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Intel Boxed Core I7-6700 FC-LGA14C 3.40 GHz 8 M Processor Cache 4 LGA 1151 BX806 vs Intel Core i5-9400 Desktop Processor 6 Cores 2. 90 GHz up to 4. 10 GHz Turbo LGA

Updated August 2026The Intel Boxed Core I7-6700 offers better single-thread performance and lower price, while the Intel Core i5-9400 excels in multitasking and integrated graphics.

The Intel Boxed Core I7-6700 offers better single-thread performance and lower price, while the Intel Core i5-9400 excels in multitasking and integrated graphics.

Why Intel Boxed Core I7-6700 FC-LGA14C 3.40 GHz 8 M Processor Cache 4 LGA 1151 BX806 is better

price

I7-6700 is cheaper at C$141.44

base frequency

I7-6700 has a base frequency of 3.40 GHz

cache size

I7-6700 features an 8 MB cache

Why Intel Core i5-9400 Desktop Processor 6 Cores 2. 90 GHz up to 4. 10 GHz Turbo LGA is better

core count

I5-9400 has 6 cores compared to 4

max turbo frequency

I5-9400 can reach 4.10 GHz

integrated graphics

I5-9400 includes Intel UHD Graphics 630

Overall score

Intel Boxed Core I7-6700 FC-LGA14C 3.40 GHz 8 M Processor Cache 4 LGA 1151 BX806
85
Intel Core i5-9400 Desktop Processor 6 Cores 2. 90 GHz up to 4. 10 GHz Turbo LGA
75

Specifications

SpecIntel Boxed Core I7-6700 FC-LGA14C 3.40 GHz 8 M Processor Cache 4 LGA 1151 BX806Intel Core i5-9400 Desktop Processor 6 Cores 2. 90 GHz up to 4. 10 GHz Turbo LGA
BrandIntelIntel
Cores46
Threads86
Base Clock3.40 GHz2.90 GHz
Max Clock4.00 GHz4.10 GHz
Cache8 MB9 MB

Dimension comparison

Intel Boxed Core I7-6700 FC-LGA14C 3.40 GHz 8 M Processor Cache 4 LGA 1151 BX806Intel Core i5-9400 Desktop Processor 6 Cores 2. 90 GHz up to 4. 10 GHz Turbo LGA

Overview of the Intel Boxed Core I7-6700 and Intel Core i5-9400

The Intel Boxed Core I7-6700 and Intel Core i5-9400 are two powerful CPU processors with distinct features and target audiences. The I7-6700 is priced at C$141.44, while the i5-9400 costs C$209.89. This price difference reflects the varying capabilities and intended uses of these processors, making it essential to compare their specifications and performance.

Performance Comparison

In terms of performance, the Intel Boxed Core I7-6700 boasts a base frequency of 3.40 GHz with the capability to reach up to 4.00 GHz thanks to Intel Turbo Boost Technology. This processor features an 8 MB cache, which can significantly enhance processing speed and efficiency during demanding tasks. In contrast, the Intel Core i5-9400 operates at a base frequency of 2.90 GHz, with a max turbo frequency of 4.10 GHz and a 9 MB cache. While the I5-9400 has a slightly higher maximum turbo frequency, the I7-6700's higher base frequency and cache size make it more suitable for intensive applications.

Core and Thread Count

When it comes to core and thread count, the Intel Boxed Core I7-6700 has 4 cores, while the Intel Core i5-9400 offers 6 cores and 6 threads. This difference can significantly influence multitasking capabilities and performance in multi-threaded applications. The additional cores of the I5-9400 allow it to handle more simultaneous processes, making it a better choice for users who engage in heavy multitasking or gaming. However, the I7-6700's superior single-thread performance may appeal to users focused on tasks that do not fully utilise multiple cores.

Compatibility with Motherboards

Compatibility is another crucial factor to consider. The Intel Boxed Core I7-6700 is designed for motherboards based on the Intel 100 Series chipset, while the Intel Core i5-9400 is compatible only with motherboards based on the Intel 300 Series chipset. This distinction can affect a user's choice depending on their existing hardware or future upgrade plans. Users with older systems may find the I7-6700 more appealing, while those looking to build new systems may prefer the flexibility offered by the I5-9400.

Graphics and Integrated Features

The Intel Core i5-9400 includes integrated Intel UHD Graphics 630, making it suitable for users who do not require a dedicated graphics card for light gaming or media consumption. The Intel Boxed Core I7-6700 does not specifically mention integrated graphics in its description, which may imply that users should pair it with a dedicated graphics solution. The presence of integrated graphics in the I5-9400 can be a significant advantage for budget-conscious users or those with simpler computing needs.

Memory Support

Both the Intel Boxed Core I7-6700 and Intel Core i5-9400 support DDR4 memory, but the I7-6700 also supports DDR3L memory. This additional compatibility may be appealing to users with existing DDR3L memory who are looking to upgrade without having to invest in new RAM. Users building new systems will likely prefer DDR4 options, making the I5-9400 more suitable for modern builds focused on performance and efficiency.

Price and Value Proposition

The price difference between the two processors is notable, with the Intel Boxed Core I7-6700 priced at C$141.44 and the Intel Core i5-9400 at C$209.89. While the I7-6700 offers a lower initial cost, the I5-9400 provides benefits in terms of core count and integrated graphics. For users seeking maximum performance per dollar, evaluating how each processor fits into their computing needs is critical. The additional investment in the I5-9400 may be justified for those who require more cores or integrated graphics capabilities.

User Scenarios

Choosing between the Intel Boxed Core I7-6700 and Intel Core i5-9400 largely depends on the user's specific needs. The I7-6700 is well-suited for individuals focused on applications that benefit from higher single-thread performance, while the I5-9400 is ideal for users who need more cores for multitasking and moderate gaming. Gamers or professionals working with multi-threaded applications would likely find the I5-9400 a better fit, while general users or those with legacy systems may prefer the I7-6700.

Which should you buy?

Ultimately, the decision between the Intel Boxed Core I7-6700 and Intel Core i5-9400 hinges on your specific use case and budget. If you are looking for a cost-effective solution with solid single-thread performance, the I7-6700 at C$141.44 is a great choice. However, if you seek better multitasking capabilities and integrated graphics, the I5-9400, priced at C$209.89, offers a compelling option. Consider your existing hardware and intended use to select the processor that best meets your needs.

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Intel Boxed Core I7-6700 FC-LGA14C 3.40 GHz 8 M Processor Cache 4 LGA 1151 BX806 vs Intel Core i5-9400 Desktop Processor 6 Cores 2. 90 GHz up to 4. 10 GHz Turbo LGA | versusfinder