Intel Core i5-12400 Desktop Processor 18M Cache, vs Intel® Core™ Ultra 9 Desktop Processor 285 24
Updated August 2026 — Intel Core i5-12400 Desktop Processor 18M Cache, wins on graphics and compatibility, Intel® Core™ Ultra 9 Desktop Processor 285 24 wins on cache and performance.
The Intel Core Ultra 9 offers superior performance for demanding tasks, while the i5-12400 is a more budget-friendly option for everyday use.
Why Intel Core i5-12400 Desktop Processor 18M Cache, is better
Price
i5-12400 is significantly cheaper
Power Consumption
Both have the same base power
Basic Graphics
i5-12400 has decent integrated graphics
Why Intel® Core™ Ultra 9 Desktop Processor 285 24 is better
Performance
Ultra 9 has more cores and higher clock speed
Cache Size
Ultra 9 has a larger cache
Architecture
Ultra 9 uses a performance hybrid architecture
Overall score
Specifications
| Spec | Intel Core i5-12400 Desktop Processor 18M Cache, | Intel® Core™ Ultra 9 Desktop Processor 285 24 |
|---|---|---|
| Cores | 6 | 24 |
| Max Speed | 4.40 GHz | 5.6 GHz |
| Cache Size | 18 MB | 40 MB |
| Integrated Graphics | UHD 730 | Included |
| Socket | LGA-1700 | 800 Series |
Dimension comparison
Overview
In this comparison, we will examine the Intel Core i5-12400 Desktop Processor and the Intel Core Ultra 9 Desktop Processor 285. The i5-12400 is priced at $214.99, making it about 62% cheaper than the Ultra 9, which retails for $569.91. This price difference highlights the varying target segments of these processors, with the i5-12400 aimed at mainstream users and the Ultra 9 catering to enthusiasts and professionals requiring higher performance.
Performance
The Intel Core Ultra 9 Desktop Processor 285 boasts a significant performance advantage with its 24 cores, comprising 8 P-cores and 16 E-cores, and can reach speeds of up to 5.6 GHz. In contrast, the Intel Core i5-12400 features 6 cores and a maximum speed of 4.40 GHz. This difference in core count and clock speed makes the Ultra 9 a superior choice for demanding applications, particularly for gaming and content creation. The i5-12400, while still capable, is best suited for general tasks and light gaming.
Architecture
The Ultra 9 utilizes a performance hybrid architecture that optimally distributes workloads across its cores, enhancing efficiency and speed. This design enables it to handle multi-threaded applications more effectively than the i5-12400, which, despite its hyper-threading capability, has fewer cores. The i5-12400, however, still offers solid performance with its hyper-threading architecture and is ideal for users focused on everyday computing tasks.
Cache and Memory
The Ultra 9 features a substantial 40 MB cache, which aids in faster data retrieval and processing for intensive tasks. In comparison, the i5-12400 has an 18 MB L3 cache, which is sufficient for typical applications but may not be as efficient under heavy load conditions. This difference in cache size can lead to noticeable performance variations, especially in applications that rely heavily on data caching.
Graphics
Integrated graphics capabilities differ between the two processors. The i5-12400 includes Intel UHD Graphics 730, which supports up to four monitors and provides decent performance for basic gaming and multimedia tasks. However, the Ultra 9 also includes integrated graphics, but its focus remains on performance, implying that users should consider dedicated graphics solutions for optimal performance in gaming or graphic-intensive applications.
Power Consumption
Both processors have a base power consumption of 65W, making them relatively energy-efficient for their performance levels. This consistency in power requirements means that users won't need to factor in significantly different cooling solutions or power supplies. However, the Ultra 9’s higher performance capabilities may lead to increased power draw under load, depending on the specific use case.
Compatibility
When it comes to motherboard compatibility, the i5-12400 is designed for Intel’s 600 Series chipset, while the Ultra 9 requires an Intel 800 Series chipset. This distinction may influence buyers based on their existing hardware or upgrade plans. Users looking to build a new system should ensure they select a compatible motherboard for their chosen processor.
Price
The price difference between the two processors is substantial, with the i5-12400 priced at $214.99 and the Ultra 9 at $569.91. This makes the Ultra 9 about 165% more expensive than the i5-12400. For budget-conscious consumers or those who do not require extreme processing power, the i5-12400 presents a far more economical choice. Conversely, for enthusiasts or professionals demanding top-tier performance, the Ultra 9 justifies its higher price with its advanced features.
Which should you buy?
Ultimately, the decision between the Intel Core i5-12400 and the Intel Core Ultra 9 Desktop Processor 285 hinges on your specific needs and budget. If you are a casual user or a gamer with moderate demands, the i5-12400, priced at $214.99, offers excellent value and solid performance for everyday tasks. However, if you are an enthusiast, content creator, or gamer requiring top-notch performance, the Ultra 9, despite its higher price at $569.91, provides unparalleled processing capabilities that can handle the most demanding applications.