Intel Core i3 i3-12100 Quad-core 3.30 GHz vs Intel Core i7-8700K Desktop Processor 6 Cores up
Updated August 2026 — Intel Core i3 i3-12100 Quad-core 3.30 GHz wins on power and compatibility, Intel Core i7-8700K Desktop Processor 6 Cores up wins on cores and threads.
The Intel Core i7-8700K offers superior performance for demanding applications compared to the Intel Core i3. It is the better choice for gamers and professionals.
Why Intel Core i3 i3-12100 Quad-core 3.30 GHz is better
Price
Intel Core i3 is more affordable.
Power Efficiency
Intel Core i3 is designed for low energy consumption.
Compatibility
Intel Core i3 fits into a wider range of motherboards.
Why Intel Core i7-8700K Desktop Processor 6 Cores up is better
Performance
Intel Core i7-8700K has higher clock speed and more cores.
Graphics
Intel Core i7-8700K has better integrated graphics.
Cache Efficiency
Intel Core i7-8700K benefits from more cores with the same cache size.
Overall score
Specifications
| Spec | Intel Core i3 i3-12100 Quad-core 3.30 GHz | Intel Core i7-8700K Desktop Processor 6 Cores up |
|---|---|---|
| Brand | Intel | Intel |
| Model | i3-12100 | i7-8700K |
| Threads | 8 | 12 |
| Turbo Boost | No | Yes |
| Integrated GPU | UHD 730 | UHD 630 |
Dimension comparison
Overview of Intel Core i3 and Intel Core i7-8700K
The Intel Core i3 is priced at $215.90, while the Intel Core i7-8700K is slightly cheaper at $185.37. This represents a price difference of about 14%, making the i7-8700K the more economical option. However, the price alone does not define their overall value and performance; each processor targets different user needs and applications.
Performance Comparison
The Intel Core i3 operates at 3.30 GHz with 4 cores, making it suitable for basic computing tasks and light gaming. In contrast, the Intel Core i7-8700K boasts 6 cores and a maximum turbo frequency of 4.70 GHz, providing superior performance for demanding applications, including gaming and content creation. The additional cores and higher clock speed of the i7-8700K allow for better multitasking and processing power, appealing to users who require more from their CPU.
Graphics Capabilities
Both processors come equipped with integrated graphics, but they differ significantly in performance. The Intel Core i3 features Intel UHD Graphics 730, while the i7-8700K is equipped with Intel UHD Graphics 630. While both graphics units support high-definition output, the i7-8700K’s graphics are generally better suited for gaming and graphic-intensive tasks, making it a more robust choice for multimedia applications.
Cache Size and Efficiency
Cache size plays a crucial role in a processor's performance. The Intel Core i3 has a 12 MB L3 cache, which helps improve data retrieval speeds for frequently used information, leading to better system performance. On the other hand, the i7-8700K also features a 12 MB cache but benefits from its higher core count, providing enhanced efficiency when dealing with multiple tasks. The larger cache combined with more cores in the i7-8700K results in significantly improved performance in complex applications.
Power Consumption
The Intel Core i3 is designed to be power-efficient, catering to users who prioritize low energy consumption. The i7-8700K has a thermal design power (TDP) of 95W, which is typical for higher-performance processors. Users should consider their power supply and cooling solutions, especially if they plan to push the i7-8700K to its limits, as it may require more robust cooling compared to the more efficient i3.
Compatibility with Motherboards
Compatibility is another essential factor when choosing a processor. The Intel Core i3 can fit into a variety of modern motherboards, ensuring flexibility for users who may not have the latest hardware. However, the Intel Core i7-8700K is specifically compatible with motherboards based on Intel's 300 Series chipsets. This may limit options for upgrades or replacements in older builds, making the i3 a more versatile choice for varied setups.
Target Audience
The Intel Core i3 is ideal for casual users who engage in everyday computing tasks such as web browsing, document editing, and streaming. Its affordability and efficiency make it a great choice for budget-conscious consumers. Conversely, the Intel Core i7-8700K targets gamers and professionals who require more power for tasks like video editing, gaming at high settings, and running multiple applications simultaneously. The increased cores and processing speed justify its higher price for those who need it.
Which should you buy?
In conclusion, the choice between the Intel Core i3 and Intel Core i7-8700K ultimately depends on your specific requirements. If you are a casual user looking for a budget-friendly option that handles everyday tasks efficiently, the Intel Core i3 at $215.90 is a solid choice. However, if you're a gamer or a professional needing a processor capable of handling intensive applications, the Intel Core i7-8700K at $185.37 offers superior performance, making it worth the investment.

