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Green rectangular DDR4 memory module with black chips and gold edge connector

SAMSUNG

SAMSUNG M393A2K40BB1-CRC 16GB DDR4 2400 ECC Registered CL17 1Rx4 server RAM

SKU CH-0FFD-WQ84F MPN M393A2K40BB1-CRC

16 GB DDR4 2400 ECC registered server memory with CL17 latency and 1Rx4 rank

  • Total capacity16 GB
  • Rated speedDDR4 2400 (PC4 19200)
  • ChipsetMajor Brand Chipset
  • CAS latencyCL17
  • Rated voltage1.2 V
  • Buffer typeRegistered
  • ECC registered design protects data integrity in critical workloads
  • 16 GB capacity expands server memory for demanding applications
  • DDR4 2400 speed delivers 19200 MB/s bandwidth for responsive performance
  • CL17 latency reduces access delays for faster task execution
  • 20 V operation lowers power consumption and thermal load

16GB DDR4-2400 ECC Registered Module

This 16GB DDR4 module runs at 2400 MT/s with CL17 latency and 1.20V operation. It uses a 288-pin RDIMM form factor with a 1Rx4 rank layout and on-die ECC for data integrity. The registered buffer reduces electrical load on the memory controller in multi-module configurations.

Suited for multi-slot server boards needing

The registered design and ECC support make it appropriate for platforms that require buffered modules for stability across populated channels. Builders using consumer desktop boards or laptops that accept only unbuffered non-ECC UDIMMs cannot use this module.

Fits 288-pin DDR4 RDIMM slots on compatible server

Installation requires a motherboard with registered DDR4 DIMM slots and a CPU or chipset that supports ECC and registered memory. The single-rank organisation leaves additional ranks available per channel where the platform allows, helping maximise total capacity within the system's slot count.

How it compares

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

Price $92.99
Cheaper than about 71% 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 $5.81 per GB
Cheaper than about 66% of the 6,064 comparable items (median $7.25 per GB).

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Specifications

Product
Brand nameSAMSUNG
Model nameM393A2K40BB1-CRC
Total capacity16 GB
Product type288-Pin DDR4 SDRAM
Performance
Rated speedDDR4 2400 (PC4 19200)
Processor
ChipsetMajor Brand Chipset
Memory
CAS latencyCL17
ECC supportYes
Buffer typeRegistered
Memory rank1Rx4
Power
Rated voltage1.2 V
Size & build
Shipping weight0.45 kg
Package size152 × 102 × 51 mm

Questions about this item

Does this 288-pin DDR4 module require a motherboard that supports registered ECC memory?

Yes, the module is registered with ECC and needs a server-class board that enables both features for the 16 GB stick to function correctly.

Can I mix this CL17 2400 MT/s stick with slower DDR4 modules already in my system?

The memory controller will run all installed modules at the speed and latency of the slowest one, so adding this PC4-19200 module to slower DDR4 will down-clock the new stick.

How can I verify the module is running at DDR4 2400 with CL17 after installation?

Check the BIOS memory information screen or a utility such as CPU-Z; it should report 2400 MT/s, CAS 17 and 1.20 V for this 1Rx4 registered DIMM.

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