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Green rectangular DDR4 DIMM with black chips and gold contacts

A-Tech

A-Tech 16GB DDR4 3200 ECC RDIMM 2Rx8 HMAG78EXNRA

SKU CH-VN1T-FXZDC

A 16 GB DDR4 3200 ECC registered DIMM with CL22 latency and 1.2 V operation for server and workstation upgrades

  • Total capacity16 GB
  • Rated speedDDR4 3200 (PC4 25600)
  • ChipsetMajor Brand Chipset
  • CAS latencyCL22
  • Rated voltage1.2 V
  • Buffer typeRegistered
  • 16 GB DDR4 3200 MHz ECC RDIMM for server workloads
  • CL22 latency at 1.20 V for stable operation
  • 2Rx8 dual-rank organisation increases memory density
  • Registered design reduces electrical load on the memory bus
  • 288-pin DIMM form factor fits standard DDR4 server slots

16GB DDR4 3200 ECC RDIMM for servers

This 16GB DDR4 3200 ECC RDIMM module is built for server and workstation systems that require registered memory with error correction. The 2Rx8 organisation and CL22 latency at 1.20V match the Hynix HMAG78EXNRA specification. It is a direct replacement part for that model.

Upgrade from non-ECC or slower DDR4

The module replaces non-ECC UDIMMs or slower DDR4 RDIMMs in platforms that support registered ECC memory. The jump is worth it when your workload demands data integrity and the motherboard accepts 288-pin RDIMMs at 3200 MT/s. Systems limited to UDIMM slots or lower speeds cannot use this module.

Check motherboard RDIMM support and slot count

Verify that your motherboard or server chassis lists DDR4 3200 RDIMM support and has an available 288-pin DIMM slot. Confirm the maximum capacity per slot and the total number of slots populated, as some platforms restrict rank count or total memory. The 262-pin form factor noted in the supplier data refers to SO-DIMM; this product is a 288-pin RDIMM.

How it compares

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

Price $139.99
Cheaper than about 58% 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 $8.75 per GB
Pricier than about 62% of the 6,064 comparable items (median $7.25 per GB).

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Specifications

Product
Brand nameA-Tech
Product lineCompatible Replacement for Hynix
Model nameHMAG78EXNRA
Total capacity16 GB
Performance
Rated speedDDR4 3200 (PC4 25600)
Processor
ChipsetMajor Brand Chipset
Memory
CAS latencyCL22
ECC supportYes
Buffer typeRegistered
Memory rank2Rx8
Power
Rated voltage1.2 V

Questions about this item

Will this 288-pin DDR4 3200 ECC RDIMM fit my server's DIMM slots?

The module uses the standard 288-pin DDR4 DIMM form factor and requires a slot that accepts registered ECC memory at 1.2 V.

What is the correct way to seat this 16 GB 2Rx8 RDIMM and what step is often missed?

Align the notch with the key, press firmly until both retention clips click, and verify the system recognises the full 16 GB at 3200 MHz.

How can I tell when this ECC RDIMM should be replaced?

Replace the module if the system logs corrected ECC errors that increase over time, or if memory diagnostics report uncorrectable failures.

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