Intel Core i9 7900X vs Intel Core Ultra 7 251HX
CPU Specs Compare
General Parameters
Release Date
May 2017
Apr 2026
Manufacturer
Intel
Intel
Type
Desktop
Laptop
Instruction Set
x86-64
x86-64
Core Architecture
Skylake
Arrow Lake
Processor Number
i9-7900X
251HX
Integrated Graphics
N/A
Arc Graphics (4-Cores)
Package
Manufacturing Process
14 nm
3 nm
Socket
LGA-2066
FCBGA-2114
Power Consumption
140 W
45-55 W
Peak Operating Temperature
95 °C
105 °C
Max Turbo Power Consumption
-
160 W
CPU Performance
Performance Cores
10
6
Performance Core Threads
20
6
Performance Core Base Frequency
3.3 GHz
2.9 GHz
Performance Core Turbo Frequency
4.3 GHz
5.1 GHz
Total Core Count
10
18
Total Thread Count
20
18
Bus Frequency
100 MHz
100 MHz
Multiplier
33x
29
L1 Cache
64 K per core
192 K per core
L2 Cache
1 MB per core
2 MB per core
L3 Cache
14 MB shared
30 MB shared
Unlocked Multiplier
Yes
Yes
Efficiency Cores
-
12
Efficiency Core Threads
-
12
Efficiency Core Base Frequency
-
2.5 GHz
Efficiency Core Turbo Frequency
-
4.5 GHz
Memory Parameters
Memory Types
DDR4-2666
DDR5-6400
Max Memory Size
128 GB
256 GB
Max Memory Channels
4
2
Max Memory Bandwidth
79.47 GB/s
102.4 GB/s
ECC Memory Support
No
No
Miscellaneous
Graphics Card Parameters
Integrated Graphics
-
true
GPU Base Frequency
-
300 MHz
GPU Max Dynamic Frequency
-
1800 MHz
Shader Units
-
512
Texture Units
-
32
Raster Operation Units
-
16
Execution Units
-
64
Power Consumption
-
14
📊 Benchmark
Cinebench R23
1,203
-
Cinebench R23
14,998
-
Geekbench 6
1,323
2,940
Geekbench 6
8,536
15,262
Passmark CPU
2,556
-
Passmark CPU
20,991
-
Cinebench 2024
-
130
Cinebench 2024
-
1,761