Intel Core i9 14900HX vs Intel Core Ultra 7 255U
We compared two laptop CPUs: Intel Core i9 14900HX with 24 cores 2.2GHz and Intel Core Ultra 7 255U with 12 cores 2.0GHz . You will find out which processor performs better in benchmark tests, key specifications, power consumption and more.
Main Differences
Intel Core i9 14900HX Advantages
Newer PCIe version (5.0 vs 4.0)
Higher base frequency (2.2GHz vs 2.0GHz)
Larger L3 cache size (36MB vs 12MB)
Intel Core Ultra 7 255U Advantages
Released 1 years late
Higher specification of memory (8400 vs 5600)
More modern manufacturing process (3nm vs 10nm)
Lower TDP (15W vs 55W)
Score
Benchmark
Cinebench R23 Single Core
Intel Core i9 14900HX
+20%
2176
Intel Core Ultra 7 255U
1803
Cinebench R23 Multi Core
Intel Core i9 14900HX
+165%
31592
Intel Core Ultra 7 255U
11888
Geekbench 6 Single Core
Intel Core i9 14900HX
+17%
3026
Intel Core Ultra 7 255U
2582
Geekbench 6 Multi Core
Intel Core i9 14900HX
+68%
18418
Intel Core Ultra 7 255U
10941
Cinebench 2024 Single Core
Intel Core i9 14900HX
+27%
129
Intel Core Ultra 7 255U
101
Cinebench 2024 Multi Core
Intel Core i9 14900HX
+195%
1737
Intel Core Ultra 7 255U
588
General Parameters
Jan 2024
Release Date
Jan 2025
Intel
Manufacturer
Intel
Laptop
Type
Laptop
x86-64
Instruction Set
x86-64
Raptor Lake Refresh
Core Architecture
Arrow Lake
i9-14900HX
Processor Number
255U
BGA-1964
Socket
FCBGA-2049
UHD Graphics (32EU)
Integrated Graphics
Arc Graphics (4-Cores)
Package
10 nm
Manufacturing Process
3 nm
45-55 W
Power Consumption
12-15 W
157 W
Max Turbo Power Consumption
57 W
100°C
Peak Operating Temperature
110 °C
CPU Performance
8
Performance Cores
2
16
Performance Core Threads
4
2.2 GHz
Performance Core Base Frequency
2.0 GHz
5.8 GHz
Performance Core Turbo Frequency
5.2 GHz
16
Efficiency Cores
10
16
Efficiency Core Threads
10
1.6 GHz
Efficiency Core Base Frequency
1.7 GHz
4.1 GHz
Efficiency Core Turbo Frequency
4.2 GHz
24
Total Core Count
12
32
Total Thread Count
14
100 MHz
Bus Frequency
100 MHz
22x
Multiplier
20
80 K per core
L1 Cache
112 K per core
2 MB per core
L2 Cache
2 MB per core
36 MB shared
L3 Cache
12 MB shared
Yes
Unlocked Multiplier
No
Memory Parameters
DDR5-5600, DDR4-3200
Memory Types
LPDDR5-8400,LPDDR5x-8400,DDR5-6400
192 GB
Max Memory Size
128 GB
2
Max Memory Channels
2
89.6 GB/s
Max Memory Bandwidth
-
Yes
ECC Memory Support
No
Graphics Card Parameters
true
Integrated Graphics
true
300 MHz
GPU Base Frequency
-
1650 MHz
GPU Max Dynamic Frequency
2100 MHz
256
Shader Units
-
16
Texture Units
-
8
Raster Operation Units
-
32
Execution Units
-
45 W
Power Consumption
-
0.74 TFLOPS
Graphics Performance
-
Miscellaneous
5.0
PCIe Version
4.0
20
PCIe Lanes
20
