---
product_id: 736923795
title: "A-Tech 128GB Kit (4x32GB) DDR4 2666MHz PC4-21300 ECC SODIMM 2Rx8 Dual Rank 1.2V 260-Pin RAM Memory Upgrade Modules for Microserver, Workstation, and Networking Platforms"
brand: "a-tech"
price: "S$2336"
currency: SGD
in_stock: true
reviews_count: 3
category: "A Tech"
url: https://www.desertcart.sg/products/736923795-a-tech-128gb-kit-4x32gb-ddr4-2666mhz-pc4-21300-ecc
store_origin: SG
region: Singapore
---

# 2666MHz blazing speed 128GB total capacity ECC Unbuffered error correction A-Tech 128GB Kit (4x32GB) DDR4 2666MHz PC4-21300 ECC SODIMM 2Rx8 Dual Rank 1.2V 260-Pin RAM Memory Upgrade Modules for Microserver, Workstation, and Networking Platforms

**Brand:** a-tech
**Price:** S$2336
**Availability:** ✅ In Stock

## Summary

> 🚀 Upgrade your system’s brainpower — because speed and reliability aren’t optional.

## Quick Answers

- **What is this?** A-Tech 128GB Kit (4x32GB) DDR4 2666MHz PC4-21300 ECC SODIMM 2Rx8 Dual Rank 1.2V 260-Pin RAM Memory Upgrade Modules for Microserver, Workstation, and Networking Platforms by a-tech
- **How much does it cost?** S$2336 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sg](https://www.desertcart.sg/products/736923795-a-tech-128gb-kit-4x32gb-ddr4-2666mhz-pc4-21300-ecc)

## Best For

- a-tech enthusiasts

## Why This Product

- Trusted a-tech brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Massive 128GB Capacity:** Handle heavy multitasking and demanding workloads effortlessly with 4x32GB modules.
- • **Blazing 2666MHz DDR4 Speed:** Turbocharge your microserver and workstation performance with lightning-fast memory bandwidth.
- • **ECC Unbuffered Reliability:** Minimize data corruption and system crashes with enterprise-grade error correction.
- • **Lifetime Warranty & US Support:** Invest confidently with a limited lifetime warranty backed by expert, US-based technical assistance.
- • **Optimized for Microservers & Workstations:** Specifically engineered for select DDR4 embedded systems, ensuring seamless compatibility and peak efficiency.

## Overview

The A-Tech 128GB DDR4 2666MHz ECC Unbuffered SO-DIMM kit (4x32GB) is a high-capacity, enterprise-grade memory upgrade designed for select microservers, workstations, and networking platforms. Featuring dual-rank 2Rx8 modules, JEDEC standard 1.2V operation, and error-correcting code (ECC) technology, it delivers enhanced system stability, faster multitasking, and reduced bottlenecks. Backed by a limited lifetime warranty and US-based support, this RAM kit is ideal for professionals seeking reliable, high-performance memory tailored to specialized computing environments.

## Description

Give your system the upgrade it deserves with A-Tech Memory (RAM). Whether you're gaming, working, streaming, or upgrading enterprise systems, enjoy faster speeds, smooth multitasking, and the ability to tackle more demanding tasks without breaking the bankCompatible with select DDR4 microservers, workstations, networking platforms, and embedded systems SystemsMemory Specs Memory Size: 128 GB Kit, (4 x 32 GB Modules) Memory Type: DDR4 Form Factor: SO-DIMM ( 260 Pin ) Speed: 2666 MHz / 2667 MHz ( PC4-21300 / PC4-2666V ) ECC Type: ECC Unbuffered Rank: 2Rx8 - Dual Rank x8 Voltage: 1.2VEnsured ReliabilityAll A-Tech Memory products are rigorously tested to ensure that your memory meets our stringent quality and performance standards.Limited Lifetime WarrantyPurchase with confidence knowing that all A-Tech orders are covered by our Limited Lifetime WarrantyUS Based Technical SupportHave questions or need assistance? Our top-rated, U.S. based support team is here to guide you every step of the way, ensuring you're completely satisfied with your A-Tech Memory purchase

Review: Works great in a Synology DS1621+ - I got this RAM to upgrade my Synology NAS from it's factory installed 4GB to 64GB. This is a much cheaper way to upgrade the RAM than buying Synology RAM and works just as well. It is ECC RAM, just like the factory RAM. It also allows for a full 64GB rather than the Synology stated limit of 32GB. I noticed a substantial improvement in NAS performance after installing this RAM. I'm very happy and will purchase A-Tech RAM again.
Review: Great product - A-Tech is the memory we buy when they meet the specification required by our systems. They are great, haven't had a single problem with any of them. We are now testing this ECC unbuffered variation of 32GB SODIMMs good for our high end Synology NASes-

## Features

- A-Tech RAM Memory compatible for select DDR4 microservers, workstations, networking platforms, and embedded systems; (Will not work with standard laptop computers or desktop PCs)
- 128GB RAM Kit (4 x 32GB Modules); DDR4 SO-DIMM 260 Pin; Speeds up to 2666MHz/2667MHz PC4-21300 (PC4-2666V)
- ECC Unbuffered; 2Rx8 - Dual Rank x8; JEDEC DDR4 standard 1.2V
- Improves system performance, workload capacity, and reduces bottlenecks by increasing memory (RAM) resources
- Note: This memory is ECC Unbuffered and cannot be mixed with different ECC types such as ECC Registered, ECC Load Reduced, or Non-ECC Unbuffered; (Memory compatibility can vary among different system models and their installed components; please verify compatibility and follow memory channel guidelines to ensure maximum performance)
- Each A-Tech memory module is built and tested for superior performance and trusted reliability
- All A-Tech products are covered with a Limited Lifetime Warranty and are backed by our top rated support team to help guide you every step of the way

