Intel Core Ultra 7 255H vs Intel Core Ultra 9 275HX
We compared two laptop CPUs: Intel Core Ultra 7 255H with 16 cores 2.0GHz and Intel Core Ultra 9 275HX with 24 cores 2.7GHz . 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
Higher specification of memory (8400 vs 6400)
Lower TDP (28W vs 55W)
Intel Core Ultra 9 275HX 's Advantages
Higher base frequency (2.7GHz vs 2.0GHz)
Larger L3 cache size (36MB vs 24MB)
Score
Benchmark
Cinebench R23 Single Core
Intel Core Ultra 7 255H
2029
Intel Core Ultra 9 275HX
+3%
2090
Cinebench R23 Multi Core
Intel Core Ultra 7 255H
20521
Intel Core Ultra 9 275HX
+52%
31244
Geekbench 6 Single Core
Intel Core Ultra 7 255H
2823
Intel Core Ultra 9 275HX
+4%
2959
Geekbench 6 Multi Core
Intel Core Ultra 7 255H
15662
Intel Core Ultra 9 275HX
+12%
17562
Cinebench 2024 Single Core
Intel Core Ultra 7 255H
115
Intel Core Ultra 9 275HX
+13%
131
Cinebench 2024 Multi Core
Intel Core Ultra 7 255H
1102
Intel Core Ultra 9 275HX
+60%
1768
General Parameters
Jan 2025
Release Date
Jan 2025
Intel
Manufacturer
Intel
Laptop
Type
Laptop
x86-64
Instruction Set
x86-64
Arrow Lake
Core Architecture
Arrow Lake
255H
Processor Number
275HX
FCBGA-2049
Socket
FCBGA-2114
Arc Graphics 140T
Integrated Graphics
Arc Graphics (4-Cores)
-
Generation
Ultra 9 (Arrow Lake)
Package
3 nm
Manufacturing Process
3 nm
20-28 W
Power Consumption
45-55 W
115 W
Max Turbo Power Consumption
160 W
110 °C
Peak Operating Temperature
105 °C
-
Foundry
Intel
CPU Performance
6
Performance Cores
8
6
Performance Core Threads
8
2.0 GHz
Performance Core Base Frequency
2.7 GHz
5.1 GHz
Performance Core Turbo Frequency
5.4 GHz
10
Efficiency Cores
16
10
Efficiency Core Threads
16
1.5 GHz
Efficiency Core Base Frequency
2.1 GHz
4.4 GHz
Efficiency Core Turbo Frequency
4.6 GHz
16
Total Core Count
24
16
Total Thread Count
24
100 MHz
Bus Frequency
100 MHz
20
Multiplier
27
112 K per core
L1 Cache
112 K per core
2 MB per core
L2 Cache
2 MB per core
24 MB shared
L3 Cache
36 MB shared
No
Unlocked Multiplier
Yes
-
SMP
1
Memory Parameters
LPDDR5-8400,LPDDR5x-8400,DDR5-6400
Memory Types
DDR5-6400
128 GB
Max Memory Size
192 GB
2
Max Memory Channels
2
-
Max Memory Bandwidth
102.4 GB/s
No
ECC Memory Support
Yes
Graphics Card Parameters
true
Integrated Graphics
true
-
GPU Base Frequency
300 MHz
2250 MHz
GPU Max Dynamic Frequency
1900 MHz
-
Shader Units
512
-
Texture Units
32
-
Raster Operation Units
16
-
Execution Units
64
-
Power Consumption
14
-
Graphics Performance
1.9 TFLOPS
Miscellaneous
5.0
PCIe Version
5.0
28
PCIe Lanes
24
