AMD Ryzen 5 7645HX vs Intel Core Ultra 7 251HX
CPU · Specs Compare
General Parameters
Release Date
Jan 2023
Apr 2026
Manufacturer
AMD
Intel
Type
Laptop
Laptop
Instruction Set
x86-64
x86-64
Core Architecture
Zen 4 (Dragon Range)
Arrow Lake
Integrated Graphics
Radeon 610M
Arc Graphics (4-Cores)
Processor Number
—
251HX
Package
Manufacturing Process
5 nm
3 nm
Socket
FL1
FCBGA-2114
Power Consumption
45-75 W
45-55 W
Peak Operating Temperature
100°C
105 °C
Max Turbo Power Consumption
—
160 W
CPU Performance
Performance Cores
6
6
Performance Core Threads
12
6
Performance Core Base Frequency
4.0 GHz
2.9 GHz
Performance Core Turbo Frequency
5 GHz
5.1 GHz
Total Core Count
6
18
Total Thread Count
12
18
Bus Frequency
100 MHz
100 MHz
Multiplier
40x
29
L1 Cache
64 K per core
192 K per core
L2 Cache
1 MB per core
2 MB per core
L3 Cache
32 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
DDR5-5200
DDR5-6400
Max Memory Size
64 GB
256 GB
Max Memory Channels
2
2
Max Memory Bandwidth
83.2 GB/s
102.4 GB/s
ECC Memory Support
No
No
Graphics Card Parameters
Integrated Graphics
true
true
GPU Base Frequency
1500 MHz
300 MHz
GPU Max Dynamic Frequency
2200 MHz
1800 MHz
Shader Units
128
512
Texture Units
8
32
Raster Operation Units
4
16
Execution Units
2
64
Power Consumption
15 W
14
Miscellaneous
PCIe Version
5.0
5.0
PCIe Lanes
28
24
Benchmark
Cinebench R23
1,800
—
Cinebench R23
13,954
—
Geekbench 6
2,720
2,940
Geekbench 5
1,895
—
Geekbench 6
11,906
15,262
Geekbench 5
11,141
—
Cinebench 2024
—
130
Cinebench 2024
—
1,761
▲ Specs Compare
Data sourced from official specifications and benchmark tests.