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

SAMSUNG

SAMSUNG M321R4GA0PB0-CWM 32GB DDR5-5600 1Rx4 EC8 RDIMM server RAM

SKU CH-4KGR-20S8C MPN M321R4GA0PB0-CWM

32 GB DDR5-5600 registered ECC RDIMM with 1Rx4 organisation, CL46 latency and 1.1 V operation

  • Total capacity32 GB
  • Rated speedDDR5 5600 (PC5 44800)
  • ChipsetSamsung Chipset
  • CAS latencyCL46
  • Buffer typeRegistered
  • Memory rank1Rx4
  • 32GB DDR5-5600 capacity supports demanding server workloads
  • ECC registered design protects data integrity in critical applications
  • Single-rank 1Rx4 architecture enables efficient memory-channel utilisation
  • 1V operating voltage reduces power draw per module
  • 288-pin RDIMM form factor fits standard DDR5 server slots

32GB DDR5-5600 EC8 RDIMM for servers

This single 32GB module uses DDR5-5600 with CL46 latency and operates at 1.1V. It is a registered ECC RDIMM built for 288-pin server platforms that require error correction and registered buffering.

Upgrade from lower-capacity DDR5 RDIMMs

Replacing smaller registered modules with this 32GB stick increases density per slot while keeping the DDR5-5600 speed and EC8 organisation. The jump is worthwhile when the motherboard supports 1Rx4 registered DIMMs and the workload needs more capacity per channel without dropping to a slower speed bin.

Handles typical server workloads within one DIMM

The 32GB capacity covers common virtualisation, database and compute tasks that fit in a single registered module. Workloads that exceed 32GB per channel or require dual-rank density for specific memory-controller optimisations will need additional modules or higher-capacity RDIMMs.

How it compares

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

Price $1,814.99
Pricier than about 85% 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 $56.72 per GB
Pricier than about 90% of the 6,064 comparable items (median $7.25 per GB).

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Specifications

Product
Brand nameSAMSUNG
Product lineM321R4GA0PB0-CWM
Model nameM321R4GA0PB0-CWM
Part numberM321R4GA0PB0-CWM
Total capacity32 GB
Product type288-Pin DDR5 RDIMM
Performance
Rated speedDDR5 5600 (PC5 44800)
Processor
ChipsetSamsung Chipset
Memory
CAS latencyCL46
ECC supportYes
Buffer typeRegistered
Memory rank1Rx4
Heat spreaderNo
Size & build
Shipping weight0.23 kg
Package size152 × 51 × 25 mm

Questions about this item

Will the 288-pin DDR5 RDIMM fit a standard server DIMM slot?

Yes, the module uses the 288-pin DDR5 RDIMM form factor that matches standard server memory slots.

What is the correct orientation step when seating this RDIMM?

Align the single key notch with the slot ridge, press firmly until both ejector clips click shut.

When should the 32GB EC8 RDIMM be replaced?

Replace the module if ECC logs show uncorrectable errors or the server fails memory diagnostics.

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