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Green printed circuit board with black memory chips and gold edge connectors

SAMSUNG

SAMSUNG M321R2GA3PB0-CWM 16GB DDR5-5600 RDIMM ECC Registered 1Rx8 1.1V server RAM

SKU CH-FSZG-FHZA7 MPN M321R2GA3PB0-CWM

16 GB DDR5-5600 registered ECC server memory module, CL46, 1.1 V, 288-pin, single-rank x8

  • Total capacity16 GB
  • Rated speedDDR5 5600 (PC5 44800)
  • ChipsetSamsung Chipset
  • CAS latencyCL46
  • Buffer typeRegistered
  • Memory rank1Rx8
  • 16 GB DDR5-5600 capacity for demanding server workloads
  • ECC registered design detects and corrects data errors
  • Single-rank 1Rx8 organisation optimises memory-channel efficiency
  • Low 1.1 V operation reduces power draw in dense configurations
  • 288-pin RDIMM form factor fits standard DDR5 server slots

16GB DDR5-5600 ECC RDIMM

This Samsung server memory module provides 16GB of DDR5-5600 registered ECC RAM. It operates at 1.1V with a CAS latency of CL46 and uses a 288-pin RDIMM form factor. The single-rank 1Rx8 design employs Samsung EC8 chips for enterprise stability.

Suited for DDR5 servers needing registered ECC

This module fits systems that require DDR5 RDIMMs with on-die ECC and register buffering. It is not for desktops or laptops that accept only unbuffered UDIMMs. Buyers who need higher capacities per slot or lower latency timings should look at alternative configurations.

Handles standard server workloads at 5600 MT/s

The 16GB capacity supports typical virtualization, database and compute tasks within a single DIMM slot. Headroom is limited when applications demand more memory per channel than a single rank provides. Workloads requiring larger per-module densities will exceed this module's capacity.

How it compares

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

Price $1,324.99
Pricier than about 82% of the 6,523 comparable items (median $188.99).
Total capacity 16 GB
Lower than about 60% of the 6,064 comparable items (median 32 GB).
Price per GB $82.81 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
Product lineM321R2GA3PB0-CWM
Model nameM321R2GA3PB0-CWM
Part numberM321R2GA3PB0-CWM
Total capacity16 GB
Product type288-Pin DDR5 RDIMM
Performance
Rated speedDDR5 5600 (PC5 44800)
Processor
ChipsetSamsung Chipset
Memory
CAS latencyCL46
ECC supportYes
Buffer typeRegistered
Memory rank1Rx8
Heat spreaderNo
Size & build
Shipping weight0.23 kg
Package size152 × 51 × 25 mm

Questions about this item

Does this 288-pin DDR5-5600 RDIMM require a motherboard with DDR5 RDIMM slots and registered-memory support?

Yes, the module is a 288-pin DDR5 RDIMM that runs at 5600 MT/s with CL46 latency and 1.1 V; the server platform must provide DDR5 RDIMM slots and support registered ECC memory.

Can I mix this single-rank 1Rx8 EC8 module with existing dual-rank registered DIMMs in the same server?

Mixing ranks is platform-dependent; this stick is a single-rank 1Rx8 EC8 registered DIMM, so the memory controller and BIOS must allow mixed-rank populations in the target channel configuration.

How can I confirm the module is running at the rated 5600 MT/s with ECC active after installation?

Check the BIOS memory information or an OS tool such as dmidecode; it should report DDR5-5600 (PC5-44800), CL46, 1.1 V, registered ECC and 1Rx8 organisation for the installed module.

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