Intel Core Ultra 7 255HX vs Intel Core i5 1245U
We compared two laptop CPUs: Intel Core Ultra 7 255HX with 20 cores 2.4GHz and Intel Core i5 1245U with 10 cores 1.6GHz . 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 11 months late
Better graphics card performance
Higher specification of memory (6400 vs 5200)
Larger memory bandwidth (102.4GB/s vs 76.8GB/s)
Newer PCIe version (5.0 vs 4.0)
Higher base frequency (2.4GHz vs 1.6GHz)
Larger L3 cache size (30MB vs 12MB)
More modern manufacturing process (3nm vs 10nm)
Intel Core i5 1245U 's Advantages
Lower TDP (15W vs 55W)
Score
Benchmark
Cinebench R23 Single Core
Intel Core Ultra 7 255HX
+24%
2030
Intel Core i5 1245U
1629
Cinebench R23 Multi Core
Intel Core Ultra 7 255HX
+248%
25611
Intel Core i5 1245U
7341
Geekbench 6 Single Core
Intel Core Ultra 7 255HX
+62%
3102
Intel Core i5 1245U
1910
Geekbench 6 Multi Core
Intel Core Ultra 7 255HX
+249%
15879
Intel Core i5 1245U
4549
General Parameters
Jan 2025
Release Date
Feb 2022
Intel
Manufacturer
Intel
Laptop
Type
Laptop
x86-64
Instruction Set
x86-64
Arrow Lake
Core Architecture
Alder Lake-U
255HX
Processor Number
i5-1245U
FCBGA-2114
Socket
BGA-1744
Arc Graphics (4-Cores)
Integrated Graphics
Iris Xe Graphics G7 (80EU)
Ultra 7 (Arrow Lake)
Generation
-
Package
3 nm
Manufacturing Process
10 nm
45-55 W
Power Consumption
12-15 W
160 W
Max Turbo Power Consumption
-
105 °C
Peak Operating Temperature
100 °C
Intel
Foundry
-
CPU Performance
8
Performance Cores
2
8
Performance Core Threads
-
2.4 GHz
Performance Core Base Frequency
1.6 GHz
5.2 GHz
Performance Core Turbo Frequency
4.4 GHz
12
Efficiency Cores
8
12
Efficiency Core Threads
-
1.8 GHz
Efficiency Core Base Frequency
-
4.5 GHz
Efficiency Core Turbo Frequency
-
20
Total Core Count
10
20
Total Thread Count
12
100 MHz
Bus Frequency
100 MHz
24
Multiplier
16x
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
12 MB shared
Yes
Unlocked Multiplier
No
1
SMP
-
Memory Parameters
DDR5-6400
Memory Types
DDR5-4800, DDR4-3200, LPDDR5-5200, LPDDR4x-4267
192 GB
Max Memory Size
64 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
1200 MHz
512
Shader Units
640
32
Texture Units
40
16
Raster Operation Units
20
64
Execution Units
80
14
Power Consumption
15 W
1.9 TFLOPS
Graphics Performance
1.41 TFLOPS
