Home/Processors/Intel Core i9 12900K
Intel Core i9 12900K
Intel Desktop CPU

Intel Core i9 12900K

68B
Cores16
Threads24
Boost Clock5.1 GHz
TDP125 W
SocketLGA-1700
Process10 nm
⇄ Compare with…

Benchmarks

Cinebench 2024 Single-Core109
Cinebench 2024 Multi-Core1526
TDP125 W Boost: 241 W
Cache L330MB
Cinebench 2024 (Single)109
Cinebench 2024 (Multi)1526
Geekbench 6 (Single-Core)2633
Geekbench 6 (Multi-Core)17,003
Passmark CPU (Single-Core)4128
Passmark CPU (Multi-Core)41,115
Blender CPU366.86
iGPU FLOPS0.8 TFLOPS

Full specifications

GeekBench v6

File compression
1260 MB/sec
Clang compilation
146.1 Klines/sec
HTML 5 Browser
414.2 pages/sec
PDF Renderer
480.2 Mpixels/sec
Text processing
273.2 pages/sec
Background blur
69.4 images/sec
Photo processing
147.8 images/sec
Ray tracing
34.4 Mpixels/sec

PassMark

Integer math
139.2 GOps/sec
Floating point math
105.4 GOps/sec
Find prime numbers
145M Primes/sec
Random string sorting
57.1M Strings/sec
Data encryption
29.5 GBytes/sec
Data compression
536.7 MBytes/sec
Physics
2203 Frames/sec
Extended instructions
33.6B Matrices/sec

Performance Per Watt

Cinebench 2024 / Watt
12.2 PPW
Geekbench 6 Multi / Watt
136 PPW
Passmark CPU Mark / Watt
328.9 PPW
Blender / Watt
2.93 PPW

General

Vendor
Intel
Released
October 27, 2021
Type
Desktop
Instruction Set
x86-64
Codename
Alder Lake
Model number
i9-12900K
Integrated GPU
UHD Graphics 770
AMD Equivalent
- AMD Ryzen 9 5950X
Successor
- Intel Core Ultra 9 285K

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

iGPU

Integrated Graphics
Intel UHD Graphics 770
GPU Base Clock
300 MHz
GPU Boost Clock
1550 MHz
Shading Units
256
TMUs
16
ROPs
8
Execution Units
32
TGP
15 W

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 12900K 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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