Intel Pentium 4 651 3.4GHz 800MHz 2MB LGA 775 CPU vs Intel Boxed Core I7-6700 FC-LGA14C 3.40 GHz 8 M Processor Cache 4 LGA 1151 BX806
Updated August 2026 — The Intel Boxed Core i7-6700 is the superior choice for performance and future-proofing, while the Pentium 4 651 is suitable for basic tasks.
The Intel Boxed Core i7-6700 is the superior choice for performance and future-proofing, while the Pentium 4 651 is suitable for basic tasks.
Why Intel Pentium 4 651 3.4GHz 800MHz 2MB LGA 775 CPU is better
price
Pentium 4 651 is significantly cheaper.
power usage
Lower thermal design power for basic tasks.
basic tasks
Adequate for simple computing needs.
Why Intel Boxed Core I7-6700 FC-LGA14C 3.40 GHz 8 M Processor Cache 4 LGA 1151 BX806 is better
performance
Higher clock speed and cache.
compatibility
Supports modern DDR4 memory.
future-proofing
Better architecture for upcoming software.
Overall score
Specifications
| Spec | Intel Pentium 4 651 3.4GHz 800MHz 2MB LGA 775 CPU | Intel Boxed Core I7-6700 FC-LGA14C 3.40 GHz 8 M Processor Cache 4 LGA 1151 BX806 |
|---|---|---|
| Brand | Intel | Intel |
| Socket | LGA 775 | LGA 1151 |
| TDP | Lower | Higher |
| Turbo Boost | No | Yes |
| Memory Support | DDR2 | DDR4, DDR3L |
| Target Audience | Budget Users | Gamers/Professionals |
Dimension comparison
Overview of the Intel Pentium 4 651 and Intel Boxed Core i7-6700
The Intel Pentium 4 651 and Intel Boxed Core i7-6700 cater to different user needs and performance benchmarks. The Pentium 4 651, priced at C$49.99, is a legacy processor aimed at basic computing tasks, while the Core i7-6700, costing C$141.44, is designed for high-performance computing, making it suitable for gaming and intensive applications.
The Pentium 4 651 operates at 3.4GHz with an 800MHz front-side bus (FSB) and offers 2MB of cache, which is adequate for simple tasks such as web browsing and document editing. In contrast, the i7-6700 offers faster clock speeds, with capabilities up to 4.0GHz, and a larger 8MB cache, significantly enhancing its performance for multitasking and demanding software.
Performance Comparison
When it comes to performance, the Intel Boxed Core i7-6700 stands out due to its advanced architecture and higher clock speed. The ability to turbo boost up to 4.0GHz allows the i7-6700 to handle more complex workloads efficiently, while the 8MB cache aids in faster data retrieval, making it ideal for gaming and professional applications.
In comparison, the Pentium 4 651’s 3.4GHz speed and 2MB cache may suffice for basic tasks but will struggle with modern applications that require more processing power. Users who need better performance and multitasking capabilities will find the i7-6700 a far superior option.
Compatibility and Support
The Intel Pentium 4 651 uses the LGA 775 socket, which is now quite outdated, limiting its compatibility with modern motherboards and components. This restriction can pose a challenge for users looking to upgrade their systems without replacing the entire motherboard.
On the other hand, the Intel Boxed Core i7-6700 uses the LGA 1151 socket and supports DDR4 and DDR3L memory. This compatibility with newer chipsets enhances its usability and upgradability, allowing users to build more modern systems that can accommodate the latest technologies.
Target Audience
The Intel Pentium 4 651 caters primarily to budget-conscious users who engage in light computing tasks. Its low price of C$49.99 makes it an attractive option for basic desktop setups, such as home or office PCs where high performance is not a requirement.
Conversely, the Intel Boxed Core i7-6700 is targeted toward gamers, content creators, and professionals who require robust computing performance. With a price of C$141.44, it is designed for users who need a processor that can handle intensive applications, multitasking, and gaming.
Heat and Power Efficiency
The Pentium 4 651 operates at a lower thermal design power (TDP) than the i7-6700, which may lead to better energy efficiency in simple tasks. However, the i7-6700 incorporates Intel Turbo Boost Technology, which optimises power usage by dynamically adjusting performance based on workload, potentially leading to better efficiency during heavier usage.
Users evaluating heat generation should consider their system's cooling solutions. While the Pentium 4 651 may generate less heat during light tasks, the i7-6700 is engineered for higher performance with effective cooling mechanisms, allowing it to sustain performance without overheating.
Price-to-Performance Ratio
At C$49.99, the Pentium 4 651 offers an attractive price point for entry-level users looking for a budget CPU. However, the value it provides is limited to basic computing needs, making its price-to-performance ratio less favourable in the context of modern demands.
The Intel Boxed Core i7-6700, while more expensive at C$141.44, provides a significantly higher performance output. For users who require a capable processor for gaming, video editing, or multitasking, the investment in the i7-6700 translates to better long-term value, as it can handle a wider range of tasks effectively.
Future-Proofing
In terms of future-proofing, the Intel Boxed Core i7-6700 is clearly the better option. Its contemporary architecture, LGA 1151 socket, and support for DDR4 memory position it well for upcoming software and hardware advancements.
The Pentium 4 651, with its older technology and limited support, is unlikely to meet future demands as software becomes more resource-intensive. Users considering longevity in their purchase should opt for the i7-6700 to ensure compatibility with future applications and technologies.
Which should you buy?
Ultimately, the choice between the Intel Pentium 4 651 and Intel Boxed Core i7-6700 hinges on your specific needs. If you require a basic processor for simple tasks and are on a tight budget, the Pentium 4 651 at C$49.99 may suffice. However, for users seeking robust performance, advanced capabilities, and future-proofing, the Intel Boxed Core i7-6700, priced at C$141.44, is the clear winner. Its superior performance, compatibility, and efficiency make it the better investment for anyone serious about their computing needs.
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