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Green printed circuit board with black memory chips and gold edge connectors

A-Tech

A-Tech Supermicro Certified 16GB DDR4 2666MHz CL19 1Rx4 ECC Registered RDIMM 288-Pin Server RAM

SKU CH-A8QN-D9VSW

16 GB DDR4 2666 MHz CL19 ECC registered RDIMM with Samsung chips, Supermicro certified for server reliability

  • Total capacity16 GB
  • Rated speedDDR4 2666 (PC4 21300)
  • ChipsetSamsung Chipset
  • CAS latencyCL19
  • Rated voltage1.2 V
  • Buffer typeRegistered
  • Supermicro certified for guaranteed server compatibility
  • Samsung chipset delivers reliable DDR4 2666MHz performance
  • ECC registered design protects data integrity
  • 16GB single-rank module at 1.2V standard voltage
  • 288-pin RDIMM fits standard server memory slots

A-Tech 16GB DDR4 2666MHz ECC RDIMM

This A-Tech module is a 16GB DDR4 2666MHz CL19 registered DIMM built on Samsung chips and certified for Supermicro platforms. It operates at 1.20V and uses a 1Rx4 single-rank layout across 288 pins. The part number MEM-DR416LA-ER26 matches the Samsung M393A2K40BB2-CTD specification.

Suited for Supermicro DDR4 servers needing ECC

It fits systems that require registered ECC RDIMMs at the PC4-21300 speed grade. Builders using unbuffered UDIMM slots, desktop chipsets, or platforms limited to lower voltages should look elsewhere. The single 16GB stick also leaves fewer slots free than a multi-module kit would.

16GB capacity for virtualisation

The module handles typical hypervisor hosts, file servers, and mid-range database workloads that fit within a single DIMM per channel. Workloads demanding higher per-channel density or speeds beyond 2666MHz will exhaust headroom and require faster or larger modules.

How it compares

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

Price $126.99
Cheaper than about 60% 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 $7.94 per GB
Pricier than about 56% 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 nameSuperMicro
Product lineSupermicro Certified
Model nameMEM-DR416LA-ER26
Total capacity16 GB
Performance
Rated speedDDR4 2666 (PC4 21300)
Processor
ChipsetSamsung Chipset
Memory
CAS latencyCL19
ECC supportYes
Buffer typeRegistered
Memory rank1Rx4
Power
Rated voltage1.2 V

Questions about this item

What server motherboard slot and memory type are required for this 288-pin DDR4 RDIMM?

The module fits a standard 288-pin DDR4 RDIMM slot on a server or workstation motherboard that supports registered ECC memory.

Can this single-rank 1Rx4 registered ECC module be mixed with dual-rank or unbuffered DIMMs in the same system?

Mixing ranks or buffer types is not recommended; the motherboard manual should confirm supported population rules for registered ECC RDIMMs.

How can I verify the module is running at 2666 MHz with CL19 timings after installation?

Check the BIOS memory information screen or use a system utility such as CPU-Z to confirm the reported speed of 2666 MHz and CAS latency of 19.

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