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Intel Ultra 5 250KF Plus 4.2GHz Processor 18 Cores for Socket 1851 Box
CPU Processors

Intel Ultra 5 250KF Plus 4.2GHz Processor 18 Cores for Socket 1851 Box

Key features:

  • Arrow Lake architecture (Series 2)
  • 18 next-generation cores
  • Maximum frequency up to 5.3 GHz
  • Integrated NPU for AI (22 TOPS)
  • Support for DDR5 up to 7200 MT/s
See full description

  • CPU Speed

    The speed at which the processor operates in everyday use.

    During the execution of demanding applications (e.g. games), the frequency may automatically increase up to the Maximum Processor Frequency.

  • Cores

    The natural individual processing units that the processor has. The more cores a processor has, the more efficient it is in running multiple applications simultaneously. For simple use, 4 cores are sufficient, while for gaming and video processing, at least 6 are recommended.

  • Socket

    The processor socket type.

    The motherboard we choose should have the same socket in order for the processor to "fit in".

  • Maximum CPU Speed

    The maximum processor frequency is the frequency that the processor can reach when executing demanding applications that use one core. Generally, when running demanding applications (e.g. games), the frequency can automatically increase up to the Maximum Processor Frequency depending on the number of cores in use. (the fewer cores are active, the closer they can operate to the maximum frequency)

  • Unlocked

    Ability to change the processor clock settings to achieve higher operating frequency (overclocking).

  • Cache Memory

    Cache is a very fast memory that acts as an intermediary between the processor and RAM. It stores data that is frequently useful to the processor for faster access.
  • See all
Product report

Description

Description

The Intel® Core™ Ultra 5 250KF PLUS (Series 2) belongs to the brand-new Arrow Lake processor family, designed to deliver top-tier performance in desktop systems. With an advanced 18-core hybrid architecture, support for ultra-high-speed DDR5 memory, and an integrated neural processing unit (NPU), it is the ideal foundation for gaming, content creation, and AI applications.

Note: The "KF" version does not include integrated graphics, so a dedicated graphics card is required.

  • 18-Core Hybrid Architecture: Combines 6 powerful performance cores (P-cores) for heavy workloads and gaming, with 12 energy-efficient cores (E-cores) for excellent multitasking.

  • AI Boost Technology (NPU): Features a dedicated AI processing unit (NPU) with 13 TOPS performance (22 TOPS total with the CPU), accelerating artificial intelligence applications and fully supporting Windows Studio Effects.

  • Cutting-Edge Design: Based on TSMC N3B lithography, it delivers top-tier power efficiency and lower temperatures.

  • Intel® Thread Director: An intelligent controller automatically distributes tasks to the appropriate cores, ensuring the system never slows down.

Performance & Frequencies

  • Total Cores: 18 (6 Performance-cores / 12 Efficient-cores)
  • Total Threads: 18 (Hyper-Threading not supported)
  • Max Frequency (Max Turbo): Up to 5.3 GHz
  • Turbo Frequency (P-Cores / E-Cores): 5.3 GHz / 4.6 GHz
  • Base Frequency (P-Cores / E-Cores): 4.2 GHz / 3.3 GHz

Cache Memory & Power

  • Intel® Smart Cache (L3): 30 MB
  • Total L2 Cache: 30 MB
  • Base Power: 125 W
  • Maximum Turbo Power: 159 W
  • Maximum Operating Temperature: 105 °C

RAM Memory & Expansion

  • Memory Type: DDR5 (up to 7200 MT/s)
  • Maximum RAM Capacity: 256 GB
  • Memory Channels: 2 (Dual Channel)
  • PCI Express Support: PCIe® 5.0 and 4.0 (up to 24 lanes total)
  • Supported Socket: FCLGA1851

Advanced Technologies & Security

  • Artificial Intelligence: Intel® Deep Learning Boost, OpenVINO™, WindowsML, DirectML, ONNX RT
  • Security: Intel® Boot Guard, OS Guard, Threat Detection Technology (TDT), Control-Flow Enforcement (CET)
  • Integrated Graphics: No (Discrete Graphics Card Required)

