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

SAMSUNG

SAMSUNG M321RAJA0MB2-CCP 128GB DDR5 6400MHz RDIMM 288-pin ECC 1.1V server RAM

SKU CH-XS1V-MQY95 MPN M321RAJA0MB2-CCP

High-capacity 128GB DDR5 server memory module running at 6400MHz with ECC error correction and 1.1V operation

  • 128 GB DDR5 capacity handles heavy server workloads
  • 6400 MHz speed delivers high-throughput data processing
  • ECC protection detects and corrects memory errors
  • 1 V operation reduces power draw per module
  • RDIMM 288-pin form factor fits standard server slots

128 GB DDR5 RDIMM for servers

This module delivers 128 GB of DDR5 memory in a registered 288-pin RDIMM form factor. It operates at 6400 MHz with ECC data integrity checking and a 1.1 V supply voltage. The design targets enterprise servers and workstations that require high-capacity, error-correcting memory.

Verify DDR5 RDIMM slot support and voltage

Confirm that your motherboard provides DDR5 RDIMM slots and accepts registered modules at 1.1 V. The platform must also support ECC functionality and the 6400 MHz data rate. Check the vendor qualification list before installation to ensure compatibility.

Sustained throughput with ECC overhead

Under continuous load the module maintains its rated 6400 MHz speed while ECC corrects single-bit errors in real time. The registered buffer reduces electrical loading on the memory controller during prolonged operation. Thermal performance depends on system airflow and chassis design.

How it compares

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

Price $7,024.99
Pricier than about 91% of the 6,523 comparable items (median $188.99).

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

Specifications

Size & build
Shipping weight0.45 kg
Package size178 × 102 × 51 mm

Questions about this item

Does the 288-pin RDIMM module ship alone or with extra components?

The product is a single 128GB DDR5 RDIMM; no additional parts are included.

When would I pick this 128GB 6400MHz ECC stick over a smaller capacity?

Choose it when your server board supports 128GB per slot and you need maximum density at 6400MHz with ECC.

What does the 6400MHz rating deliver once installed in a server?

It provides 6400MT/s data rate at 1.1V with ECC protection for registered DIMM platforms.

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