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Four green DDR4 server memory modules with black chips and gold contacts

A-Tech

A-Tech 1TB (4x256GB) DDR4 3200 ECC LRDIMM 2S4Rx4 Server RAM

SKU CH-3N3E-5CQNP

Quad-channel kit of four 256 GB DDR4 3200 ECC load-reduced DIMMs for server and workstation upgrades

  • Total capacity1 TB (4 × 256 GB)
  • Rated speedDDR4 3200 (PC4 25600)
  • ChipsetMajor Brand Chipset
  • CAS latencyCL22
  • Rated voltage1.2 V
  • Buffer typeLoad Reduced

Capacity 1TB (4 x 256GB)

  • Massive 1 TB capacity across four 256 GB modules
  • DDR4 3200 MHz speed accelerates data-intensive workloads
  • ECC Load Reduced DIMM corrects errors and reduces electrical load
  • Octal-rank 3DS/TSV architecture fits high-density server slots
  • Standard 1.20 V DDR4 voltage for efficient power draw

Server Memory Kit

This 1 TB quad-channel kit contains four 256 GB DDR4 ECC LRDIMM modules built for servers and workstations that require registered load-reduced memory. It is not compatible with desktop or laptop computers.

Thermals and Power

Modules operate at the standard DDR4 voltage of 1.20 V and have no heat spreaders. The load-reduced buffer reduces electrical load on the memory controller, helping to keep power draw and thermals within normal server limits during sustained workloads.

Rank and Pinout

Each module uses a 288-pin DIMM form factor with 2S4Rx4 octal-rank x4 3DS/TSV organisation. The system memory controller must support this specific rank structure and LRDIMM protocol for the kit to function.

How it compares

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

Price $8,623.99
Pricier than about 91% of the 6,523 comparable items (median $188.99).
Total capacity 1 TB (4 × 256 GB)
Higher than about 92% of the 6,064 comparable items (median 32 GB).
Price per GB $8.62 per GB
Pricier than about 61% 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 256 GB 2S4Rx4 PC4-3200AA-L
Part numberAT256G4D4D3200LO4N12 V
Total capacity1 TB (4 × 256 GB)
Product type288-Pin DDR4 SDRAM
Performance
Rated speedDDR4 3200 (PC4 25600)
Processor
ChipsetMajor Brand Chipset
Memory
CAS latencyCL22
ECC supportYes
Buffer typeLoad Reduced
Memory rank2S4Rx4 (8Rx4 3DS/TSV)
Kit configurationQuad Channel Kit
Heat spreaderNo
Power
Rated voltage1.2 V

Other versions of this model

3 more in the same range

Questions about this item

How do I install these 288-pin DDR4 LRDIMM modules and which step is most often missed?

Power off the server, open the chassis, align each module's notch with the slot key, press firmly until both retention clips click, then verify in BIOS that all four 256GB modules are detected at 3200 MHz; the step most often missed is checking the system manual for the correct quad-channel population order.

What maintenance or replacement will this 1TB ECC LRDIMM kit need over its service life?

No routine maintenance is required; the modules have no heat spreader and run at 1.20V, so keep server airflow clean and monitor ECC corrected-error counts — replace a module only if uncorrectable errors appear or the system logs a DIMM failure.

What is the first limit that appears when this octal-rank 3DS memory runs under sustained heavy load?

The CAS latency of CL22 at 3200 MHz sets the timing ceiling; under sustained load the memory controller's rank-to-rank switching latency and thermal throttling of the dense 3DS/TSV stacks become the limiting factors before bandwidth saturates.

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