Intel Core Ultra 7 255U vs Intel Core i7 12800HX
We compared two laptop CPUs: Intel Core Ultra 7 255U with 12 cores 2.0GHz and Intel Core i7 12800HX with 16 cores 2.0GHz . You will find out which processor performs better in benchmark tests, key specifications, power consumption and more.
Main Differences
Intel Core Ultra 7 255U 's Advantages
Released 2 years and 8 months late
Higher specification of memory (8400 vs 4800)
More modern manufacturing process (3nm vs 10nm)
Lower TDP (15W vs 55W)
Intel Core i7 12800HX 's Advantages
Newer PCIe version (5.0 vs 4.0)
Larger L3 cache size (25MB vs 12MB)
Score
Benchmark
Cinebench R23 Single Core
Intel Core Ultra 7 255U
+1%
1803
Intel Core i7 12800HX
1784
Cinebench R23 Multi Core
Intel Core Ultra 7 255U
11888
Intel Core i7 12800HX
+67%
19921
Geekbench 6 Single Core
Intel Core Ultra 7 255U
+8%
2582
Intel Core i7 12800HX
2380
Geekbench 6 Multi Core
Intel Core Ultra 7 255U
10941
Intel Core i7 12800HX
+22%
13378
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-HX
255U
Processor Number
i7-12800HX
FCBGA-2049
Socket
BGA-1744
Arc Graphics (4-Cores)
Integrated Graphics
UHD Graphics (32EU)
Package
3 nm
Manufacturing Process
10 nm
12-15 W
Power Consumption
45-55 W
57 W
Max Turbo Power Consumption
-
110 °C
Peak Operating Temperature
100 °C
CPU Performance
2
Performance Cores
8
4
Performance Core Threads
-
2.0 GHz
Performance Core Base Frequency
2.0 GHz
5.2 GHz
Performance Core Turbo Frequency
4.8 GHz
10
Efficiency Cores
8
10
Efficiency Core Threads
-
1.7 GHz
Efficiency Core Base Frequency
-
4.2 GHz
Efficiency Core Turbo Frequency
-
12
Total Core Count
16
14
Total Thread Count
24
100 MHz
Bus Frequency
100 MHz
20
Multiplier
20x
112 K per core
L1 Cache
80 K per core
2 MB per core
L2 Cache
1280 K per core
12 MB shared
L3 Cache
25 MB shared
No
Unlocked Multiplier
Yes
Memory Parameters
LPDDR5-8400,LPDDR5x-8400,DDR5-6400
Memory Types
DDR5-4800, DDR4-3200
128 GB
Max Memory Size
128 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
2100 MHz
GPU Max Dynamic Frequency
1450 MHz
-
Shader Units
256
-
Texture Units
16
-
Raster Operation Units
8
-
Execution Units
32
-
Power Consumption
45 W
-
Graphics Performance
0.74 TFLOPS
Miscellaneous
4.0
PCIe Version
5.0
20
PCIe Lanes
20
