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Intel Core Ultra 7 265KF desktop processor in LGA 1851 socket packaging

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

  • Processors TypeDesktop
  • NameCore Ultra 7 265KF
  • CPU Socket TypeLGA 1851
  • Core NameArrow Lake
  • # of Cores20-Core (8P+12E)
  • # of Threads20-Threads

Options Core Ultra 7 265KF

  • 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.

Highlights

  • 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

Specifications

BrandIntel
Processors TypeDesktop
SeriesCore Ultra 7 (Series 2)
NameCore Ultra 7 265KF
ModelBX80768265KF
CPU Socket TypeLGA 1851
Core NameArrow Lake
# of Cores20-Core (8P+12E)
# of Threads20-Threads
Operating FrequencyPerformance-core Base Frequency: 3.9 GHz
Efficient-core Base Frequency: 3.3 GHz
Max Turbo FrequencyIntel 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
L2 Cache36MB
L3 Cache30MB
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 Power250W
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 Max Technology 3.0: 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 size114 × 102 × 44 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

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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