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Green printed circuit board with black memory chips and gold edge contacts, 288-pin DDR4 RDIMM module

A-Tech

A-Tech 32GB DDR4 2133 ECC RDIMM 2Rx4 Server Memory

SKU CH-SANJ-F3WNN

32 GB DDR4 2133 MHz ECC registered DIMM with Samsung chipset, CL15 latency and 1.2 V operation

  • Total capacity32 GB
  • Rated speedDDR4 2133 (PC4 17000)
  • ChipsetSamsung Chipset
  • CAS latencyCL15
  • Rated voltage1.2 V
  • Buffer typeRegistered
  • 32GB capacity expands server memory for heavier workloads
  • DDR4 2133 speed delivers PC4-17000 bandwidth for data-intensive tasks
  • ECC registered design detects and corrects errors to protect data integrity
  • 2Rx4 organisation with Samsung chipset ensures stable signal quality
  • 20V operation at CL15 latency reduces power draw per module

Server Memory Upgrade

This A-Tech module provides 32GB of DDR4 2133 ECC registered memory for servers and workstations. It replaces Samsung M393A4K40BB0-CPB0Q and M393A4K40BB0-CPB4Q parts with a compatible 2Rx4 design. The single stick adds capacity to systems that require registered DIMMs with error correction.

Build Integration

The 288-pin DIMM operates at the standard 1.20V DDR4 voltage and carries a CL15 latency rating. It fits DDR4 RDIMM slots in compatible server or workstation motherboards. The registered buffer reduces electrical load on the memory controller, freeing headroom for larger memory populations.

Upgrade Context

This module upgrades systems running lower-capacity or non-ECC DDR4 memory where data integrity and registered signalling are required. The jump is worth it when workloads demand 32GB per slot with error correction and the platform supports DDR4 2133 registered DIMMs.

How it compares

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

Price $110.99
Cheaper than about 65% 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 $3.47 per GB
Cheaper than about 86% 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 nameA-Tech
Product lineCompatible Replacement for Samsung
Model nameM393A4K40BB0-CPB0Q, M393A4K40BB0-CPB4Q
Total capacity32 GB
Performance
Rated speedDDR4 2133 (PC4 17000)
Processor
ChipsetSamsung Chipset
Memory
CAS latencyCL15
ECC supportYes
Buffer typeRegistered
Memory rank2Rx4
Power
Rated voltage1.2 V

Questions about this item

What is the registered CAS latency limit that appears first under sustained server workloads?

The module operates at CL15 latency, which is the timing ceiling the memory controller hits continuously during long-running tasks.

How much heat and power does a registered 32 GB DDR4 module draw at 1.2 V?

At the standard 1.20 V DDR4 voltage the DIMM runs within normal server thermal envelopes; registered buffering adds negligible extra heat.

Which DDR4 DIMM slot keying does this 288-pin RDIMM require?

It fits a standard 288-pin DDR4 registered DIMM slot; the board must support ECC RDIMM 2Rx4 modules at 2133 MHz.

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