Intel Core Ultra 7 255HX vs Intel Core i9 12900HX
We compared two laptop CPUs: Intel Core Ultra 7 255HX with 20 cores 2.4GHz and Intel Core i9 12900HX with 16 cores 2.3GHz . You will find out which processor performs better in benchmark tests, key specifications, power consumption and more.
Main Differences
Intel Core Ultra 7 255HX 's Advantages
Released 2 years and 8 months late
Better graphics card performance
Higher specification of memory (6400 vs 4800)
Larger memory bandwidth (102.4GB/s vs 76.8GB/s)
Higher base frequency (2.4GHz vs 2.3GHz)
More modern manufacturing process (3nm vs 10nm)
Score
Benchmark
Cinebench R23 Single Core
Intel Core Ultra 7 255HX
+6%
2030
Intel Core i9 12900HX
1904
Cinebench R23 Multi Core
Intel Core Ultra 7 255HX
+22%
25611
Intel Core i9 12900HX
20977
Geekbench 6 Single Core
Intel Core Ultra 7 255HX
+23%
3102
Intel Core i9 12900HX
2519
Geekbench 6 Multi Core
Intel Core Ultra 7 255HX
+9%
15879
Intel Core i9 12900HX
14447
General Parameters
Jan 2025
Release Date
May 2022
Intel
Manufacturer
Intel
Laptop
Type
Laptop
x86-64
Instruction Set
x86-64
Arrow Lake
Core Architecture
Alder Lake
255HX
Processor Number
i9-12900HX
FCBGA-2114
Socket
BGA-1964
Arc Graphics (4-Cores)
Integrated Graphics
UHD Graphics (32EU)
Ultra 7 (Arrow Lake)
Generation
-
Package
3 nm
Manufacturing Process
10 nm
45-55 W
Power Consumption
45-55 W
160 W
Max Turbo Power Consumption
157 W
105 °C
Peak Operating Temperature
100°C
Intel
Foundry
-
CPU Performance
8
Performance Cores
8
8
Performance Core Threads
16
2.4 GHz
Performance Core Base Frequency
2.3 GHz
5.2 GHz
Performance Core Turbo Frequency
5 GHz
12
Efficiency Cores
8
12
Efficiency Core Threads
8
1.8 GHz
Efficiency Core Base Frequency
1.7 GHz
4.5 GHz
Efficiency Core Turbo Frequency
3.6 GHz
20
Total Core Count
16
20
Total Thread Count
24
100 MHz
Bus Frequency
100 MHz
24
Multiplier
23x
112 K per core
L1 Cache
80 K per core
2 MB per core
L2 Cache
1280 K per core
30 MB shared
L3 Cache
30 MB shared
Yes
Unlocked Multiplier
Yes
1
SMP
-
Memory Parameters
DDR5-6400
Memory Types
DDR5-4800, DDR4-3200
192 GB
Max Memory Size
128 GB
2
Max Memory Channels
2
102.4 GB/s
Max Memory Bandwidth
76.8 GB/s
Yes
ECC Memory Support
No
Graphics Card Parameters
true
Integrated Graphics
true
300 MHz
GPU Base Frequency
300 MHz
1850 MHz
GPU Max Dynamic Frequency
1550 MHz
512
Shader Units
256
32
Texture Units
16
16
Raster Operation Units
8
64
Execution Units
32
14
Power Consumption
45 W
1.9 TFLOPS
Graphics Performance
0.74 TFLOPS
Miscellaneous
5.0
PCIe Version
5.0
24
PCIe Lanes
20
