Crucial

Crucial DDR2 PC2-6400 4GB (2x2GB) Dell OptiPlex 755 Upgrade

Name: Crucial DDR2 PC2-6400 4GB (2x2GB) Dell OptiPlex 755 Upgrade
Brand: Crucial
SKU: DDR2 PC2-6400
Rating: 4.7 (8 reviews)

★★★★★4.7 (8 reviews)

Upgrade Your Dell OptiPlex 755 with Reliable Crucial Memory Enhance the performance and stability of your Dell OptiPlex 755 Series (Desktop Mini-Tower and Small Form Factor) with this 4GB Crucial memory upgrade kit. Designed for reliability and compatibility, this memory ensures smooth multitaski...

$59.99*

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*Price sourced from Amazon.com. Last updated:Jul 21, 2026.Price and availability are subject to change.

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Overview

Upgrade Your Dell OptiPlex 755 with Reliable Crucial Memory

Enhance the performance and stability of your Dell OptiPlex 755 Series (Desktop Mini-Tower and Small Form Factor) with this 4GB Crucial memory upgrade kit. Designed for reliability and compatibility, this memory ensures smooth multitasking and optimal system performance. Trust Crucial for high-quality memory you can depend on.

Specifications:

Brand: Crucial
Type: DDR2 PC2-6400
Capacity: 4GB kit (2GBx2)
Compatibility: Dell OptiPlex 755 Series (Desktop Mini-Tower and Small Form Factor)
Features: Non-ECC

Key Features

240-pin DIMM

DDR2-800

Desktop/PC

Specifications

Capacity

4GB (2x2GB)

Type

DDR2

Speed

PC2-6400 (DDR2-800)

Pin Count

240-pin

Form Factor

DIMM

Compatibility

Desktop/PC, Dell OptiPlex 755 Upgrade

Frequently Asked Questions

What specific Dell model is this Crucial DDR2 RAM designed for?

This Crucial DDR2 PC2-6400 RAM is specifically designed as an upgrade for the Dell OptiPlex 755.

What is the total RAM capacity provided by this product?

This product provides a total of 4GB of RAM, consisting of two 2GB modules.

What type and speed of RAM is this?

This is DDR2 PC2-6400 RAM, operating at a speed equivalent to DDR2-800.

What is the physical form factor of these RAM modules?

These are 240-pin DIMM modules, which is the standard form factor for desktop and PC memory of this generation.

Can this RAM be used in laptops or other types of computers?

No, these are 240-pin DIMM modules specifically for Desktop/PC systems, and explicitly listed as an upgrade for the Dell OptiPlex 755, meaning they are not suitable for laptops or systems requiring different form factors or memory types.

What Buyers Say

4.7 ★★★★★8 Amazon ratings

👍 Pros

Specifically designed for Dell OptiPlex 755 systems, ensuring compatibility and ease of upgrade.
Offers a total of 4GB RAM across two 2GB modules, which can provide a noticeable performance boost for systems with less memory.
Features DDR2-800 speed, delivering efficient data transfer rates for its generation.
Utilizes the 240-pin DIMM form factor, which is standard for desktop/PC motherboards of that era.
Provides an economical way to extend the useful life of an older Dell OptiPlex 755 desktop.

👎 Cons

DDR2 technology is an older standard, making this RAM incompatible with newer motherboards that use DDR3 or DDR4.
The 4GB total capacity may still be limiting for modern operating systems or demanding applications.
Only suitable for systems that specifically support 240-pin DDR2-800 memory, limiting universal application.
The product information does not specify if this is ECC (Error-Correcting Code) or buffered/unbuffered memory.
Installing memory typically requires opening the computer case and may void the warranty of the Dell system if not performed correctly by the user.