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Green rectangular DDR5 RDIMM module with gold edge connector and black memory chips

SAMSUNG

SAMSUNG M321R2GA3BB6-CQK 16 GB DDR5 RDIMM 288-pin

SKU CH-MC0J-GKP3H MPN M321R2GA3BB6-CQK

16 GB DDR5 registered ECC memory module with 288 pins running at 4800 MT/s

  • 16 GB DDR5 capacity supports demanding server workloads
  • Registered ECC design protects data integrity in critical applications
  • 288-pin RDIMM form factor fits standard server memory slots
  • PC5-38400 bus speed delivers 4800 MT/s transfer rates
  • Single 1RX8 module simplifies capacity planning and upgrades

Samsung 16 GB DDR5 RDIMM

This Samsung module provides 16 GB of DDR5 registered ECC memory in a single 288-pin RDIMM. It is built for servers and workstations that require error-correcting, registered memory for stable operation.

Registered ECC with 288-pin RDIMM form factor

The registered design places a register between the memory controller and the DRAM chips, reducing electrical load on the motherboard. The 288-pin RDIMM connector fits standard DDR5 server DIMM slots and the ECC feature detects and corrects single-bit errors during operation.

DDR5-4800 (PC5-38400) bus speed

The module runs at a 4800 MT/s data rate, labelled PC5-38400, which determines the maximum memory bandwidth available to the platform. Systems that do not support DDR5-4800 registered ECC RDIMMs cannot use this part.

How it compares

Measured against everything we stock in Cable Locks & Laptop Extras, at today’s prices. Recalculated every night.

Price $479.99
Pricier than about 90% of the 8,808 comparable items (median $16.99).

Specifications

No published specifications for this item yet.

Questions about this item

What speed does the DDR5-4800 interface cap at for this module?

The module runs at DDR5-4800 with a PC5-38400 bus speed, so the practical ceiling is 4800 MT/s.

Will the 288-pin RDIMM fit my server board's DIMM slots?

Yes, the 288-pin RDIMM form factor matches standard DDR5 server DIMM sockets that accept registered modules.

How do I seat the 1RX8 registered DIMM without bending pins?

Align the single notch with the slot key, press straight down until both side clips click, and verify the module sits evenly.

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