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Green circuit board with black memory chips, 288 gold pins, no heat spreader

A-Tech

A-Tech 128GB DDR4 2666 ECC LRDIMM 2S4Rx4 288-Pin server RAM

SKU CH-KD7N-0K3FW

128 GB DDR4-2666 ECC LRDIMM module with 2S4Rx4 octal-rank 3DS/TSV organisation, CL19 latency and 1.2 V operation for server and workstation platforms

  • Total capacity128 GB
  • Rated speedDDR4 2666 (PC4 21300)
  • ChipsetMajor Brand Chipset
  • CAS latencyCL19
  • Rated voltage1.2 V
  • Buffer typeLoad Reduced

Capacity 128GB

  • 128 GB capacity in a single module for maximum density
  • DDR4-2666 speed with CL19 latency for responsive server workloads
  • ECC Load Reduced DIMM corrects errors and reduces electrical load on the memory bus
  • 20 V standard DDR4 voltage keeps power draw in check
  • 288-pin 2S4Rx4 3DS/TSV octal-rank design fits compatible server and workstation slots

Server Memory for Demanding Workloads

This 128GB DDR4 LRDIMM module is built for servers and workstations that need high memory density and error correction. The Load Reduced design with 2S4Rx4 organisation and 3DS/TSV stacking lets a single 288-pin slot deliver octal-rank capacity. It is not compatible with desktop or laptop platforms.

Thermals and Power in Normal Use

Operating at 1.2V standard DDR4 voltage with CL19 latency, the module runs without a heat spreader. Power draw scales with the 2666 MHz data rate and the 128GB capacity in sustained server workloads. Acoustic output depends on chassis airflow rather than the module itself.

Build Integration and System Fit

The 288-pin DDR4 form factor requires a server or workstation motherboard qualified for LRDIMM memory and the 2S4Rx4 rank structure. ECC and Load Reduced buffering free the memory controller from electrical load, allowing higher total system capacity. Verify your platform's supported memory specifications before installation.

How it compares

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

Price $604.99
Pricier than about 73% of the 6,523 comparable items (median $188.99).
Total capacity 128 GB
Higher than about 90% of the 6,064 comparable items (median 32 GB).
Price per GB $4.73 per GB
Cheaper than about 75% of the 6,064 comparable items (median $7.25 per GB).

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Specifications

Product
Brand nameA-Tech
Product lineA-Tech DDR4 Server Memory RAM
Model nameA-Tech 128 GB 2S4Rx4 PC4-2666 V-L
Part numberNE-SS-0708
Total capacity128 GB
Product type288-Pin DDR4 SDRAM
Performance
Rated speedDDR4 2666 (PC4 21300)
Processor
ChipsetMajor Brand Chipset
Memory
CAS latencyCL19
ECC supportYes
Buffer typeLoad Reduced
Memory rank2S4Rx4 (8Rx4 3DS/TSV)
Heat spreaderNo
Power
Rated voltage1.2 V

Other versions of this model

5 more in the same range

Questions about this item

How do I install this 288-Pin DDR4 LRDIMM and what is the common mistake?

Align the notch on the 288-Pin DDR4 LRDIMM with the slot key, press firmly until both retention clips click, and verify the module is fully seated; the frequent error is stopping when resistance is first felt instead of pushing until the clips engage.

What maintenance or replacement will this 128GB ECC LRDIMM need over time?

The module has no heat spreader and no moving parts, so no routine maintenance is required; replacement is only necessary if a memory test reports uncorrectable ECC errors or the system fails to recognise the 128GB capacity.

What limit appears first when this CL19 2666 MHz LRDIMM runs sustained workloads?

The first bottleneck is the DDR4 2666 MT/s data rate at CL19 latency, which caps sustained memory bandwidth before the 1.2V power envelope or thermal limits become a constraint.

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