Manufacturer

Manufacturer Details

Warnings & Safety Information
See full description

Specifications

Specifications

Main Specifications

Year of Release
2026
Family
Ultra 5
Microarchitecture
Arrow Lake

Microarchitecture

The code name of the generation and internal organization of the processor. A common indicative element is the nanometers (nm) of the microarchitecture; the smaller, the better. The latest and most recent generation of Intel, named Arrow Lake, includes the “Core Ultra” models without the "i" prefix. The latest and most recent generation of AMD is Zen 5.
Socket
1851

Socket

The processor socket type.

The motherboard we choose should have the same socket in order for the processor to "fit in".
Packaging
Box

Packaging

Box

As a rule, they are accompanied by a manufacturer's cooler and fan.
Compatible Chipset
-
Type
Middle Range

Performance

Cores
18

Cores

The natural individual processing units that the processor has. The more cores a processor has, the more efficient it is in running multiple applications simultaneously. For simple use, 4 cores are sufficient, while for gaming and video processing, at least 6 are recommended.
Threads
18

Threads

Threads are virtual versions of processor cores. They allow the processor to serve multiple tasks in parallel.
Processor Frequency (Base Frequency)
4.2 GHz

Processor Frequency (Base Frequency)

The speed at which the processor operates in everyday use.

During the execution of demanding applications (e.g. games), the frequency may automatically increase up to the Maximum Processor Frequency.
Max Processor Frequency
5.3 GHz

Max Processor Frequency

The maximum processor frequency is the frequency that the processor can reach when executing demanding applications that use one core. Generally, when running demanding applications (e.g. games), the frequency can automatically increase up to the Maximum Processor Frequency depending on the number of cores in use. (the fewer cores are active, the closer they can operate to the maximum frequency)
Cache memory
30 MB

Cache memory

Cache is a very fast memory that acts as an intermediary between the processor and RAM. It stores data that is frequently useful to the processor for faster access.
Unlocked
Yes

Unlocked

Ability to change the processor clock settings to achieve higher operating frequency (overclocking).

Features & Functions

Includes Heatsink
No

Includes Heatsink


The processor requires cooling in order to operate. If the processor does not come with a heatsink, you will need to purchase a suitable CPU heatsink or a separate water cooling system.

Important information

Specifications are collected from official manufacturer websites. Please verify the specifications before proceeding with your final purchase. If you notice any problem you can report it here.

See all specifications

Reviews (1)

Reviews

5.0
1
5.0
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  1. 1
  2. 4 stars
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  3. 3 stars
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  4. 2 stars
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  5. 1 star
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Review this product
  • 5
    chriskarta

    Verified purchase

    It is well worth its money and more.

    Translated from Greek ·
    Did you find this review helpful?

Description & Specifications

The Intel® Core™ Ultra 5 250KF PLUS (Series 2) belongs to the brand-new Arrow Lake processor family, designed to deliver top-tier performance in desktop systems. With an advanced 18-core hybrid architecture, support for ultra-high-speed DDR5 memory, and an integrated neural processing unit (NPU), it is the ideal foundation for gaming, content creation, and AI applications.

Note: The "KF" version does not include integrated graphics, so a dedicated graphics card is required.

  • 18-Core Hybrid Architecture: Combines 6 powerful performance cores (P-cores) for heavy workloads and gaming, with 12 energy-efficient cores (E-cores) for excellent multitasking.

  • AI Boost Technology (NPU): Features a dedicated AI processing unit (NPU) with 13 TOPS performance (22 TOPS total with the CPU), accelerating artificial intelligence applications and fully supporting Windows Studio Effects.

  • Cutting-Edge Design: Based on TSMC N3B lithography, it delivers top-tier power efficiency and lower temperatures.

  • Intel® Thread Director: An intelligent controller automatically distributes tasks to the appropriate cores, ensuring the system never slows down.

