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Green rectangular circuit board with gold edge contacts and black memory chips

SAMSUNG

SAMSUNG M321R4GA0BB0-CQK 32GB DDR5-4800 ECC RDIMM 1Rx4 1.1V server RAM

SKU CH-7X9B-9YVC7 MPN M321R4GA0BB0-CQK

A 32 GB DDR5-4800 ECC registered server module with 1Rx4 organisation, 1.1 V operation and 288-pin form factor

  • Total capacity32 GB
  • Rated speedDDR5 4800 (PC5 38400)
  • Buffer typeRegistered
  • Memory rank1Rx4
  • 32 GB capacity supports demanding server workloads
  • DDR5-4800 speed delivers high data throughput
  • ECC registered design protects data integrity
  • 1Rx4 organisation optimises memory density
  • 1 V operation reduces power consumption

32 GB DDR5-4800 ECC registered module

This Samsung RDIMM delivers 32 GB of DDR5-4800 memory with error-correcting code and registered buffering. It operates at 1.1 V and uses a 288-pin form factor with a 1Rx4 organisation. The module is built for server platforms that require registered ECC memory for data integrity and stability.

Fits DDR5 server slots that accept registered ECC

The 288-pin design installs directly into compatible DDR5 RDIMM sockets without adapters. Registered signalling reduces electrical load on the memory controller, freeing the platform to populate more slots per channel. ECC capability corrects single-bit errors on the fly, protecting critical workloads from silent data corruption.

Suited for administrators upgrading

Buyers who need registered ECC modules for multi-socket servers or high-capacity workstations will find the specification matches those requirements. Builders looking for unbuffered desktop DIMMs, non-ECC memory or lower-voltage variants should select a different module type.

How it compares

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

Price $1,426.99
Pricier than about 83% 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 $44.59 per GB
Pricier than about 90% 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 nameSAMSUNG
Model nameM321R4GA0BB0-CQK
Part numberM321R4GA0BB0-CQK
Total capacity32 GB
Performance
Rated speedDDR5 4800 (PC5 38400)
Memory
ECC supportYes
Buffer typeRegistered
Memory rank1Rx4
Size & build
Shipping weight0.02 kg
Package size152 × 51 × 13 mm

Questions about this item

When does the 1.1 V DDR5-4800 RDIMM hit a thermal limit during continuous server loads?

The module runs at 1.1 V and is built for sustained DDR5-4800 operation in registered ECC server configurations.

How much fan airflow does the 32 GB DDR5-4800 RDIMM need when it runs all day?

Standard server chassis airflow is sufficient; the 1.1 V DDR5-4800 RDIMM is designed for continuous operation in rack environments.

What motherboard slot and chipset support is required for this 288-pin DDR5-4800 RDIMM?

It requires a DDR5 RDIMM slot on a server platform that supports registered ECC memory at 4800 MT/s.

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