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Green rectangular DDR4 DIMM module with gold edge contacts and black chips, 288 pins, 128GB capacity

A-Tech

A-Tech 128GB DDR4 2666 ECC RDIMM 2S4Rx4 1.2V Server Memory

SKU CH-D4PC-7TWAK

A 128 GB DDR4 2666 registered ECC DIMM for server workloads needing high capacity and error correction

  • Capacity128GB
  • SpeedDDR4 2666 (PC4 21300)
  • CAS LatencyCL19
  • Voltage1.20V
  • ECCYes
  • Buffered/RegisteredRegistered
  • 128GB capacity expands server memory for heavy workloads
  • DDR4 2666MHz speed delivers PC4-21300 bandwidth for data-intensive tasks
  • ECC registered design corrects errors to protect data integrity
  • 2V operation matches DDR4 standard voltage for efficient power use
  • 2S4Rx4 8Rx4 3DS/TSV architecture enables high-density 128GB module

Server Memory Upgrade

This A-Tech module delivers 128GB of DDR4 2666MHz registered ECC memory in a single 288-pin DIMM. It is built for servers and workstations that require error-correcting, buffered modules to maintain data integrity under heavy workloads. The 2S4Rx4 organisation with 3DS/TSV stacking enables this high density on one stick.

Registered ECC Design

The module operates at the standard 1.2V DDR4 voltage with CL19 latency and a registered buffer that reduces electrical load on the memory controller. Registered ECC RDIMM architecture suits multi-socket platforms where signal integrity and error detection are critical for uptime. A 262-pin form factor matches the mechanical slot specification for compatible systems.

Capacity Expansion Path

This part replaces IBM-Lenovo 7X77A01307 and 01DE977 modules, letting administrators add 128GB per slot without populating multiple lower-density DIMMs. The jump is worthwhile when the platform supports 3DS/TSV registered DIMMs and the application benefits from fewer occupied slots for future scaling. Buyers needing non-ECC unbuffered memory or lower voltages should look elsewhere.

Points forts

  • 128GB capacity expands server memory for heavy workloads
  • DDR4 2666MHz speed delivers PC4-21300 bandwidth for data-intensive tasks
  • ECC registered design corrects errors to protect data integrity
  • 2V operation matches DDR4 standard voltage for efficient power use
  • 2S4Rx4 8Rx4 3DS/TSV architecture enables high-density 128GB module

Caractéristiques

BrandA-Tech
SeriesCompatible Replacement for IBM-Lenovo
Model7X77A01307, 01DE977
Capacity128GB
SpeedDDR4 2666 (PC4 21300)
CAS LatencyCL19
Voltage1.20V
ECCYes
Buffered/RegisteredRegistered
Rank2S4Rx4 (8Rx4)
ChipsetMajor Brand Chipset
Features7X77A01307, 01DE977

Questions sur cet article

What speed does the DDR4 2666 interface cap at in practice?

The module runs at DDR4 2666 (PC4-21300) with CL19 latency, so the practical data rate is 2666 MT/s.

What physical slot and pin count does this 288-pin DIMM require?

It fits a standard DDR4 DIMM slot with 288 pins; the form factor is listed as DIMM (262 Pin) in the specifications.

How is the module installed and what step do people often miss?

Align the notch on the 288-pin DIMM with the slot key, press firmly until both side clips click, and verify the system recognises the full 128GB capacity.

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