Intel Boxed Core I7-6700 FC-LGA14C 3.40 GHz 8 M vs Intel Core i5-12400 Desktop Processor 18M Cache,
Updated August 2026 — Intel Boxed Core I7-6700 FC-LGA14C 3.40 GHz 8 M wins on price, Intel Core i5-12400 Desktop Processor 18M Cache, wins on performance and graphics.
The Intel Core i5-12400 offers better performance and future-proofing, while the Intel i7-6700 is a budget-friendly option for general use.
Why Intel Boxed Core I7-6700 FC-LGA14C 3.40 GHz 8 M is better
Price
I7-6700 is significantly cheaper.
Single-thread
I7-6700 has a higher base clock speed.
General use
I7-6700 is suitable for moderate gaming.
Why Intel Core i5-12400 Desktop Processor 18M Cache, is better
Performance
I5-12400 excels in demanding applications.
Cache
I5-12400 has a larger 18 MB L3 cache.
Future-proof
I5-12400 supports newer DDR5 memory.
Overall score
Specifications
| Spec | Intel Boxed Core I7-6700 FC-LGA14C 3.40 GHz 8 M | Intel Core i5-12400 Desktop Processor 18M Cache, |
|---|---|---|
| Base Speed | 3.40 GHz | 2.50 GHz |
| Turbo Speed | N/A | 4.40 GHz |
| Cache Size | 8 MB | 18 MB |
| Memory Support | DDR4 & DDR3L | DDR5 & DDR4 |
| Integrated GPU | N/A | Intel UHD 730 |
Dimension comparison
Overview of the Processors
In this comparison, we are looking at the Intel Boxed Core I7-6700 and the Intel Core i5-12400. The I7-6700 is priced at $96.99, while the I5-12400 comes in at $214.99, making the I7-6700 about 55% cheaper than its counterpart. This significant price difference raises questions about the performance and features of each processor.
Performance Capabilities
The Intel Core I5-12400 boasts a base clock speed of 2.50 GHz and can reach up to 4.40 GHz with turbo boost capabilities. In comparison, the Intel I7-6700 operates at a base frequency of 3.40 GHz, without specifying a turbo boost clock speed. This difference in base clock speed indicates that the I7-6700 may deliver better performance in single-threaded tasks, while the I5-12400’s higher turbo boost suggests it could excel in more demanding applications.
Cache and Memory Support
The I7-6700 includes an 8 MB processor cache, which supports efficient data handling for everyday tasks. In contrast, the I5-12400 features a larger 18 MB L3 cache, allowing it to process routine data more swiftly and smoothly. This difference could mean the I5-12400 is better suited for multitasking and handling applications requiring larger data sets, despite the I7-6700's potentially higher performance in specific scenarios.
Compatibility and Socket
The I7-6700 is compatible with the LGA 1151 socket and supports both DDR4 and DDR3L memory types. Conversely, the I5-12400 utilizes the newer LGA-1700 socket and supports the more advanced DDR5 and DDR4 memory types. This modern socket compatibility with the I5-12400 may provide better future-proofing for users looking to upgrade their systems, while the I7-6700’s older socket may limit upgrade options.
Integrated Graphics
The I5-12400 features built-in Intel UHD Graphics 730, which promises improved graphics and visual quality, supporting up to four monitors. The I7-6700 does not specify integrated graphics capabilities in the provided data. For users who require decent graphics performance without a dedicated graphics card, the I5-12400 is clearly the superior choice, enhancing its appeal for casual gamers and multimedia users.
Power Consumption
The Intel Core I5-12400 has a base power consumption of 65W, making it a more energy-efficient option compared to the I7-6700, which does not specify its power requirements in the data. Lower power consumption can lead to reduced energy costs and less heat generation, making the I5-12400 a more environmentally friendly choice in the long run.
Pricing and Value
The Intel I7-6700 is priced at $96.99, which is significantly lower than the I5-12400’s price of $214.99. This means the I7-6700 is about 55% less expensive. For users on a budget or those who do not need the latest technology, the I7-6700 offers an attractive value proposition. However, the I5-12400’s advanced features and higher performance may justify its higher price for those who require cutting-edge capabilities.
User Experience and Applications
The I7-6700 is marketed as a processor that enhances productivity, creativity, and gaming experiences, making it suitable for general use and moderate gaming. The I5-12400, on the other hand, is optimized for gamers and productivity, with features like hyper-threading that enhance performance in demanding applications. Users focused on intense gaming or professional tasks may find the I5-12400 more aligned with their needs.
Which should you buy?
Ultimately, choosing between the Intel Boxed Core I7-6700 and the Intel Core I5-12400 comes down to your specific needs and budget. If you are looking for a cost-effective option for general computing and moderate gaming, the I7-6700 at $96.99 may be the right choice. However, if you require a processor that can handle more demanding applications and offers better future-proofing with newer technology, the I5-12400, despite its higher price of $214.99, may be worth the investment.

