Intel Core i7 1255U vs Intel Core Ultra 7 255H
CPU · Specs Compare
General Parameters
Release Date
Feb 2022
Jan 2025
Manufacturer
Intel
Intel
Type
Laptop
Laptop
Instruction Set
x86-64
x86-64
Core Architecture
Alder Lake
Arrow Lake
Processor Number
i7-1255U
255H
Integrated Graphics
Iris Xe Graphics (96EU)
Arc Graphics 140T
Package
Manufacturing Process
10 nm
3 nm
Socket
BGA-1744
FCBGA-2049
Power Consumption
12-15 W
20-28 W
Max Turbo Power Consumption
55 W
115 W
Peak Operating Temperature
100°C
110 °C
CPU Performance
Performance Cores
2
6
Performance Core Threads
4
6
Performance Core Base Frequency
1.7 GHz
2.0 GHz
Performance Core Turbo Frequency
4.7 GHz
5.1 GHz
Efficiency Cores
8
10
Efficiency Core Threads
8
10
Efficiency Core Base Frequency
1.2 GHz
1.5 GHz
Efficiency Core Turbo Frequency
3.5 GHz
4.4 GHz
Total Core Count
10
16
Total Thread Count
12
16
Bus Frequency
100 MHz
100 MHz
Multiplier
17x
20
L1 Cache
80 K per core
112 K per core
L2 Cache
1280 K per core
2 MB per core
L3 Cache
12 MB shared
24 MB shared
Unlocked Multiplier
No
No
Memory Parameters
Memory Types
DDR5-4800, DDR4-3200, LPDDR5-5200, LPDDR4x-4267
LPDDR5-8400,LPDDR5x-8400,DDR5-6400
Max Memory Size
64 GB
128 GB
Max Memory Channels
2
2
Max Memory Bandwidth
76.8 GB/s
—
ECC Memory Support
No
No
Graphics Card Parameters
Integrated Graphics
true
true
GPU Base Frequency
300 MHz
—
GPU Max Dynamic Frequency
1250 MHz
2250 MHz
Shader Units
768
—
Texture Units
48
—
Raster Operation Units
24
—
Execution Units
96
—
Power Consumption
15 W
—
Miscellaneous
PCIe Version
4.0
5.0
PCIe Lanes
20
28
Benchmark
Cinebench R23
1,701
2,029
Cinebench R23
8,233
20,521
Geekbench 6
2,248
2,823
Geekbench 5
1,628
—
Geekbench 6
7,162
15,662
Geekbench 5
7,372
—
Blender
125
278
Passmark CPU
3,308
—
Passmark CPU
13,792
—
Cinebench 2024
—
115
Cinebench 2024
—
1,102
▲ Specs Compare
Data sourced from official specifications and benchmark tests.