Crucial

Crucial CT32M72S4D7E 256MB PC133 SDRAM Memory

Name: Crucial CT32M72S4D7E 256MB PC133 SDRAM Memory
Brand: Crucial
SKU: CT32M72S4D7E

Crucial's CT32M72S4D7E delivers 256MB of PC133 SDRAM in a 168-pin DIMM for legacy system memory upgrades.

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Overview

The Crucial CT32M72S4D7E is a 256MB SDRAM module built to the PC133 specification, operating at 133MHz in a 168-pin DIMM form factor. This places it firmly in the legacy memory category, designed for desktop systems, workstations, and certain server platforms manufactured in the late 1990s and early 2000s. The module's 72-bit data path indicates ECC (Error-Correcting Code) capability, making it appropriate for systems where data integrity is a priority, such as file servers or engineering workstations from that era that are still performing useful tasks.

Manufactured by Crucial, a consumer brand of Micron Technology—one of the world's largest memory chip producers—this module carries the quality assurance and compatibility testing that the Crucial name is known for. For organizations or individuals maintaining legacy equipment that cannot be replaced or upgraded to modern platforms, this SDRAM module provides a reliable way to maximize available system memory. While 256MB is negligible by today's standards, it can make a meaningful difference in the performance of older operating systems and applications that were designed to run within those constraints.

Key Features

Storage Capacity - 256 MB

Technology - SDRAM

Form Factor - 168-pin DIMM

Memory Speed -- 133MHz PC133

Specifications

Capacity

256MB

Memory Type

SDRAM

Speed

133MHz (PC133)

Form Factor

168-pin DIMM

Data Path

72-bit (ECC)

Brand

Crucial (Micron)

Model

CT32M72S4D7E

Pros & Cons

👍 Pros

Crucial is a well-established memory brand backed by Micron, offering reliable compatibility and quality.
The PC133 specification provides a straightforward upgrade path for legacy systems still in active use.
ECC support helps prevent memory errors in workstations and servers that demand data integrity.

👎 Cons

The 256MB capacity is very small by modern standards and only suitable for legacy hardware.
PC133 SDRAM is an obsolete standard, limiting this module's usefulness to aging systems that cannot be upgraded further.
Finding compatible 168-pin DIMM motherboards for testing or replacement is increasingly difficult.

Frequently Asked Questions

What type of systems is this Crucial 256MB SDRAM module compatible with?

This module is designed for older desktop systems and workstations that use 168-pin DIMM slots and support PC133 SDRAM. It is not compatible with modern DDR-based systems.

Is this Crucial SDRAM module ECC or non-ECC?

The CT32M72S4D7E designation indicates a 72-bit data path, which means this is an ECC (Error-Correcting Code) module, suitable for systems that require or support ECC memory.

Can this module be used alongside existing SDRAM already installed in a system?

Yes, as long as your system supports PC133 SDRAM in 168-pin DIMM slots, this module can typically be installed alongside existing compatible memory to increase total system RAM.

What speed does this SDRAM module operate at?

It operates at 133MHz, conforming to the PC133 SDRAM standard.