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Intel Core i3 i3-12100 Quad-core 3.30 GHz vs Intel Core i5-12400 Desktop Processor 18M Cache,

Updated August 2026 — Intel Core i3 i3-12100 Quad-core 3.30 GHz wins on power, Intel Core i5-12400 Desktop Processor 18M Cache, wins on performance and cache.

The Intel Core i5-12400 offers better performance and value for slightly less money compared to the i3-12100.

Why Intel Core i3 i3-12100 Quad-core 3.30 GHz is better

Price

i3 is slightly cheaper.

Base Clock

i3 has a higher base clock speed.

Power Efficiency

i3 is designed to use less power.

Why Intel Core i5-12400 Desktop Processor 18M Cache, is better

Turbo Boost

i5 has turbo boost capability.

Cache Size

i5 has a larger L3 cache.

Performance

i5 is better for demanding applications.

Overall score

Intel Core i3 i3-12100 Quad-core 3.30 GHz
78
Intel Core i5-12400 Desktop Processor 18M Cache,
85

Specifications

SpecIntel Core i3 i3-12100 Quad-core 3.30 GHzIntel Core i5-12400 Desktop Processor 18M Cache,
Base Clock3.30 GHz2.50 GHz
Turbo BoostN/Aup to 4.40 GHz
L3 Cache12 MB18 MB
GraphicsIntel UHD 730Intel UHD 730
Power ConsumptionN/A65W

Dimension comparison

Intel Core i3 i3-12100 Quad-core 3.30 GHzIntel Core i5-12400 Desktop Processor 18M Cache,

Overview of the Intel Core i3 and Intel Core i5

When comparing the Intel Core i3 and Intel Core i5 processors, the Intel Core i5-12400 is priced at $214.99, while the Intel Core i3-12100 comes in slightly higher at $215.90. This positions the i5 as about 0.4% cheaper than the i3, which may be advantageous for budget-conscious consumers seeking decent performance. Both processors belong to Intel's 12th generation lineup and promise high performance for demanding applications, making them suitable for a variety of uses.

Performance Capabilities

The Intel Core i5-12400 boasts a base clock speed of 2.50 GHz, with a turbo boost capability of up to 4.40 GHz. In contrast, the Intel Core i3-12100 operates at a steady 3.30 GHz. While the i3 has a higher base clock speed, the i5’s turbo boost feature allows it to potentially outperform the i3 during intensive tasks. This difference can be especially important for users engaged in gaming or heavy multitasking, where the extra power of the i5 can provide smoother performance.

Cache Size and Efficiency

The Intel Core i5-12400 features an 18 MB L3 cache, compared to the 12 MB cache of the Intel Core i3-12100. The larger cache size in the i5 allows for quicker data retrieval and processing, which can enhance overall performance in data-heavy applications. This makes the i5 more efficient at handling routine tasks, potentially leading to smoother operation in various workloads.

Graphics Performance

Both processors come equipped with the Intel UHD Graphics 730 controller, supporting up to four monitors. While both chips provide adequate graphical capabilities for everyday tasks and light gaming, they are not dedicated graphics solutions. Users requiring advanced graphical performance may need to consider dedicated graphics cards. However, for standard use, both the i3 and i5 should meet basic visual demands.

Power Consumption

The Intel Core i5-12400 has a base power consumption of 65W, which is standard for processors in its class. The Intel Core i3-12100 is designed to be efficient, using less power while still delivering performance. For users concerned about energy consumption, the i3 may be slightly advantageous due to its lower thermal design power (TDP), although exact TDP values are not specified for the i3 in the provided data.

Target Audience

The Intel Core i3 is an excellent choice for budget-conscious users looking for a reliable processor for everyday tasks like web browsing, office applications, and light gaming. The i5, on the other hand, targets gamers and productivity enthusiasts who need a more capable processor for demanding applications. This distinction makes the i5 a more attractive option for users who prioritize performance over cost.

Price Comparison

The Intel Core i3-12100 is priced at $215.90, while the Intel Core i5-12400 is available for $214.99. The price difference of just $0.91 makes the i5 a more appealing option for those who are looking for a balance between cost and performance. Over a typical 90-day observation period, the average price of the i5 has been noted at $221.65, which further emphasizes the i5's position as a better value for consumers seeking performance without significantly increasing their budget.

Which should you buy?

Choosing between the Intel Core i3-12100 and the Intel Core i5-12400 largely depends on your specific needs. If you're looking for a budget-friendly option for basic tasks, the i3 may suffice. However, if you require a processor that can handle more demanding applications and multitasking efficiently, the i5 is the better buy, especially given its slightly lower price point and superior performance capabilities.