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Eight green DDR4 UDIMM sticks in anti-static tray

A-Tech

A-Tech 64GB (8x8GB) DDR4 2666 ECC UDIMM 1Rx8 CL19 1.2V Server RAM

SKU CH-PE9E-Z6ADX

Eight 8 GB DDR4 ECC unbuffered modules totalling 64 GB at 2666 MHz CL19 1.2 V for servers and workstations

  • Total capacity64 GB (8 × 8 GB)
  • Rated speedDDR4 2666 (PC4 21300)
  • ChipsetMajor Brand Chipset
  • CAS latencyCL19
  • Rated voltage1.2 V
  • Buffer typeUnbuffered
  • 64 GB total capacity from eight 8 GB modules
  • ECC error correction protects data integrity in server workloads
  • DDR4 2666 MHz speed with CL19 latency for responsive performance
  • 2 V standard voltage keeps power draw efficient
  • 288-pin UDIMM form factor fits compatible server and workstation boards

64GB DDR4 ECC UDIMM kit

This 64GB kit contains eight 8GB DDR4 2666 modules built for servers and workstations that require ECC unbuffered memory. Each stick is a single-rank 1Rx8 DIMM operating at the standard 1.2V. The kit is not compatible with desktop or laptop platforms.

288-pin DIMM installation

The modules use the standard 288-pin DDR4 form factor and seat in regular UDIMM slots. No heat spreaders are fitted, so clearance around taller coolers is not a concern. The most common issue is installing these in a system that does not support ECC unbuffered memory, which prevents the system from posting.

Sustained workload stability

ECC error correction detects and corrects single-bit errors during continuous operation, helping maintain data integrity under heavy server loads. The CL19 latency and 2666 speed deliver consistent throughput for multi-threaded tasks. Modules are tested to meet quality standards for dependable long-term use.

How it compares

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

Price $811.99
Pricier than about 77% of the 6,523 comparable items (median $188.99).
Total capacity 64 GB (8 × 8 GB)
Higher than about 70% of the 6,064 comparable items (median 32 GB).
Price per GB $12.69 per GB
Pricier than about 72% 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 8 GB 1Rx8 PC4-2666 V-E
Part numberAT8G8D4D2666US8N12 V
Total capacity64 GB (8 × 8 GB)
Product type288-Pin DDR4 SDRAM
Performance
Rated speedDDR4 2666 (PC4 21300)
Processor
ChipsetMajor Brand Chipset
Memory
CAS latencyCL19
ECC supportYes
Buffer typeUnbuffered
Memory rank1Rx8
Heat spreaderNo
Power
Rated voltage1.2 V

Questions about this item

How can I confirm the kit is running at DDR4 2666 MHz with CL19 after installation?

Enter the BIOS or use a tool such as CPU-Z and verify the reported speed shows 2666 MHz and the CAS latency reads 19.

What exactly ships in the box and is anything else required?

The package contains eight 8 GB DDR4 ECC UDIMM modules for a total of 64 GB; no extra cables, brackets or software are needed.

Which capacity or version of this kit should I choose for my server?

This is a single 64 GB kit composed of eight 8 GB 1Rx8 modules at 1.2 V; select it only if your platform supports DDR4 ECC UDIMM at 2666 MHz.

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