Intel Core i9 12900HX vs i9 12900HK

We compared two laptop CPUs: the 2.3 GHz Intel Core i9 12900HX with 16-cores against the 2.5 GHz i9 12900HK with 14-cores. On this page, you'll find out which processor has better performance in benchmarks, games and other useful information.


General overview and comparison of the processors
Single-Core Performance
Performance in single-threaded apps and benchmarks
Multi-Core Performance
Measure performance when all cores are involved
Power Efficiency
The efficiency score of power consumption
Integrated Graphics
iGPU capabilities for gaming and 3D-intensive tasks
NanoReview Final Score
Generic CPU rating

Key Differences

What are the key differences between 12900HK and 12900HX
Advantages of Intel Core i9 12900HX
  • Supports up to 128 GB DDR5-4800 RAM
  • Has 6144 KB larger L3 cache size
  • Newer PCI Express version – 5.0
  • Has 2 more physical cores

Test in Benchmarks

Comparing the performance of CPUs across various tasks

Cinebench R23

Reputable cross-platform benchmark for high-performance processors
Cinebench R23 (Single-Core)
Cinebench R23 (Multi-Core)

GeekBench v6

The new version of this benchmark emulates common operations often used in real-world apps
Geekbench 6 (Single-Core)
Geekbench 6 (Multi-Core)
File compression 1160 MB/sec 584.3 MB/sec
Clang compilation 129.9 Klines/sec 135.7 Klines/sec
HTML 5 Browser 359.9 pages/sec 195 pages/sec
PDF Renderer 420.5 Mpixels/sec 326.9 Mpixels/sec
Text processing 252 pages/sec 285.3 pages/sec
Background blur 41.7 images/sec 59.9 images/sec
Photo processing 125 images/sec 73.3 images/sec
Ray tracing 29.8 Mpixels/sec 30.4 Mpixels/sec
Sources: GeekBench [1], [2]


Synthetic test that focuses on raw computational performance for low-level functions
Passmark CPU (Single-Core)
Passmark CPU (Multi-Core)
Integer math 119.2 GOps/sec 97.9 GOps/sec
Floating point math 89.3 GOps/sec 69 GOps/sec
Find prime numbers 139M Primes/sec 115M Primes/sec
Random string sorting 47.1M Strings/sec 36.3M Strings/sec
Data encryption 24.2 GBytes/sec 19.2 GBytes/sec
Data compression 422.6 MBytes/sec 323.1 MBytes/sec
Physics 2075 Frames/sec 1876 Frames/sec
Extended instructions 25.7B Matrices/sec 19.3B Matrices/sec
Sources: PassMark [3], [4]


Full technical specification of Intel Core i9 12900HX and i9 12900HK


Vendor Intel Intel
Released May 10, 2022 January 4, 2022
Type Laptop Laptop
instruction set x86-64 x86-64
Codename Alder Lake Alder Lake
Model number i9-12900HX i9-12900HK
Integrated GPU UHD Graphics (32EU) Iris Xe Graphics (96EU)


Performance Cores
P-Cores 8 6
P-Threads 16 12
Base Frequency (P) 2.3 GHz 2.5 GHz
Turbo Boost Frequency (P) 5 GHz 5 GHz
Efficient Cores
E-Cores 8 8
E-Threads 8 8
Base Frequency (E) 1.7 GHz 1.8 GHz
Turbo Boost Frequency (E) 3.6 GHz 3.8 GHz
Total Cores 16 14
Total Threads 24 20
Bus Frequency 100 MHz 100 MHz
Multiplier 23x 25x
L1 Cache 80K (per core) 80K (per core)
L2 Cache 1280K (per core) 1280K (per core)
L3 Cache 30MB (shared) 24MB (shared)
Unlocked Multiplier Yes Yes


Fabrication process 10 nm 10 nm
TDP (PL1) 45-55 W (configurable) 35-45 W (configurable)
Max. Boost TDP (PL2) 157 W 115 W
Socket BGA-1964 BGA-1744
Peak temperature 100°C 100°C


Integrated Graphics Intel UHD Graphics (32EU) Intel Iris Xe Graphics (96EU)
GPU Base Clock 300 MHz 300 MHz
GPU Boost Clock 1550 MHz 1450 MHz
Shading Units 256 768
TMUs 16 48
ROPs 8 24
Execution Units 32 96
TGP 45 W 15 W

Memory Support

Memory types - DDR5-4800
- DDR4-3200
- DDR5-4800
- DDR4-3200
- LPDDR5-5200
- LPDDR4x-4267
Memory Size 128 GB 64 GB
Max. Memory Channels 2 2
Max. Memory Bandwidth 76.8 GB/s -
ECC Support No No


Official site Intel Core i9 12900HX official page Intel Core i9 12900HK official page
PCI Express Version 5.0 4.0
PCI Express Lanes 20 28

Cast your vote

Choose between two processors
110 (81.5%)
25 (18.5%)
Total votes: 135


So which CPU will you choose: Intel Core i9 12900HK or i9 12900HX?
EOD 08 June 2022 23:18
I have ordered a 12900hk model from a reseller I've been waiting 3 months. time for a refund and upgrade. I wonder how long this will take.
0 Reply
MSI robbed user 07 June 2022 20:28
they robbed us - intel and MSI together - first of all, they sold not good working liquid metal pad in i9 12900HK - and then after time here they go again with better same, etc fixed HX.
+20 Reply