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0DYQGRD71 |
| Additional Features | ECC Unbuffered, Ecc |
| Best Sellers Rank | #842 in Computer Memory |
| Brand | A-Tech |
| Column Address Strobe Latency | CL19 |
| Compatible Devices | Embedded Systems, Microserver, Mobile Workstation, Networking Platforms |
| Computer Memory Size | 128 GB |
| Customer Reviews | 5.0 out of 5 stars 5 Reviews |
| Data Transfer Rate | 21300 megabytes_per_second |
| Form Factor | SO-DIMM |
| Manufacturer | A-Tech |
| Memory Speed | 2666 MHz |
| Mfr Part Number | AT32G4D4S2666ED8N12V |
| Model Number | AT32G4D4S2666ED8N12V |
| Number of Items | 4 |
| Number of Pins | 260 |
| RAM Memory Technology | DDR4 |
| RAM Size | 128 GB |
| Special Feature | ECC Unbuffered, Ecc |
| Voltage | 1.2 volts |
| Warranty Description | Limited Lifetime Warranty covering defects in materials and workmanship |

## Product Details

- **Brand:** A-Tech
- **Compatible Devices:** Embedded Systems, Microserver, Mobile Workstation, Networking Platforms
- **Computer Memory Size:** 128 GB
- **Memory Speed:** 2666 MHz
- **RAM Memory Technology:** DDR4

## Images

![A-Tech 128GB Kit (4x32GB) DDR4 2666MHz PC4-21300 ECC SODIMM 2Rx8 Dual Rank 1.2V 260-Pin RAM Memory Upgrade Modules for Microserver, Workstation, and Networking Platforms - Image 1](https://m.media-amazon.com/images/I/91tTh69IcUL.jpg)
![A-Tech 128GB Kit (4x32GB) DDR4 2666MHz PC4-21300 ECC SODIMM 2Rx8 Dual Rank 1.2V 260-Pin RAM Memory Upgrade Modules for Microserver, Workstation, and Networking Platforms - Image 2](https://m.media-amazon.com/images/I/81cL5ctM8GL.jpg)
![A-Tech 128GB Kit (4x32GB) DDR4 2666MHz PC4-21300 ECC SODIMM 2Rx8 Dual Rank 1.2V 260-Pin RAM Memory Upgrade Modules for Microserver, Workstation, and Networking Platforms - Image 3](https://m.media-amazon.com/images/I/61c1Vw+dEuL.jpg)
![A-Tech 128GB Kit (4x32GB) DDR4 2666MHz PC4-21300 ECC SODIMM 2Rx8 Dual Rank 1.2V 260-Pin RAM Memory Upgrade Modules for Microserver, Workstation, and Networking Platforms - Image 4](https://m.media-amazon.com/images/I/81gmro-O3+L.jpg)
![A-Tech 128GB Kit (4x32GB) DDR4 2666MHz PC4-21300 ECC SODIMM 2Rx8 Dual Rank 1.2V 260-Pin RAM Memory Upgrade Modules for Microserver, Workstation, and Networking Platforms - Image 5](https://m.media-amazon.com/images/I/718XzhQu7mL.jpg)

## Available Options

This product comes in different **Color, Size, Style** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Works great in a Synology DS1621+
*by R***N on March 26, 2024*

I got this RAM to upgrade my Synology NAS from it's factory installed 4GB to 64GB. This is a much cheaper way to upgrade the RAM than buying Synology RAM and works just as well. It is ECC RAM, just like the factory RAM. It also allows for a full 64GB rather than the Synology stated limit of 32GB. I noticed a substantial improvement in NAS performance after installing this RAM. I'm very happy and will purchase A-Tech RAM again.

### ⭐⭐⭐⭐⭐ Great product
*by R***R on February 23, 2023*

A-Tech is the memory we buy when they meet the specification required by our systems. They are great, haven't had a single problem with any of them. We are now testing this ECC unbuffered variation of 32GB SODIMMs good for our high end Synology NASes-

### ⭐⭐⭐⭐⭐ Compatible with Synology DS1821+
*by R***T on August 12, 2025*

Works on my Synology DS1821+ Been working since April 2024 without any problems.

## Frequently Bought Together

- A-Tech 128GB Kit (4x32GB) DDR4 2666MHz PC4-21300 ECC SODIMM 2Rx8 Dual Rank 1.2V 260-Pin RAM Memory Upgrade Modules for Microserver, Workstation, and Networking Platforms
- Samsung Electronics 870 EVO 2TB 2.5 Inch SATA III Internal SSD (MZ-77E2T0B/AM)
- Crucial 16GB DDR4 RAM, 3200MHz CL22 (or 2933MHz or 2666MHz) Laptop Memory, SODIMM 260-Pin, Compatible with 13th Gen Intel Core and AMD Ryzen 7000 - CT16G4SFRA32A

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*Product available on Desertcart Singapore*
*Store origin: SG*
*Last updated: 2026-10-24*