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INTEL Core Ultra 9 285K 5.7GHz FCLGA18W vs Intel Core i9-9900KF 3.6 GHz Eight-Core LGA 1151 Processor

Updated August 2026The INTEL Core Ultra 9 285K offers superior performance and advanced technology, making it the better choice for enthusiasts. However, the Intel Core i9-9900KF provides solid performance at a more affordable price.

The INTEL Core Ultra 9 285K offers superior performance and advanced technology, making it the better choice for enthusiasts. However, the Intel Core i9-9900KF provides solid performance at a more affordable price.

Why INTEL Core Ultra 9 285K 5.7GHz FCLGA18W is better

higher clock speed

5.7GHz vs 3.6GHz base clock

latest technology

supports PCIe 5.0 and DDR5

performance focus

optimized for high-end gaming and creation

Why Intel Core i9-9900KF 3.6 GHz Eight-Core LGA 1151 Processor is better

lower price

£265.00 vs £475.00

included cooler

comes with a CPU cooler

good multi-core

8 cores and 16 threads for multitasking

Overall score

INTEL Core Ultra 9 285K 5.7GHz FCLGA18W
85
Intel Core i9-9900KF 3.6 GHz Eight-Core LGA 1151 Processor
70

Specifications

SpecINTEL Core Ultra 9 285K 5.7GHz FCLGA18WIntel Core i9-9900KF 3.6 GHz Eight-Core LGA 1151 Processor
Base Clock5.7GHz3.6GHz
Max TurboN/A5.0GHz
CoresN/A8
ThreadsN/A16
Power125WN/A
Memory SupportDDR5DDR4

Dimension comparison

INTEL Core Ultra 9 285K 5.7GHz FCLGA18WIntel Core i9-9900KF 3.6 GHz Eight-Core LGA 1151 Processor

Overview of the Products

In this comparison, we will be looking at two high-performance Intel processors: the INTEL Core Ultra 9 285K and the Intel Core i9-9900KF. The former is priced at £475.00 while the latter comes in at £265.00. Both processors are designed for demanding computing tasks, making them suitable for gamers and creators alike, but they possess distinct features that cater to different user needs.

Performance Capabilities

The INTEL Core Ultra 9 285K boasts a clock speed of 5.7GHz, significantly higher than the i9-9900KF's base speed of 3.6GHz and its maximum turbo frequency of 5.0GHz. This difference indicates that the Ultra 9 285K is engineered for superior performance, particularly in tasks requiring high processing power. With the Ultra 9, users can expect enhanced speed and efficiency, especially for resource-intensive applications like gaming and video editing.

Core and Thread Count

The Intel Core i9-9900KF features 8 cores and 16 threads, which is beneficial for multitasking and running multiple applications simultaneously. In contrast, the specifications for the INTEL Core Ultra 9 285K do not specify the core count, but it is implied to be optimised for enthusiast gamers and serious creators. While the exact core configuration of the Ultra 9 may not be outlined, its higher clock speed suggests a focus on peak performance rather than core count alone.

Architecture and Compatibility

The INTEL Core Ultra 9 285K is designed for the latest technologies, supporting both PCIe 5.0 and 4.0 as well as DDR5 memory. This compatibility ensures that users can take advantage of the most advanced hardware available, which is crucial for future-proofing a gaming or content creation setup. Meanwhile, the i9-9900KF is built on the older LGA 1151 socket and supports Dual-Channel DDR4 memory, meaning it lacks the latest advancements in processing technology found in the Ultra 9.

Thermal Design and Power Consumption

The INTEL Core Ultra 9 285K has a Processor Base Power of 125W, which reflects its high-performance capabilities. In comparison, the i9-9900KF does not explicitly list its power consumption in the available data but is generally known to operate within similar power limits. Users must consider the power requirements when building or upgrading systems, as higher power processors may necessitate more robust cooling solutions.

Included Components

The i9-9900KF comes with a CPU cooler included in the package, which can be a significant advantage for users looking to save on additional costs for cooling solutions. The INTEL Core Ultra 9 285K's package details do not mention any included cooling components, which could mean additional expenses for users who require adequate cooling for optimal performance. For those on a budget, the inclusion of a cooler with the i9-9900KF may sway the decision toward that model.

Target Audience

The INTEL Core Ultra 9 285K is tailored for enthusiasts who demand cutting-edge performance and are willing to invest in the latest technology. Its price tag of £475.00 reflects its positioning within the high-end market. On the other hand, the Intel Core i9-9900KF, priced at £265.00, appeals to a broader audience, including gamers and content creators who seek a reliable processor without breaking the bank. This difference in pricing highlights the Ultra 9's focus on premium performance.

Overall Value Proposition

When it comes to value, the i9-9900KF offers a compelling option for those prioritising affordability while still needing multi-core performance. At £265.00, it provides strong performance for its price, particularly for users who may not need the latest specifications. Conversely, the INTEL Core Ultra 9 285K, at £475.00, is a more significant investment aimed at users who require the best possible performance and are looking to future-proof their systems with the latest technology.

Which should you buy?

In conclusion, the choice between the INTEL Core Ultra 9 285K and the Intel Core i9-9900KF ultimately depends on your specific needs and budget. If you are seeking the latest technology and superior performance for high-end gaming or intensive creative tasks, the Ultra 9 is the way to go. However, if you are looking for a more budget-friendly option that still delivers solid performance, the i9-9900KF is a strong contender. Thus, your decision should align with your performance needs and financial considerations.

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INTEL Core Ultra 9 285K 5.7GHz FCLGA18W vs Intel Core i9-9900KF 3.6 GHz Eight-Core LGA 1151 Processor | versusfinder