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Eight green DDR4 DIMMs, 288-pin, black chips, silver contacts

A-Tech

A-Tech 512GB (8x64GB) DDR4 2666 ECC RDIMM 2S2Rx4 3DS Server RAM

SKU CH-A52J-AAV4H

Eight 64 GB DDR4 2666 ECC registered DIMMs deliver 512 GB of quad-rank server memory at 1.2 V

  • Total capacity512 GB (8 × 64 GB)
  • Rated speedDDR4 2666 (PC4 21300)
  • ChipsetMajor Brand Chipset
  • CAS latencyCL19
  • Rated voltage1.2 V
  • Buffer typeRegistered

Capacity 512GB (8 x 64GB)

  • 512GB total capacity from eight 64GB modules for large server workloads
  • DDR4 2666 MHz speed with CL19 latency for responsive data access
  • ECC registered RDIMM with 3DS/TSV quad-rank design for error correction and density
  • 20V standard DDR4 voltage for efficient power use
  • 288-pin DIMM form factor built for compatible DDR4 server and workstation platforms

Server capacity and audience

This kit supplies 512GB across eight 64GB DDR4 2666 registered ECC modules. It is built for servers and workstations that require registered memory with error correction. Desktop and laptop platforms cannot use these modules.

Registered DDR4 interface limits

The DDR4 2666 standard tops out at 2666 MT/s with a CL19 latency at 1.20V. Registered DIMMs add a clock cycle for buffering, so raw bandwidth is capped by the PC4-21300 rating. Quad-rank 3DS organisation increases density but can restrict the number of modules per channel on some platforms.

Build quality and daily implications

Each 288-pin module uses major-brand chips and undergoes quality-assurance testing. The 3DS stacking allows 64GB per stick, so the 512GB total fits in eight slots. Registered signalling and ECC protect data integrity in multi-socket systems running continuous workloads.

How it compares

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

Price $1,813.99
Pricier than about 85% of the 6,523 comparable items (median $188.99).
Total capacity 512 GB (8 × 64 GB)
Higher than about 91% of the 6,064 comparable items (median 32 GB).
Price per GB $3.54 per GB
Cheaper than about 85% 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 64 GB 2S2Rx4 PC4-2666 V-R
Total capacity512 GB (8 × 64 GB)
Performance
Rated speedDDR4 2666 (PC4 21300)
Processor
ChipsetMajor Brand Chipset
Memory
CAS latencyCL19
ECC supportYes
Buffer typeRegistered
Memory rank2S2Rx4 (4Rx4 3DS/TSV)
Power
Rated voltage1.2 V

Other versions of this model

5 more in the same range

Questions about this item

Should I buy the 512GB kit or can I start with fewer 64GB modules?

The kit contains eight matched 64GB modules totalling 512GB; mixing capacities or ranks is not supported for registered ECC configurations.

What does DDR4 2666 CL19 mean for my server workload?

The modules run at 2666 MHz with CL19 latency at 1.2V, providing registered ECC throughput suited for virtualisation and database tasks.

Will these 288-pin RDIMMs work in any DDR4 server slot?

They are 288-pin DDR4 RDIMMs with 2S2Rx4 3DS organisation; compatibility depends on your platform's qualified vendor list and memory-channel rules.

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