---
product_id: 791392338
title: "A-Tech 8GB DDR4 2666MHz PC4-21300 ECC RDIMM 2Rx8 Dual Rank 1.2V ECC Registered DIMM 288-Pin Server & Workstation RAM Memory Upgrade Module (A-Tech Enterprise Series)"
brand: "a-tech"
price: "¥16683"
currency: JPY
in_stock: true
url: https://www.desertcart.jp/products/791392338-a-tech-8gb-ddr4-2666mhz-pc4-21300-ecc-rdimm-2rx8
store_origin: JP
region: Japan
---

# 2666MHz blazing speed 288-pin DDR4 DIMM dual rank ECC Registered for error-free stability A-Tech 8GB DDR4 2666MHz PC4-21300 ECC RDIMM 2Rx8 Dual Rank 1.2V ECC Registered DIMM 288-Pin Server & Workstation RAM Memory Upgrade Module (A-Tech Enterprise Series)

**Brand:** a-tech
**Price:** ¥16683
**Availability:** ✅ In Stock

## Summary

> 🚀 Power your enterprise with precision memory that means business.

## Quick Answers

- **What is this?** A-Tech 8GB DDR4 2666MHz PC4-21300 ECC RDIMM 2Rx8 Dual Rank 1.2V ECC Registered DIMM 288-Pin Server & Workstation RAM Memory Upgrade Module (A-Tech Enterprise Series) by a-tech
- **How much does it cost?** ¥16683 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/791392338-a-tech-8gb-ddr4-2666mhz-pc4-21300-ecc-rdimm-2rx8)

## 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

- • **Blazing 2666MHz DDR4 Speed:** Turbocharge your server’s memory bandwidth and crush bottlenecks with lightning-fast data flow.
- • **ECC Registered Reliability:** Experience rock-solid error correction that keeps mission-critical workloads running flawlessly.
- • **Dual Rank 2Rx8 Architecture:** Maximize memory density and performance with advanced dual rank design tailored for enterprise-grade systems.
- • **Lifetime Warranty & Elite Support:** Invest with confidence backed by A-Tech’s limited lifetime warranty and expert customer care.
- • **Optimized for Servers & Workstations:** Specifically engineered for select DDR4 servers and workstations — no desktop or laptop compromises here.

## Overview

The A-Tech 8GB DDR4 2666MHz PC4-21300 ECC Registered RDIMM is a high-performance, dual rank 288-pin memory module designed exclusively for select DDR4 servers and workstations. Operating at a low 1.2V with ECC error correction, it ensures enhanced system stability and workload efficiency. Built to JEDEC standards and backed by a limited lifetime warranty, this module is a reliable upgrade for professionals demanding robust, error-free memory performance.

## Description

Full description not available

## Features

- A-Tech RAM Memory compatible for select DDR4 Servers & Workstation systems only; (*WILL NOT WORK with Desktop Computers, Laptop Computers, or PCs of any kind*)
- Single 8GB RAM Module; DDR4 DIMM 288 Pin; Speeds up to 2666MHz/2667MHz PC4-21300 (PC4-2666V)
- ECC Registered RDIMM; 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 Registered and cannot be mixed with different ECC types such as ECC Unbuffered, 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 |
|---------------|-------|
| RAM | 8 GB DDR4 |
| Brand | A-Tech |
| Item model number | AT8G1D4D2666RD8N12V |
| Item Weight | 0.8 ounces |
| Product Dimensions | 5.25 x 1.23 x 0.15 inches |
| Item Dimensions  LxWxH | 5.25 x 1.23 x 0.15 inches |
| Color | 1 Module |
| Computer Memory Type | DDR4 SDRAM |
| Voltage | 1.2 Volts |
| Manufacturer | A-Tech |
| ASIN | B0C4VJ2D24 |
| Date First Available | May 10, 2023 |

## Product Details

- **Brand:** A-Tech
- **Computer Memory Size:** 8 GB
- **RAM Memory Technology:** DDR4
- **Memory Speed:** 2666 MHz
- **Compatible Devices:** Server, Workstation

## Images

![A-Tech 8GB DDR4 2666MHz PC4-21300 ECC RDIMM 2Rx8 Dual Rank 1.2V ECC Registered DIMM 288-Pin Server & Workstation RAM Memory Upgrade Module (A-Tech Enterprise Series) - Image 1](https://m.media-amazon.com/images/I/71yU4-gsD1L.jpg)
![A-Tech 8GB DDR4 2666MHz PC4-21300 ECC RDIMM 2Rx8 Dual Rank 1.2V ECC Registered DIMM 288-Pin Server & Workstation RAM Memory Upgrade Module (A-Tech Enterprise Series) - Image 2](https://m.media-amazon.com/images/I/71vmYnIKBXL.jpg)
![A-Tech 8GB DDR4 2666MHz PC4-21300 ECC RDIMM 2Rx8 Dual Rank 1.2V ECC Registered DIMM 288-Pin Server & Workstation RAM Memory Upgrade Module (A-Tech Enterprise Series) - Image 3](https://m.media-amazon.com/images/I/71kV+DRPnRL.jpg)
![A-Tech 8GB DDR4 2666MHz PC4-21300 ECC RDIMM 2Rx8 Dual Rank 1.2V ECC Registered DIMM 288-Pin Server & Workstation RAM Memory Upgrade Module (A-Tech Enterprise Series) - Image 4](https://m.media-amazon.com/images/I/81Hyp3y2GQL.jpg)
![A-Tech 8GB DDR4 2666MHz PC4-21300 ECC RDIMM 2Rx8 Dual Rank 1.2V ECC Registered DIMM 288-Pin Server & Workstation RAM Memory Upgrade Module (A-Tech Enterprise Series) - Image 5](https://m.media-amazon.com/images/I/81oSFJ+9nuL.jpg)

## Available Options

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

## Questions & Answers

**Q: Will this work in my desktop computer?**
A: No, this memory is designed for servers and select workstations that support DDR4 ECC Registered memory only. If you’re unsure, contact our support team, we’re happy to help you find the exact memory your system needs!

**Q: What’s the difference between DDR4 and other types of memory and can I use them interchangeably?**
A: No, DDR4 memory is not compatible or interchangeable with other types such as DDR5, DDR3, and so on. Each memory type uses different slot designs, voltages, and architectures, so your system must support the memory type specifically.

**Q: Can I mix ECC Registered (ECC RDIMM) modules with other ECC types?**
A: No, you cannot mix ECC Registered with ECC Unbuffered (ECC UDIMM), Load-Reduced (LRDIMM), or Non-ECC Unbuffered (Non-ECC UDIMM) modules. All installed memory modules must be the same ECC type or your system will fail to boot.

**Q: What ECC type does my system need and which slots should I use?**
A: Refer to your system or motherboard manual for supported ECC types and correct memory channel configuration. Using the wrong type or incorrect slot population can cause boot failures or reduce system stability.

**Q: Why isn't my memory running at the advertised speed?**
A: Memory speed can drop when more DIMMs are installed per channel due to increased electrical load. This is normal and can vary based on your system’s design. Check your server’s memory population and configuration rules for optimal performance.

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-01-26*