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Two green 288-pin DDR4 LRDIMM modules with black chips, no heat spreaders

A-Tech

A-Tech 256GB (2x128GB) DDR4 2666 ECC LRDIMM 2S4Rx4 Server RAM

SKU CH-GA8D-7EHZ0

256 GB dual-channel DDR4-2666 ECC LRDIMM kit with two 128 GB octal-rank modules at CL19 and 1.2 V

  • Total capacity256 GB (2 × 128 GB)
  • Rated speedDDR4 2666 (PC4 21300)
  • ChipsetMajor Brand Chipset
  • CAS latencyCL19
  • Rated voltage1.2 V
  • Buffer typeLoad Reduced

Capacity 256GB (2 x 128GB)

  • 256 GB total capacity from two 128 GB modules
  • DDR4 2666 MHz speed rated at PC4-21300
  • ECC Load Reduced DIMM corrects errors and reduces bus load
  • 288-pin DIMM form factor for DDR4 server platforms
  • CAS latency CL19 at standard 1.20 V operation

Server kit capacity and purpose

This A-Tech kit supplies 256 GB of DDR4 server memory as two 128 GB LRDIMM modules. It is built for DDR4-compatible servers and workstations that require ECC load-reduced DIMMs and will not work in desktop or laptop systems.

Sustained-load behaviour

The modules run at 2666 MHz with CL19 latency and 1.20 V, using 3DS/TSV octal-rank organisation to keep electrical loading low on the memory bus. ECC and load-reduced buffering maintain data integrity and signal stability during extended, high-capacity workloads.

Pre-purchase checks

Verify that your platform supports DDR4 288-pin LRDIMMs at 2666 MHz and accepts 2S4Rx4 (8Rx4) rank configurations. Consult the system manual for correct slot population rules and maximum supported capacity per channel before ordering.

How it compares

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

Price $1,161.99
Pricier than about 81% of the 6,523 comparable items (median $188.99).
Total capacity 256 GB (2 × 128 GB)
Higher than about 90% of the 6,064 comparable items (median 32 GB).
Price per GB $4.54 per GB
Cheaper than about 77% 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 (2 × 128 GB) 2S4Rx4 PC4-2666 V-L
Part numberNE-SS-0709
Total capacity256 GB (2 × 128 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)
Kit configurationDual Channel Kit
Heat spreaderNo
Power
Rated voltage1.2 V

Other versions of this model

5 more in the same range

Questions about this item

How much power does each 128GB module draw at 1.2V during continuous server workloads?

Each module operates at the standard DDR4 voltage of 1.2V; exact power draw depends on the server platform and workload intensity.

What server platform and memory slots are required to install this 256GB DDR4 2666 LRDIMM kit?

This kit requires a DDR4 server or workstation motherboard with 288-pin DIMM slots that explicitly support Load Reduced ECC memory at 2666 MHz.

Can these octal-rank 128GB LRDIMMs be mixed with existing DDR4 RDIMMs in the same server?

Mixing LRDIMMs with standard RDIMMs is not supported; all populated slots must use the same Load Reduced ECC module type for stable operation.

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