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Green 288-pin DDR4 RDIMM module with black Samsung chips

A-Tech

A-Tech Supermicro Certified 16GB DDR4 2666 ECC RDIMM 1Rx4

SKU CH-D8JS-G0TDK

16 GB DDR4 2666 ECC registered server memory with Samsung chips, CL19 latency and 1.2 V operation

  • Total capacity16 GB
  • Rated speedDDR4 2666 (PC4 21300)
  • ChipsetSamsung Chipset
  • CAS latencyCL19
  • Rated voltage1.2 V
  • Buffer typeRegistered
  • Supermicro certified for guaranteed server compatibility
  • 16 GB DDR4 2666 MHz CL19 expands memory capacity
  • Samsung 1Rx4 chipset ensures stable registered operation
  • 20 V standard voltage keeps power draw low
  • Rigorously tested with lifetime warranty and US support

Supermicro Certified DDR4 RDIMM

This 16 GB registered ECC module is built for Supermicro servers and workstations that require validated memory. It runs at DDR4 2666 with a CAS latency of 19 at the standard 1.20 V. The Samsung 1Rx4 chipset and 288-pin RDIMM form factor ensure signal integrity in multi-DIMM configurations.

Upgrade from unbuffered or lower-capacity DIMMs

Replacing non-ECC or single-rank unregistered sticks adds error correction and registered buffering, which become essential once a platform populates four or more slots per channel. The jump is worth it when workloads demand data integrity and the motherboard Qualified Vendor List includes the MEM-DR416L-SL04-ER26 part number.

16 GB single-rank capacity headroom

One module delivers 16 GB at PC4-21300 bandwidth, leaving additional DIMM slots free for future expansion up to the platform limit. It comfortably handles virtualization hosts, database buffers, and compile farms that fit within the installed capacity. Systems needing more than the available slot count can support will require higher-density modules.

How it compares

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

Price $120.99
Cheaper than about 61% 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 $7.56 per GB
Typical for this category: the median of 6,064 items is $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-DR416L-SL04-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

Does this module fit a standard 288-pin DDR4 RDIMM slot?

Yes, it uses the 288-pin RDIMM form factor and requires a DDR4 2666 MHz registered ECC slot on a compatible server or workstation motherboard.

What is the correct way to seat this registered ECC module, and what step do installers often miss?

Align the notch with the key, press firmly until both retention clips click, and verify the BIOS detects the full 16 GB at 2666 MHz — installers often forget to enable ECC in the firmware.

When should this 1.2 V Samsung-based RDIMM be replaced?

Replace it if memory diagnostics report uncorrectable ECC errors, the system fails to POST with the module installed, or a firmware update lists the M393A2K40CB2-CTD as incompatible.

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