Performance & Frequencies

  • Total Cores: 18 (6 Performance-cores / 12 Efficient-cores)
  • Total Threads: 18 (Hyper-Threading not supported)
  • Max Frequency (Max Turbo): Up to 5.3 GHz
  • Turbo Frequency (P-Cores / E-Cores): 5.3 GHz / 4.6 GHz
  • Base Frequency (P-Cores / E-Cores): 4.2 GHz / 3.3 GHz

Cache Memory & Power

  • Intel® Smart Cache (L3): 30 MB
  • Total L2 Cache: 30 MB
  • Base Power: 125 W
  • Maximum Turbo Power: 159 W
  • Maximum Operating Temperature: 105 °C

RAM Memory & Expansion

  • Memory Type: DDR5 (up to 7200 MT/s)
  • Maximum RAM Capacity: 256 GB
  • Memory Channels: 2 (Dual Channel)
  • PCI Express Support: PCIe® 5.0 and 4.0 (up to 24 lanes total)
  • Supported Socket: FCLGA1851

Advanced Technologies & Security

  • Artificial Intelligence: Intel® Deep Learning Boost, OpenVINO™, WindowsML, DirectML, ONNX RT
  • Security: Intel® Boot Guard, OS Guard, Threat Detection Technology (TDT), Control-Flow Enforcement (CET)
  • Integrated Graphics: No (Discrete Graphics Card Required)

Manufacturer

Manufacturer Details

Warnings & Safety Information

Main Specifications

Year of Release
2026
Family
Ultra 5
Microarchitecture
Arrow Lake

Microarchitecture

The code name of the generation and internal organization of the processor. A common indicative element is the nanometers (nm) of the microarchitecture; the smaller, the better. The latest and most recent generation of Intel, named Arrow Lake, includes the “Core Ultra” models without the "i" prefix. The latest and most recent generation of AMD is Zen 5.
Socket
1851

Socket

The processor socket type.

The motherboard we choose should have the same socket in order for the processor to "fit in".
Packaging
Box

Packaging

Box

As a rule, they are accompanied by a manufacturer's cooler and fan.
Compatible Chipset
-
Type
Middle Range

Performance

Cores
18

Cores

The natural individual processing units that the processor has. The more cores a processor has, the more efficient it is in running multiple applications simultaneously. For simple use, 4 cores are sufficient, while for gaming and video processing, at least 6 are recommended.
Threads
18

Threads

Threads are virtual versions of processor cores. They allow the processor to serve multiple tasks in parallel.
Processor Frequency (Base Frequency)
4.2 GHz

Processor Frequency (Base Frequency)

The speed at which the processor operates in everyday use.

During the execution of demanding applications (e.g. games), the frequency may automatically increase up to the Maximum Processor Frequency.
Max Processor Frequency
5.3 GHz

Max Processor Frequency

The maximum processor frequency is the frequency that the processor can reach when executing demanding applications that use one core. Generally, when running demanding applications (e.g. games), the frequency can automatically increase up to the Maximum Processor Frequency depending on the number of cores in use. (the fewer cores are active, the closer they can operate to the maximum frequency)
Cache memory
30 MB

Cache memory

Cache is a very fast memory that acts as an intermediary between the processor and RAM. It stores data that is frequently useful to the processor for faster access.
Unlocked
Yes

Unlocked

Ability to change the processor clock settings to achieve higher operating frequency (overclocking).

Features & Functions

Includes Heatsink
No

Includes Heatsink


The processor requires cooling in order to operate. If the processor does not come with a heatsink, you will need to purchase a suitable CPU heatsink or a separate water cooling system.

Important information

Specifications are collected from official manufacturer websites. Please verify the specifications before proceeding with your final purchase. If you notice any problem you can report it here.

Reviews (1)

5.0
1
5.0
Review this product
  1. 1
  2. 4 stars
    0
  3. 3 stars
    0
  4. 2 stars
    0
  5. 1 star
    0
Review this product
  • 5
    chriskarta

    Verified purchase

    It is well worth its money and more.

    Translated from Greek ·
    Did you find this review helpful?
211,00 €
14,00 €   shipping cost