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A single green DDR4 DIMM with black memory chips and gold edge connectors

A-Tech

A-Tech 64GB DDR4 2666 ECC RDIMM 2S2Rx4 Server Memory

SKU CH-NT27-VB8X0

A 64 GB DDR4 2666 MHz ECC registered DIMM with CL19 latency and 1.2 V operation for server workloads

  • Total capacity64 GB
  • Rated speedDDR4 2666 (PC4 21300)
  • ChipsetMajor Brand Chipset
  • CAS latencyCL19
  • Rated voltage1.2 V
  • Buffer typeRegistered
  • 64 GB capacity handles heavy server workloads
  • DDR4 2666 MHz speed moves data quickly
  • ECC registered design corrects errors automatically
  • 2 V operation reduces power draw
  • 288-pin DIMM fits standard server slots

64 GB DDR4 2666 ECC RDIMM

This module delivers 64 GB of DDR4 2666 memory in a single registered DIMM. It targets servers and workstations that require error-correcting code for data integrity. The 2S2Rx4 organisation provides high density for multi-socket platforms. Builders expanding memory capacity in compatible systems will benefit from the added bandwidth.

Registered DIMM for DDR4 platforms

The 288-pin form factor fits standard DDR4 RDIMM slots on server and workstation motherboards. Registered buffering reduces electrical load on the memory controller, allowing larger populations per channel. ECC capability corrects single-bit errors to maintain uptime. Verify the system's qualified vendor list before installation to ensure proper operation.

Sustained load stability at 1.2 V

Operating at 1.20 V with CL19 latency, the module maintains consistent throughput during extended compute tasks. Major-brand chips undergo validation testing to meet server-grade reliability standards. The registered design helps signal integrity under continuous heavy traffic. Thermal characteristics remain within DDR4 specifications for densely populated configurations.

How it compares

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

Price $254.99
Pricier than about 57% of the 6,523 comparable items (median $188.99).
Total capacity 64 GB
Higher than about 70% of the 6,064 comparable items (median 32 GB).
Price per GB $3.98 per GB
Cheaper than about 82% of the 6,064 comparable items (median $7.25 per GB).

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Specifications

Product
Brand nameA-Tech
Total capacity64 GB
Performance
Rated speedDDR4 2666 (PC4 21300)
Processor
ChipsetMajor Brand Chipset
Memory
CAS latencyCL19
ECC supportYes
Buffer typeRegistered
Memory rank2S2Rx4 (4Rx4)
Power
Rated voltage1.2 V

Questions about this item

Does the CL19 latency become a bottleneck when the 64GB module runs at DDR4 2666 for long periods?

CL19 is the rated CAS latency at 2666 MHz; sustained throughput stays at PC4-21300 as long as the system keeps the module at its 1.20 V specification.

How much heat does the registered 4Rx4 DIMM produce when it operates continuously at 1.20 V in a server chassis?

The module runs at standard DDR4 1.20 V with registered buffering, so thermal output matches typical 64 GB RDIMM levels for 288-pin DDR4 2666 operation.

What motherboard feature must already be present for this 288-pin ECC RDIMM to function?

The board must provide a DDR4 288-pin RDIMM slot with ECC support and a memory controller that accepts 2S2Rx4 (4Rx4) registered modules.

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