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A square green ceramic chip with gold contacts and a silver heat spreader labeled Core Ultra 5 245KF

Intel Refurbished

Intel Core Ultra 5 245KF BX80768245KF desktop processor

SKU CH-9E0V-MJGT6 MPN BX80768245KF

Refurbished 14-core Arrow Lake desktop processor for LGA 1851 with 24 MB L3 cache, 26 MB L2 cache, DDR5-6400 support and 125 W base power

  • Product nameCore Ultra 5 245KF
  • CPU cores14-Core (6P+8E)
  • CPU socketLGA 1851
  • Maximum turbo clockP-core Max Turbo Frequency: Up to 5.2 GHz E-core Max Turbo F
  • TDP rating125 W
  • Processor classDesktop
  • 14 cores with 6 performance and 8 efficient cores
  • Up to 5.2 GHz P-core turbo for responsive workloads
  • 24 MB L3 and 26 MB L2 cache reduce latency
  • DDR5 6400 dual-channel support up to 256 GB
  • LGA 1851 socket with PCIe 5.0 and 4.0 lanes

14-core Arrow Lake desktop CPU

The Intel Core Ultra 5 245KF is a 14-core desktop processor with six performance cores and eight efficient cores. It fits the LGA 1851 socket and has a 125 W base power rating. The chip is sold as a refurbished unit without integrated graphics.

Best for discrete graphics builds

This CPU suits builders who will pair it with a dedicated graphics card and want PCIe 5.0 and DDR5 6400 support. Systems that rely on integrated graphics or need a lower power envelope should look at other models.

125 W base power decides cooling

The processor runs at a 125 W base power with performance cores reaching up to 5.2 GHz and efficient cores up to 4.6 GHz. Your cooler and case airflow must handle this thermal load for sustained boost clocks.

How it compares

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

Price $122.99
Cheaper than about 59% of the 494 comparable items (median $149.99).
CPU cores 14-Core (6P+8E)
Higher than about 65% of the 271 comparable items (median 8).
Maximum turbo clock P-core Max Turbo Frequency: Up to 5.2 GHz E-core Max Turbo Frequency: Up to 4.6 GHz
Higher than about 70% of the 246 comparable items (median 4.7 GHz).

New to this? Buying a processor with crypto — what to check, what it costs to pay, and what is never asked for.

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 clockP-core Max Turbo Frequency: Up to 5.2 GHz
E-core Max Turbo Frequency: Up to 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
Max PCIe lanes24
Memory
Supported memoryDDR5 6400
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

Questions about this item

What motherboard socket does the Core Ultra 5 245KF require?

The processor fits the LGA 1851 socket, so the motherboard must use that exact socket.

Which step is often missed when installing this CPU?

Applying thermal paste and securing the cooler before powering on is the step people forget, and the chip has no integrated graphics to fall back on.

What memory will need replacing if I upgrade capacity later?

The CPU supports DDR5 6400 in dual-channel up to 256 GB, so any future capacity increase means buying DDR5 modules.

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