Intel

Intel Core 2 Quad Q9400 2.66GHz CPU (Renewed)

4.5 (2 reviews)

Reliable Performance for Legacy Systems with the Intel Core 2 Quad Q9400 (Renewed) The Intel Core 2 Quad Q9400 is a quad-core processor designed for desktop computers. This renewed CPU offers a cost-effective solution for upgrading older systems and provides reliable performance for everyday task...

$76.00*
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*Price sourced from Amazon.com. Last updated:Jun 04, 2026.Price and availability are subject to change.

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Overview

Reliable Performance for Legacy Systems with the Intel Core 2 Quad Q9400 (Renewed)

The Intel Core 2 Quad Q9400 is a quad-core processor designed for desktop computers. This renewed CPU offers a cost-effective solution for upgrading older systems and provides reliable performance for everyday tasks. It has been professionally inspected and tested to ensure it works and looks like new.

Specifications:

  • Processor: Intel Core 2 Quad Q9400 2.66GHz
  • Bus Speed: 1333MHz
  • Cache: 6MB
  • Socket Type: LGA775

Key Features

Intel Wide Dynamic Execution , enabling delivery of more instructions per clock cycle to improve execution time and energy efficiency

Intel Intelligent Power Capability , designed to deliver more energy-efficient performance

Intel Smart Memory Access , improving system performance by optimizing the use of the available data bandwidth

Intel Advanced Smart Cache , providing a higher-performance, more efficient cache subsystem. Optimized for multi-core and dual-core processors

Specifications

Model
Core 2 Quad Q9400
Processor Speed
2.66GHz
Core Count
Quad
Technology
Intel Wide Dynamic Execution
Power Management
Intel Intelligent Power Capability
Memory Access
Intel Smart Memory Access
Cache
Intel Advanced Smart Cache

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Pros & Cons

👍 Pros

  • Features Intel Wide Dynamic Execution, which enables more instructions per clock cycle for improved execution time and energy efficiency.
  • Equipped with Intel Intelligent Power Capability, specifically designed to deliver more energy-efficient performance for reduced power consumption.
  • Includes Intel Smart Memory Access, optimizing the use of available data bandwidth to enhance overall system performance.
  • Boasts Intel Advanced Smart Cache, providing a higher-performance and more efficient cache subsystem that is optimized for multi-core processors.
  • The Intel Core 2 Quad Q9400 processor is optimized for multi-core and dual-core processors, making it suitable for systems designed for this architecture.

👎 Cons

  • The Intel Core 2 Quad Q9400 is an older generation processor (renewed), which will not match the performance or efficiency of modern CPUs.
  • Specific details regarding the socket type (e.g., LGA775) are not explicitly mentioned, which is crucial for compatibility.
  • The 2.66GHz clock speed, while respectable for its generation, is significantly lower than current mainstream processors.
  • This CPU lacks modern instruction sets and architectural improvements found in newer Intel generations, potentially limiting compatibility with some software.
  • As a renewed product, its long-term reliability and the extent of its warranty might be less robust than a new, contemporary processor.

Frequently Asked Questions

The Intel Core 2 Quad Q9400 CPU operates at a clock speed of 2.66GHz.
This Intel Core 2 Quad Q9400 processor features a Quad-Core design.
Intel Wide Dynamic Execution enables the delivery of more instructions per clock cycle, which improves execution time and energy efficiency for the Core 2 Quad Q9400.
Intel Intelligent Power Capability is designed to deliver more energy-efficient performance for the Intel Core 2 Quad Q9400, optimizing power consumption.
Intel Advanced Smart Cache provides a higher-performance, more efficient cache subsystem that is optimized for multi-core and dual-core processors like the Core 2 Quad Q9400.