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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

  • Processors TypeDesktop
  • NameCore Ultra 5 245KF
  • CPU Socket TypeLGA 1851
  • Core NameArrow Lake
  • # of Cores14-Core (6P+8E)
  • # of Threads14-Threads

Options 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.

Highlights

  • 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

Specifications

BrandIntel
Processors TypeDesktop
SeriesCore Ultra 5 (Series 2)
NameCore Ultra 5 245KF
ModelBX80768245KF
CPU Socket TypeLGA 1851
Core NameArrow Lake
# of Cores14-Core (6P+8E)
# of Threads14-Threads
Operating FrequencyPerformance-core Base Frequency: 4.2 GHz
Efficient-core Base Frequency: 3.6 GHz
Max Turbo FrequencyMax Turbo Frequency: 5.2 GHz
Performance-core Max Turbo Frequency: 5.2 GHz
Efficient-core Max Turbo Frequency: 4.6 GHz
L2 Cache26MB
L3 Cache24MB
Manufacturing Tech3nm (TSMC N3B)
Instruction Set64-Bit
Memory TypesUp to DDR5 6400 MT/s
Memory Channel2
Max Memory Size256 GB
Integrated GraphicsNone Integrated Graphics
Scalability1S Only
PCI Express Revision5.0 / 4.0
PCI Express ConfigurationsUp to 1x16+2x4, 2x8+2x4, 1x8+4x4
Max Number of PCI Express Lanes24
Thermal Design Power125W
Max Turbo Power159W
Cooling DeviceCooling device not included - Processor Only
Advanced TechnologiesIntel Gaussian & Neural Accelerator: 3.5
Intel Thread Director: Yes
Intel Speed Shift Technology: Yes
Intel Turbo Boost Technology: 2.0
Intel Hyper-Threading Technology: No
Intel 64: Yes
Instruction Set: 64-bit
Instruction Set Extensions: Intel SSE4.1, Intel SSE4.2, Intel AVX2
Idle States: Yes
Enhanced Intel SpeedStep Technology: Yes
Thermal Monitoring Technologies: Yes
Intel Volume Management Device (VMD): Yes
Security & ReliabilityIntel Threat Detection Technology (TDT): Yes
Intel Active Management Technology (AMT): No
Intel Standard Manageability (ISM): Yes
Intel Remote Platform Erase (RPE): No
Intel One-Click Recovery: No
Intel Secure Key: Yes
Intel Control-Flow Enforcement Technology: Yes
Intel Total Memory Encryption - Multi Key: No
Intel AES New Instructions: Yes
Intel Trusted Execution Technology: Yes
Execute Disable Bit: Yes
Intel OS Guard: Yes
Intel Boot Guard: Yes
Mode-based Execute Control (MBEC): Yes
Intel Stable IT Platform Program (SIPP): No
Intel Virtualization Technology with Redirect Protection
Shipping weight0.09 kg
Package size127 × 114 × 51 mm

Other versions of this model

5 more in the same range

Same family, different memory, cooler or clock — compare before you commit.

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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