Intel® Core™ Ultra 5 Desktop Processor 225 vs Intel Core i9-9900KF 3.6 GHz Eight-Core LGA 1151 Processor
Updated August 2026 — The Intel® Core™ Ultra 5 Desktop Processor 225 is a more budget-friendly option with modern features, while the Intel Core i9-9900KF offers superior performance for demanding tasks.
The Intel® Core™ Ultra 5 Desktop Processor 225 is a more budget-friendly option with modern features, while the Intel Core i9-9900KF offers superior performance for demanding tasks.
Why Intel® Core™ Ultra 5 Desktop Processor 225 is better
price
Ultra 5 is £154.99, cheaper than i9-9900KF at £265.00
power consumption
Ultra 5 operates at 65W, more energy-efficient
latest tech
Ultra 5 supports PCIe 5.0 and DDR5
Why Intel Core i9-9900KF 3.6 GHz Eight-Core LGA 1151 Processor is better
performance
i9-9900KF has 8 cores and 16 threads for better multitasking
clock speed
i9-9900KF has a maximum turbo frequency of 5.0 GHz
cache memory
i9-9900KF includes 16MB cache for enhanced performance
Overall score
Specifications
| Spec | Intel® Core™ Ultra 5 Desktop Processor 225 | Intel Core i9-9900KF 3.6 GHz Eight-Core LGA 1151 Processor |
|---|---|---|
| Cores | 6 | 8 |
| Threads | 8 | 16 |
| Clock Speed | 3.5 GHz | 3.6 GHz |
| Turbo Speed | 4.5 GHz | 5.0 GHz |
| Cache | N/A | 16MB |
Dimension comparison
Overview of the Intel® Core™ Ultra 5 Desktop Processor 225
The Intel® Core™ Ultra 5 Desktop Processor 225 is priced at £154.99, making it a more budget-friendly option compared to the Intel Core i9-9900KF, which costs £265.00. This significant price difference of £110.01 positions the Ultra 5 as an attractive choice for gamers and productivity enthusiasts seeking high performance without breaking the bank.
The Ultra 5 belongs to Intel's latest series of processors, optimised for gaming and productivity applications. It supports both PCIe 5.0 and 4.0, along with DDR5 memory, ensuring compatibility with the latest technologies. This processor also operates at a power consumption level of 65W, making it efficient for desktop setups.
Overview of the Intel Core i9-9900KF
The Intel Core i9-9900KF, priced at £265.00, is positioned as a high-end processor aimed at enthusiasts and professionals. It features a robust 3.6 GHz clock speed with the capability to boost up to 5.0 GHz, offering a significant performance edge in demanding applications.
This processor comes with 8 cores and 16 threads, making it well-suited for multitasking and heavy workloads. Additionally, it includes 16MB of cache memory, which can enhance performance in data-intensive tasks. The i9-9900KF also supports dual-channel DDR4-2666 memory and is compatible with Intel Optane memory, providing further optimisation for speed and efficiency.
Performance Comparison
In terms of performance, the Intel Core i9-9900KF is designed to outperform the Intel® Core™ Ultra 5 Desktop Processor 225 in multi-threaded tasks due to its additional cores and threads. The i9-9900KF's 8 cores and 16 threads allow it to handle more simultaneous processes, making it ideal for professional applications that require significant computing power.
On the other hand, the Ultra 5 is optimised for gaming, which often benefits from higher clock speeds and support for the latest memory technologies. While the Ultra 5 does not match the i9-9900KF in raw core count, its PCIe 5.0 support can provide advantages in gaming scenarios that utilise the latest graphics cards and technologies.
Gaming Capabilities
The Intel® Core™ Ultra 5 Desktop Processor 225 is specifically tailored for gaming, thanks to its optimised architecture and support for cutting-edge technologies like PCIe 5.0 and DDR5 memory. These features can directly enhance gaming experiences by providing faster data transfer rates and improved graphical performance.
Conversely, the Intel Core i9-9900KF, with its higher clock speeds and core count, also delivers excellent gaming performance. However, it may not leverage the latest PCIe 5.0 technology, as it is designed around the older LGA 1151 socket. As such, while both processors can handle gaming well, the Ultra 5 may offer better future-proofing for gamers looking to utilise the latest advancements in hardware.
Power Consumption and Efficiency
The Intel® Core™ Ultra 5 Desktop Processor 225 operates at a power consumption of 65W, making it a more energy-efficient choice compared to the Intel Core i9-9900KF. This lower power requirement can lead to reduced electricity bills and less heat generation, which is beneficial for users looking to maintain a quieter and cooler system.
In contrast, the i9-9900KF's higher performance comes with increased power demands, although specific power consumption figures for this model during peak performance are not detailed. Users may need to invest in more robust cooling solutions to manage the heat output effectively, especially during intensive tasks.
Compatibility and Future-Proofing
The Intel® Core™ Ultra 5 Desktop Processor 225 is compatible with the newer Intel 800 series chipsets, allowing users to build systems that leverage the latest technology. This compatibility is crucial for those looking to upgrade their systems in the near future without needing to replace the entire motherboard.
On the other hand, the Intel Core i9-9900KF is compatible with the older LGA 1151 socket and 9th generation motherboards. While it remains a powerful option, its older architecture may limit future upgrades compared to the Ultra 5, which is designed to support the latest advancements in computing technology.
Price-to-Performance Ratio
When evaluating price-to-performance ratios, the Intel® Core™ Ultra 5 Desktop Processor 225 offers a compelling option at £154.99. Considering its high-performance capabilities for gaming and productivity, it presents a strong value proposition for users who do not require the absolute highest specifications.
In comparison, the Intel Core i9-9900KF, while offering superior performance, comes at a higher price of £265.00. The additional cost may be justified for professionals needing the extra cores and threads, but for casual gamers and general users, the Ultra 5's cost-effectiveness makes it a more reasonable choice.
Which should you buy?
Choosing between the Intel® Core™ Ultra 5 Desktop Processor 225 and the Intel Core i9-9900KF ultimately depends on your specific needs and budget. If you are looking for an affordable, efficient processor that excels in gaming and supports the latest technologies, the Ultra 5 at £154.99 is a strong contender. However, if you require high-end performance for demanding workloads and multitasking capabilities, the i9-9900KF, despite its higher price of £265.00, may be the better option for you.
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