Core i9-11900KF

Name: Intel Core i9-11900KF
Brand: Intel
Rating: 4.2 (100 reviews)

8 cores · 16 threads · up to 5.2 GHz on FCLGA1200.

4.2 · 100 votes

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Cores

Threads

Boost

5.2 GHz

L3 cache

16 MB

TDP

125W

Socket

FCLGA1200

Performance breakdown

Gaming15

Productivity14

Single-core15

Multi-core33

Power efficiency13

Lab scores

Performance score15

Cores8

Threads16

Boost clock (GHz)5.2 GHz

Estimated gaming FPS

Paired with a high-end GPU. CPU impact is largest at 1080p.

1080p33 fps

1440p26 fps

4K18 fps

Full specifications

Processor & cores

Architecture: Rocket Lake
Process node: 14 nm
Socket: FCLGA1200
Release year: 2021
Total cores: 8
Threads: 16
Integrated graphics: None

Clocks & cache

Base clock: 3.5 GHz
Boost clock: 5.2 GHz
L1 cache: 512 KB
L2 cache: 2 MB
L3 cache: 16 MB

Memory & platform

Memory support: DDR4-3200
Max capacity: 128 GB
Channels: 2
Max bandwidth: 50 GB/s
Base power (TDP): 125W
Max temperature: 100°C
PCIe: PCIe 4.0

Technologies

Instruction sets: SSE4.1, SSE4.2, AVX2, AVX-512
Extensions: AES-NI, AVX, VT-x, VT-d, Turbo Boost Max 3.0, TXT, TSX

Community Feedback

What Owners Say

Fans love the single-core speed for gaming and how it handles everyday tasks. The common complaint is it runs hot under load and sucks power like crazy.

Pros

Sips power, stays whisper quiet
Great for gaming at high settings
Handles heavy multitasking without fuss
Runs cool with a decent cooler

Cons

Not a real upgrade from last gen.
Gets hot under heavy load.
No integrated graphics for troubleshooting.

Verdict

Our verdict on the Core i9-11900KF

An 8-core Rocket Lake chip with single-core speed that's a genuine highlight, held back by high power draw and a dead-end socket.

Get it if you need strong single-core performance for gaming on an older LGA1200 board and don't mind high power draw. Skip it if you're building new—modern CPUs offer more cores and better efficiency for similar or less money.