Intel

Core i9-13900K

Intel's 13th-gen 24-core flagship with integrated UHD 770 graphics, a 5.8 GHz Adaptive Boost ceiling, and PCIe 5.0 on LGA1700.

75/100
Very good
Overall score · how we rate
24 cores / 32 threads5.8 GHz boostIntel UHD 770 iGPULGA1700 socketDDR4 and DDR5
£460best price at Amazon
In stock at 1 retailer

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Why we rate it

  • Integrated UHD 770 graphics
  • 5.8 GHz Adaptive Boost ceiling
  • 24 hybrid cores for serious work
  • Flexibility on DDR4 or DDR5
  • Up to 253W under all-core load
  • LGA1700 is end of life
Score profile

Where the Core i9-13900K wins and loses

Scored against the cpus class
GamingMulti-threa…Single-thre…Power84989644
Gaming performance
84
Multi-threaded performance
98
Single-threaded performance
96
Power efficiency
44
Full specification

Specifications

Grouped · supported features marked in blue

Cores and threads

Cores24
P-cores8
E-cores16

Clocks and cache

Turbo / boost clock5.8 GHz

Watch it in action

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Head to head

Core i9-13900K vs Intel Core i9-13900KF

Highlighted cell = better in that row
GamingMulti-threa…Single-thre…Power
Core i9-13900KCore i9-13900KF
 IntelCore i9-13900KThis pageIntelCore i9-13900KF
Overall score75 /10075 /100
Core count2424
Boost clock5.8 GHz5.8 GHz
Who it's for

Is the Core i9-13900K right for you?

Buy it if
Enthusiast LGA1700 gaming and creator builds

For builders who want Intel's 13th gen peak with iGPU fallback, full OC access, and PCIe 5.0 on LGA1700, the 13900K is the complete flagship package.

Skip it if
Fresh builds or gaming-first buyers

LGA1700 is a dead end for CPU upgrades. Fresh builds should consider AM5 or LGA1851. For gaming-first, AMD V-Cache is the more efficient choice.

LGA1700 Z790 board upgrader
Has a high-end LGA1700 board and wants the best chip available for it with iGPU fallback. The 13900K delivers 24 cores and 5.8 GHz with the practical advantage of integrated graphics.
excellent
Enthusiast gaming and creator
Renders complex 3D scenes, encodes video, and games competitively. The 24-core hybrid design handles all three, with 5.8 GHz keeping gaming competitive even if AMD V-Cache leads.
good
LGA1700 upgrade from 12th gen i9
On an existing Z690 or Z790 board and wants the 24-core step up. The 13900K adds eight more E-cores and a higher boost over the 12900K for meaningful productivity gains.
good
Pure gaming fresh build buyer
Starting fresh with gaming as the primary goal. LGA1700 is end of life and AMD V-Cache delivers better gaming fps. Consider AM5 or LGA1851 for new gaming builds.
skip
Common questions

Before you buy

What is the difference between the i9-13900K and i9-13900KF?

The 13900K has Intel UHD Graphics 770 on-die. The 13900KF has no iGPU and is typically slightly cheaper. Performance in gaming and productivity is identical. Buy the K if the price gap is small and display fallback is useful.

How does the 5.8 GHz boost work?

Intel Adaptive Boost Technology combined with Thermal Velocity Boost allows the chip to push to 5.8 GHz on one or two cores when thermal headroom allows. Actual boost depends on workload and cooling quality.

Does the i9-13900K need a 360mm AIO?

For sustained all-core workloads approaching 253W, yes. For gaming loads it draws significantly less, but a quality 360mm AIO or top-tier tower like a Noctua NH-D15 is the recommended setup.

How does the i9-13900K compare to the i9-14900K?

The 14900K (14th gen) adds a slightly higher 6 GHz ceiling via 14th gen Raptor Lake Refresh. Gaming and productivity differences are modest. At similar used prices, the 14900K edges ahead in single-core; the 13900K may be better value.