Intel Core i9 12900HK vs Intel Core Ultra 7 251HX
CPU · Specs Compare
General Parameters
Release Date
Jan 2022
Apr 2026
Manufacturer
Intel
Intel
Type
Laptop
Laptop
Instruction Set
x86-64
x86-64
Core Architecture
Alder Lake
Arrow Lake
Processor Number
i9-12900HK
251HX
Integrated Graphics
Iris Xe Graphics (96EU)
Arc Graphics (4-Cores)
Package
Manufacturing Process
10 nm
3 nm
Socket
BGA-1744
FCBGA-2114
Power Consumption
35-45 W
45-55 W
Max Turbo Power Consumption
115 W
160 W
Peak Operating Temperature
100°C
105 °C
CPU Performance
Performance Cores
6
6
Performance Core Threads
12
6
Performance Core Base Frequency
2.5 GHz
2.9 GHz
Performance Core Turbo Frequency
5 GHz
5.1 GHz
Efficiency Cores
8
12
Efficiency Core Threads
8
12
Efficiency Core Base Frequency
1.8 GHz
2.5 GHz
Efficiency Core Turbo Frequency
3.8 GHz
4.5 GHz
Total Core Count
14
18
Total Thread Count
20
18
Bus Frequency
100 MHz
100 MHz
Multiplier
25x
29
L1 Cache
80 K per core
192 K per core
L2 Cache
1280 K per core
2 MB per core
L3 Cache
24 MB shared
30 MB shared
Unlocked Multiplier
Yes
Yes
Memory Parameters
Memory Types
DDR5-4800, DDR4-3200, LPDDR5-5200, LPDDR4x-4267
DDR5-6400
Max Memory Size
64 GB
256 GB
Max Memory Channels
2
2
Max Memory Bandwidth
76.8 GB/s
102.4 GB/s
ECC Memory Support
No
No
Graphics Card Parameters
Integrated Graphics
true
true
GPU Base Frequency
300 MHz
300 MHz
GPU Max Dynamic Frequency
1450 MHz
1800 MHz
Shader Units
768
512
Texture Units
48
32
Raster Operation Units
24
16
Execution Units
96
64
Power Consumption
15 W
14
Miscellaneous
PCIe Version
4.0
5.0
PCIe Lanes
28
24
Benchmark
Cinebench R23
1,934
—
Cinebench R23
18,257
—
Geekbench 6
2,361
2,940
Geekbench 5
1,793
—
Geekbench 6
12,172
15,262
Geekbench 5
13,317
—
Blender
253
—
Passmark CPU
3,676
—
Passmark CPU
27,949
—
Cinebench 2024
—
130
Cinebench 2024
—
1,761
▲ Specs Compare
Data sourced from official specifications and benchmark tests.