AMD Ryzen 9 8945HX vs Intel Core Ultra 7 251HX — Specifications, performance, tests

Differences
Specifications Benchmarks Testimonials

Differences

Reasons to consider
AMD Ryzen 9 8945HX

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Higher turbo clock speed

Around 6% higher specified turbo frequency

5.4 GHz 5.1 GHz

Reasons to consider
Intel Core Ultra 7 251HX

Report a bug

Higher clock speed

Around 16% better clock speed

2.9 GHz 2.5 GHz
More number of cores

2 more cores

18 16

Specifications

Technical data

AMD Ryzen 9 8945HX

Intel Core Ultra 7 251HX

CPU family and group

Background information about the processors being compared, series, generation and market segment.

Family

Ryzen Intel Core Ultra Series 2
Form Factor

Laptops / Desktops -
Segment

Mobile Mobile
Series

Ryzen 8000 Series -

CPU Technical specs

Core counts, threads, cache and clock modes describe the CPU configuration. Performance depends on the workload and comparable measured results.

Base Frequency

2.5 GHz -
CPU Cores

16 18
CPU Threads

32 18
Max. Boost Clock

5.4 GHz 5.1 GHz
Overclocking

Yes -
E-core Base Clock

- 2.5 GHz
Efficient Cores

- 12
Low Power Efficient-cores

- 0
P-core Base Clock

- 2.9 GHz
Performance Cores

- 6

IGPU

Internal Graphics does not affect the performance of the CPU, performs the work of the graphics card in its absence or on mobile devices.

GPU Frequency

2200 MHz -
GPU name

AMD Radeon 610M -
Graphics Cores

2 -
GPU Turbo

- 1800 MHz

Memory specs & PCI

Types, channel quantity of RAM supported by Intel Core Ultra 7 251HX and AMD Ryzen 9 8945HX. Depending on the motherboards, higher or lower memory frequencies may be supported.

Memory channels

2 2
Memory type

DDR5 Up to DDR5 6400 MT/s
PCIe

PCIe 5.0 -
Max. Memory

- 256 GB

Thermal Management

Compare the TDP requirements of TDP AMD Ryzen 9 8945HX and Intel Core Ultra 7 251HX Power specifications describe different manufacturer limits. TDP, base power and maximum turbo power are separate values; they do not establish measured system consumption.

Configurable TDP

55-75 W -
Default TDP

55 W -
Maximum Operating Temperature

100 °C -
Maximum Turbo Power

- 160 W
TDP (PL1 / PBP, legacy combined label)

- 55 W

Technologies and extensions

Architecture, interfaces, additional instructions supported by AMD Ryzen 9 8945HX and Intel Core Ultra 7 251HX, virtual machine technologies and process technology.

Codename

Dragon Range -
L2-Cache

16 MB -
L3-Cache

64 MB 30 MB
Release date

2025-04-23 Q1/2026
Socket

FL1 FCBGA2114
Technology

TSMC 5nm FinFET -

Benchmarks

Performance tests CPUs

Individual model tests

These results have no shared test of both models with the same version and settings. They are shown separately without a percentage difference.

AMD Ryzen 9 8945HX

Blender 5.1.0 / CPU / Windows 505.323591 samples/min
Blender 5.1.1 / CPU / Windows 537.068313 samples/min
Blender 5.2.0 / CPU / Windows 514.644755 samples/min

Intel Core Ultra 7 251HX

Individual system tests

Results were obtained on the reported systems. Test versions and settings remain separate; incomplete conditions do not support calculated model performance differences.

RandomX / XMRig 6.26.0 / 1M / 32 threads / windows

Model	Result	Reported conditions
AMD Ryzen 9 8945HX	22125.851845 H/s	RandomX / XMRig 6.26.0 / 1M / 32 threads / windows System RAM: 32 GB OS: Windows NT 10.0 Duration: 45.196 s User-submitted run; tuning and power settings are incomplete.