 4800 ECC registered RDIMM for Samsung M321R4GA0BB0-CQK servers

  • Total capacity32 GB
  • Rated speedDDR5 4800 (PC5 38400)
  • CAS latencyCL40
  • Rated voltage1.1 V
  • Buffer typeRegistered
  • Memory rank1Rx4
  • 32 GB DDR5 4800 boosts server throughput
  • CL40 latency and 1.1 V voltage cut power draw
  • ECC registered design guards data integrity under load
  • 1Rx4 288-pin layout fits Samsung M321R4GA0BB0-CQK slots
  • JEDEC and RoHS compliant for warranty-safe upgrades

32GB DDR5 4800 ECC Registered RDIMM

This 32GB DDR5 4800 CL40 module is a registered ECC RDIMM built for servers and workstations. It runs at PC5-38400 speed with 1.1V voltage and a 1Rx4 rank layout. The 288-pin design matches the Samsung M321R4GA0BB0-CQK part number for direct replacement.

Verify registered ECC support and voltage

Your motherboard must accept DDR5 registered ECC RDIMMs; standard desktop boards cannot use this memory. Confirm the system requires 1.1V operation and CL40 timing at 4800 MT/s. Do not mix this module with unbuffered or load-reduced DIMMs, as the registered buffer changes electrical signalling.

Suits server upgrades and Samsung replacements

Ideal for administrators extending the life of compatible Samsung-equipped servers or building new JEDEC-compliant nodes. Not for desktop PCs, laptops, or consumer motherboards that lack registered ECC support. Buyers who need unbuffered ECC or non-ECC memory 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 $756.99
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 $23.66 per GB
Pricier than about 85% of the 6,064 comparable items (median $7.25 per GB).

New to this? Buying memory and SSDs with crypto — what to check, what it costs to pay, and what is never asked for.

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

Does the 288-pin DDR5 ECC Registered RDIMM arrive as a single 32GB module or do I need to purchase additional sticks?

The module is a single 32GB stick; order one per slot you plan to populate.

Should I choose the CL40 4800 version or a different latency for my Samsung M321R4GA0BB0-CQK replacement?

Match the original CL40 4800 spec; mixing latencies can prevent the server from posting.

What does the 4800 PC5-38400 rating deliver once the RDIMM is installed in a compatible server?

It runs at 4800 MT/s with ECC error correction and registered buffering for stable multi-rank operation.

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