Intel Core Ultra 7 255H vs Intel Core i9 12900HK
We compared two laptop CPUs: Intel Core Ultra 7 255H with 16 cores 2.0GHz and Intel Core i9 12900HK with 14 cores 2.5GHz . You will find out which processor performs better in benchmark tests, key specifications, power consumption and more.
Main Differences
Intel Core Ultra 7 255H 's Advantages
Released 3 years late
Higher specification of memory (8400 vs 5200)
Newer PCIe version (5.0 vs 4.0)
More modern manufacturing process (3nm vs 10nm)
Lower TDP (28W vs 45W)
Intel Core i9 12900HK 's Advantages
Higher base frequency (2.5GHz vs 2.0GHz)
Score
Benchmark
Cinebench R23 Single Core
Intel Core Ultra 7 255H
+4%
2029
Intel Core i9 12900HK
1934
Cinebench R23 Multi Core
Intel Core Ultra 7 255H
+12%
20521
Intel Core i9 12900HK
18257
Geekbench 6 Single Core
Intel Core Ultra 7 255H
+19%
2823
Intel Core i9 12900HK
2361
Geekbench 6 Multi Core
Intel Core Ultra 7 255H
+28%
15662
Intel Core i9 12900HK
12172
General Parameters
Jan 2025
Release Date
Jan 2022
Intel
Manufacturer
Intel
Laptop
Type
Laptop
x86-64
Instruction Set
x86-64
Arrow Lake
Core Architecture
Alder Lake
255H
Processor Number
i9-12900HK
FCBGA-2049
Socket
BGA-1744
Arc Graphics 140T
Integrated Graphics
Iris Xe Graphics (96EU)
Package
3 nm
Manufacturing Process
10 nm
20-28 W
Power Consumption
35-45 W
115 W
Max Turbo Power Consumption
115 W
110 °C
Peak Operating Temperature
100°C
CPU Performance
6
Performance Cores
6
6
Performance Core Threads
12
2.0 GHz
Performance Core Base Frequency
2.5 GHz
5.1 GHz
Performance Core Turbo Frequency
5 GHz
10
Efficiency Cores
8
10
Efficiency Core Threads
8
1.5 GHz
Efficiency Core Base Frequency
1.8 GHz
4.4 GHz
Efficiency Core Turbo Frequency
3.8 GHz
16
Total Core Count
14
16
Total Thread Count
20
100 MHz
Bus Frequency
100 MHz
20
Multiplier
25x
112 K per core
L1 Cache
80 K per core
2 MB per core
L2 Cache
1280 K per core
24 MB shared
L3 Cache
24 MB shared
No
Unlocked Multiplier
Yes
Memory Parameters
LPDDR5-8400,LPDDR5x-8400,DDR5-6400
Memory Types
DDR5-4800, DDR4-3200, LPDDR5-5200, LPDDR4x-4267
128 GB
Max Memory Size
64 GB
2
Max Memory Channels
2
-
Max Memory Bandwidth
76.8 GB/s
No
ECC Memory Support
No
Graphics Card Parameters
true
Integrated Graphics
true
-
GPU Base Frequency
300 MHz
2250 MHz
GPU Max Dynamic Frequency
1450 MHz
-
Shader Units
768
-
Texture Units
48
-
Raster Operation Units
24
-
Execution Units
96
-
Power Consumption
15 W
-
Graphics Performance
1.69 TFLOPS
Miscellaneous
5.0
PCIe Version
4.0
28
PCIe Lanes
28
