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Green rectangular DIMM module with black chips and gold contacts

Hynix

Hynix HMA42GR7AFR4N-TF 16GB DDR4 ECC Registered DIMM

SKU CH-ADKA-X7FYQ

Adds 16 GB of DDR4 ECC registered memory at 2133 MHz with CL15 latency

  • ECC protection prevents data corruption in critical workloads
  • Registered signal processing improves stability on heavily populated memory buses
  • 20 V operation reduces power draw versus older DDR standards
  • 2133 MHz CL15 timing delivers responsive throughput for server tasks
  • 288-pin DIMM fits standard DDR4 slots in compatible systems

Server-grade memory upgrade

This Hynix module adds 16 GB of DDR4 capacity to compatible servers and workstations. It operates at 2133 MHz with a CAS latency of 15 and runs at 1.20 V. The registered design and ECC support help maintain data integrity in multi-socket environments.

Thermals and power profile

The single 288-pin DIMM draws 1.20 V at standard DDR4 voltage, keeping power draw modest in normal operation. Registered signal processing reduces electrical load on the memory controller. No active cooling is required on the module itself.

Replaces non-ECC or lower-capacity DIMMs

The jump is worth it when moving from unbuffered memory that lacks error correction or from smaller registered sticks that limit total system capacity. Buyers who need higher frequencies or lower latencies than CL15 should look elsewhere.

How it compares

Measured against everything we stock in Switch Modules, Transceivers & Add-Ons, at today’s prices. Recalculated every night.

Price $63.99
Typical for this category: the median of 1,517 items is $68.99.

Specifications

Product
Brand nameSK Hynix

Questions about this item

How do I install the 288-pin DDR4 DIMM and what step is often missed?

Align the notch with the slot key, press firmly until both retention clips click, then verify the module sits flush; the step often missed is fully seating both ends so the clips lock automatically.

What maintenance or replacement will the 16GB ECC registered module need later?

No routine maintenance is required; replacement is only needed if a memory error occurs or a capacity upgrade is desired.

What limit appears first during sustained use of the CL15 1.20 V memory?

The thermal limit of the DDR4 chips is reached before any electrical limit, so adequate case airflow is the practical constraint.

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