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Intel Core Ultra 5 245KF desktop processor in LGA 1851 package

Intel

Intel Core Ultra 5 245KF BX80768245KF 14-Core desktop processor

SKU CH-D6WX-KWP1W MPN BX80768245KF

14-core Arrow Lake desktop CPU for LGA 1851 with 26 MB L2 and 24 MB L3 cache, up to 5.2 GHz turbo, DDR5-6400 support and 125 W base power

  • Product nameCore Ultra 5 245KF
  • CPU cores14-Core (6P+8E)
  • CPU socketLGA 1851
  • Maximum turbo clock5.2 GHz Performance-core Max Turbo Frequency: 5.2 GHz Effici
  • TDP rating125 W
  • Processor classDesktop

Model Core Ultra 5 245KF

  • 14 cores deliver strong multi-tasking performance with 6 performance and 8 efficient cores
  • 2 GHz max turbo frequency provides high single-thread speed for demanding workloads
  • 24 MB L3 cache and 26 MB L2 cache reduce latency for large data sets
  • DDR5 6400 MT/s dual-channel support enables fast memory throughput up to 256 GB
  • 3 nm TSMC N3B manufacturing improves power efficiency at 125 W base power

Core Ultra 5 245KF — 14-Core Desktop Processor

The Intel Core Ultra 5 245KF is a 14-core desktop processor built on the Arrow Lake architecture using TSMC N3B 3nm manufacturing. It features six performance cores and eight efficient cores with 14 threads total. Base frequencies are 4.2 GHz for P-cores and 3.6 GHz for E-cores, with maximum turbo reaching 5.2 GHz and 4.6 GHz respectively. It supports dual-channel DDR5 memory up to 6400 MT/s with a maximum capacity of 256 GB and fits the LGA 1851 socket with a 125W base power rating. No integrated graphics are included.

Who Should Choose This CPU

This processor suits builders who want high single-thread speed and strong multi-thread throughput for gaming, content creation, and AI-assisted workloads without integrated graphics overhead. The on-die NPU accelerates AI tasks while the 24 MB L3 and 26 MB L2 caches feed data-hungry applications. Users needing integrated display output or planning a compact low-power build should consider alternatives with integrated graphics or lower base power.

Platform Compatibility Checklist

Verify your motherboard uses the LGA 1851 socket and a chipset that supports Core Ultra Series 2 processors. Confirm the BIOS version includes support for Arrow Lake CPUs before installation. Ensure your CPU cooler is rated for at least 125W base power and clears the LGA 1851 retention mechanism. Check that your power supply delivers sufficient 12V current for the processor plus graphics card. Validate DDR5 memory kits are on the motherboard QVL for 6400 MT/s operation.

How it compares

Measured against everything we stock in Desktop Processors, at today’s prices. Recalculated every night.

Price $163.99
Typical for this category: the median of 494 items is $149.99.
CPU cores 14-Core (6P+8E)
Higher than about 65% of the 271 comparable items (median 8).
Maximum turbo clock 5.2 GHz Performance-core Max Turbo Frequency: 5.2 GHz Efficient-core Max Turbo Frequency: 4.6 GHz
Higher than about 70% of the 246 comparable items (median 4.7 GHz).

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Specifications

Product
Brand nameIntel
Product lineCore Ultra 5 (Series 2)
Model nameBX80768245KF
Product nameCore Ultra 5 245KF
Performance
Working frequencyPerformance-core Base Frequency: 4.2 GHz
Efficient-core Base Frequency: 3.6 GHz
Processor
CPU cores14-Core (6P+8E)
CPU socketLGA 1851
Maximum turbo clock5.2 GHz
Performance-core Max Turbo Frequency: 5.2 GHz
Efficient-core Max Turbo Frequency: 4.6 GHz
TDP rating125 W
Processor classDesktop
Processor codenameArrow Lake
CPU threads14-Threads
Level 2 cache26 MB
Level 3 cache24 MB
Process node3 nm (TSMC N3B)
CPU instruction set64-Bit
CPU socket scalability1S Only
Max PCIe lanes24
Memory
Supported memoryUp to DDR5 6400 MT/s
Channel configuration2
Memory limit256 GB
Graphics
Built-in graphicsNone Integrated Graphics
Ports & slots
PCIe generation5.0 / 4.0
Power
Maximum turbo power159 W
Size & build
Shipping weight0.09 kg
Package size127 × 114 × 51 mm
In the box
Included coolerNot included - Processor Only
More details
PCI express configurationsUp to 1 × 16+2 × 4, 2 × 8+2 × 4, 1 × 8+4 × 4

Other versions of this model

5 more in the same range

Questions about this item

What motherboard socket do I need for the Core Ultra 5 245KF?

The processor fits the LGA 1851 socket, so you need a motherboard built for that socket.

Will my existing DDR5-6400 memory run at its rated speed with this CPU?

The memory controller supports up to DDR5 6400 MT/s in dual-channel mode, so modules rated at that speed should operate at their rated frequency.

How can I verify the NPU is active after I build the system?

Open Task Manager and check the Performance tab for an NPU entry; driver installation will make the neural processing unit visible there.

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