Intel® Core™ Ultra 5 Processor 250K Plus 18 cores vs Intel Core i7-7700K Kaby Lake Quad-Core Processor
Updated August 2026 — The Intel® Core™ Ultra 5 Processor 250K Plus outperforms the Intel Core i7-7700K in several key areas, making it the better choice for high-performance needs.
The Intel® Core™ Ultra 5 Processor 250K Plus outperforms the Intel Core i7-7700K in several key areas, making it the better choice for high-performance needs.
Why Intel® Core™ Ultra 5 Processor 250K Plus 18 cores is better
Core Count
Ultra 5 has 24 cores vs i7's 4 cores
Clock Speed
Ultra 5 boosts to 5.5 GHz vs i7's 4.5 GHz
Future-Proofing
Ultra 5 supports PCIe 5.0 and DDR5
Why Intel Core i7-7700K Kaby Lake Quad-Core Processor is better
Price
i7 is cheaper at C$306.66
Simplicity
i7 is sufficient for basic tasks
Availability
i7 has been on the market longer
Overall score
Specifications
| Spec | Intel® Core™ Ultra 5 Processor 250K Plus 18 cores | Intel Core i7-7700K Kaby Lake Quad-Core Processor |
|---|---|---|
| Brand | Intel | Intel |
| Max Turbo | 5.5 GHz | 4.5 GHz |
| Base Power | 125W | 91W |
| Socket Type | LGA1851 | LGA1151 |
| Memory Support | DDR5 | DDR4 |
Dimension comparison
Price Comparison
The Intel® Core™ Ultra 5 Processor 250K Plus is priced at C$332.99, while the Intel Core i7-7700K Kaby Lake Quad-Core Processor comes in slightly lower at C$306.66. Although the price difference is relatively small, the Ultra 5 offers more advanced technology, which may justify its higher cost. If budget is your primary concern, the i7-7700K might be the better choice. However, for those seeking cutting-edge performance, the Ultra 5 presents a compelling case for the additional investment.
Core Configuration
The Intel® Core™ Ultra 5 Processor 250K Plus features an impressive configuration with up to 24 cores, consisting of 8 Performance cores (P-cores) and 16 Efficient cores (E-cores). In contrast, the Intel Core i7-7700K is equipped with a traditional quad-core setup. This stark difference in core count means that the Ultra 5 is better suited for demanding applications, multitasking, and gaming. Users can expect significantly enhanced performance and responsiveness from the Ultra 5, particularly in resource-intensive tasks.
Clock Speed and Performance
The Intel® Core™ Ultra 5 Processor 250K Plus boasts an ultra-fast boost clock reaching up to 5.5 GHz. This high turbo frequency is designed to deliver top-tier performance for gaming and productivity applications. On the other hand, the Intel Core i7-7700K can reach a maximum clock speed of 4.50 GHz. While the i7-7700K is still a capable processor, the Ultra 5’s higher clock speed allows it to handle tasks with greater efficiency and speed, making it a more suitable option for enthusiasts and professionals alike.
Architecture and Technology
The Intel® Core™ Ultra 5 Processor 250K Plus is built on a next-generation platform that supports PCIe 5.0 and DDR5 memory, allowing for faster data transfer rates and improved system responsiveness. This modern architecture is compatible with Intel 800 Series Chipset-based motherboards. In comparison, the Intel Core i7-7700K uses older technology, supporting only DDR4 memory and PCIe 3.0. This technological disparity means that the Ultra 5 is not only more future-proof but also delivers superior performance in current applications.
Overclocking Potential
For those interested in performance tuning, the Intel® Core™ Ultra 5 Processor 250K Plus is unlocked for overclocking when paired with Intel Z-series chipsets. This feature allows power users to push the processor beyond its base specifications for enhanced performance. Conversely, while the Intel Core i7-7700K is also unlocked, its older architecture may limit the extent of potential gains. As a result, the Ultra 5 offers a more robust platform for enthusiasts looking to maximize their system's performance.
Thermal Design
The Intel® Core™ Ultra 5 Processor 250K Plus is engineered with a robust thermal design, featuring a base power of 125W and a maximum turbo power of 250W. This design supports sustained high-intensity workloads without overheating. In comparison, the Intel Core i7-7700K has a lower thermal design power, which is adequate but may not sustain performance under extreme loads as effectively as the Ultra 5. Therefore, users engaging in intensive tasks may find the Ultra 5 to be a more reliable option.
Compatibility and Future-Proofing
The Intel® Core™ Ultra 5 Processor 250K Plus is designed to be compatible with the latest Intel 800 Series Chipset-based motherboards, ensuring that users can take full advantage of its advanced features. The support for PCIe 5.0 and DDR5 memory also positions it as a more future-proof choice. In contrast, the Intel Core i7-7700K is limited to older motherboards and technologies, which may require users to upgrade their systems sooner to keep up with evolving software and hardware demands.
Which should you buy?
In conclusion, the decision between the Intel® Core™ Ultra 5 Processor 250K Plus and the Intel Core i7-7700K comes down to your specific needs and budget. If you are looking for cutting-edge performance, high core counts, and future-proofing capabilities, the Ultra 5 is clearly the superior option at C$332.99. However, if you are on a tighter budget and primarily engage in less demanding tasks, the i7-7700K at C$306.66 remains a solid choice. Ultimately, your choice should reflect your computing requirements and how much you are willing to invest for enhanced performance.
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