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Intel Core i9 12900KF
Intel Desktop CPU

Intel Core i9 12900KF

69B
Cores16
Threads24
Boost Clock5.1 GHz
TDP125 W
SocketLGA-1700
Process10 nm
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Benchmarks

Cinebench 2024 Single-Core115
Cinebench 2024 Multi-Core1463
TDP125 W Boost: 241 W
Cache L330MB
Cinebench 2024 (Single)115
Cinebench 2024 (Multi)1463
Geekbench 6 (Single-Core)2686
Geekbench 6 (Multi-Core)16,140
Passmark CPU (Single-Core)4119
Passmark CPU (Multi-Core)40,499
Blender CPU365.61

Full specifications

GeekBench v6

File compression
1150 MB/sec
Clang compilation
141 Klines/sec
HTML 5 Browser
363.2 pages/sec
PDF Renderer
475.6 Mpixels/sec
Text processing
274.8 pages/sec
Background blur
66.8 images/sec
Photo processing
138.5 images/sec
Ray tracing
33.9 Mpixels/sec

PassMark

Integer math
138.3 GOps/sec
Floating point math
104.8 GOps/sec
Find prime numbers
138M Primes/sec
Random string sorting
56.7M Strings/sec
Data encryption
29.2 GBytes/sec
Data compression
532.8 MBytes/sec
Physics
2054 Frames/sec
Extended instructions
33.4B Matrices/sec

Performance Per Watt

Cinebench 2024 / Watt
11.7 PPW
Geekbench 6 Multi / Watt
129.1 PPW
Passmark CPU Mark / Watt
324 PPW
Blender / Watt
2.92 PPW

General

Vendor
Intel
Released
October 27, 2021
Type
Desktop
Instruction Set
x86-64
Codename
Alder Lake
Model number
i9-12900KF
Integrated GPU
No
AMD Equivalent
- AMD Ryzen 9 5950X
Successor
- Intel Core i9 14900KF

CPU

P-Cores
8
P-Threads
16
Base Frequency (P)
3.2 GHz
Turbo Boost Frequency (P)
5.1 GHz
E-Cores
8
E-Threads
8
Base Frequency (E)
2.4 GHz
Turbo Boost Frequency (E)
3.9 GHz
Total Cores
16
Total Threads
24
Bus Frequency
100 MHz
Multiplier
32x
L1 Cache
64K (per core)
L2 Cache
14MB (shared)
L3 Cache
30MB (shared)
Unlocked Multiplier
Yes

Package

Fabrication Process
10 nm
TDP (PL1)
125 W
Max. Boost TDP (PL2)
241 W
Socket
LGA-1700
Peak Temperature
100°C

Memory Support

Memory Types
- DDR5-4800 / - DDR4-3200
Max. Memory Size
128 GB
Memory Channels
2
Max. Memory Bandwidth
76.8 GB/s
ECC Support
Yes

Misc

Official Site
Intel Core i9 12900KF official page
PCI Express Version
5.0
PCI Express Lanes
20
Technologies
- Compute: ABM, ADX, BMI1, BMI2, CLMUL, F16C, SHA - Performance: EIST, TBT 2.0, TBT 3.0, TSX - Virtualization: VT-d, VT-x - Security: RDRAND, TXT, XD bit

Specifications compiled from NanoReview. Last updated 2026-09-29.

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