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Intel

Intel Core Ultra 7 265KF BX80768265KF desktop processor

SKU CH-0QFS-V9FBN MPN BX80768265KF

20-core desktop CPU with 8 performance and 12 efficient cores, 30 MB L3 cache and DDR5-6400 support up to 256 GB, no integrated graphics

  • Product nameCore Ultra 7 265KF
  • CPU cores20-Core (8P+12E)
  • CPU socketLGA 1851
  • Maximum turbo clockIntel Turbo Boost Max Technology 3.0 Frequency: Up to 5.5 GH
  • TDP rating125 W
  • Processor classDesktop
  • 20 cores and 20 threads handle heavy multitasking
  • Performance cores reach 5.5 GHz max turbo for fast single-thread speed
  • 36 MB L2 plus 30 MB L3 cache reduce memory latency
  • DDR5 6400 MT/s support across two channels enables high bandwidth
  • 3 nm Arrow Lake architecture delivers 125 W base power efficiency

Intel Core Ultra 7 265KF overview

The Intel Core Ultra 7 265KF is a desktop processor built on the Arrow Lake architecture using TSMC N3B 3nm manufacturing technology. It fits the LGA 1851 socket and delivers 20 cores comprising 8 performance cores and 12 efficient cores with 20 threads. Base frequencies sit at 3.9 GHz for P-cores and 3.3 GHz for E-cores while maximum turbo reaches 5.5 GHz via Intel Turbo Boost Max Technology 3.0. The chip carries 36 MB L2 cache and 30 MB L3 cache with a 125 W base power rating and no integrated graphics.

Best fit and alternatives

This processor suits builders targeting high single-thread speed and strong multi-core throughput for content creation, compilation or gaming at high refresh rates. The lack of integrated graphics means a discrete GPU is mandatory so systems without a dedicated graphics card should look elsewhere. Users needing more than 256 GB of memory or multi-socket scaling will also need a different platform. Overclocking headroom is present but demands robust cooling and a compatible motherboard.

Deciding specification

The LGA 1851 socket and 125 W base power are the critical compatibility gates. Only motherboards with the LGA 1851 socket and a power delivery system rated for at least 125 W base power can support this CPU. DDR5 memory up to 6400 MT/s across two channels with a maximum capacity of 256 GB completes the platform requirements. Verify your board and cooler meet these figures before purchase.

How it compares

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

Price $253.99
Pricier than about 69% of the 494 comparable items (median $149.99).
CPU cores 20-Core (8P+12E)
Higher than about 85% of the 271 comparable items (median 8).
TDP rating 125 W
Higher than about 70% of the 320 comparable items (median 95 W).

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Specifications

Product
Brand nameIntel
Product lineCore Ultra 7 (Series 2)
Model nameBX80768265KF
Product nameCore Ultra 7 265KF
Performance
Working frequencyPerformance-core Base Frequency: 3.9 GHz
Efficient-core Base Frequency: 3.3 GHz
Processor
CPU cores20-Core (8P+12E)
CPU socketLGA 1851
Maximum turbo clockIntel Turbo Boost Max Technology 3.0 Frequency: Up to 5.5 GHz
P-core Max Turbo Frequency: Up to 5.4 GHz
E-core Max Turbo Frequency: Up to 4.6 GHz
TDP rating125 W
Processor classDesktop
Processor codenameArrow Lake
CPU threads20-Threads
Level 2 cache36 MB
Level 3 cache30 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 power250 W
Size & build
Shipping weight0.09 kg
Package size114 × 102 × 44 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

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Questions about this item

How can I confirm the processor is hitting its 5.5 GHz Turbo Boost Max 3.0 frequency after installation?

Open Task Manager or a monitoring utility such as HWiNFO and run a single-threaded load; the performance cores should report a peak of 5.5 GHz when thermal and power headroom allow.

Does the BX80768265KF box include a cooler, and what memory must I purchase separately?

The boxed processor ships without a thermal solution, so you need a compatible LGA 1851 cooler, plus DDR5 modules rated for up to 6400 MT/s to match the dual-channel controller.

The lineup shows several Core Ultra 7 models — why choose the 265KF over the others?

The 265KF delivers 20 cores (8P+12E), 30 MB L3 cache, 125 W base power and no integrated graphics, positioning it as the highest-clocked K-series SKU without an iGPU.

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