AMD Ryzen 7 8840HS vs AMD Ryzen 9 7945HX

Compared 2 processors: AMD Ryzen 7 8840HS, vs AMD Ryzen 9 7945HX. Below are specs, tests, pros and cons for each device

Review

Key Specs AMD Ryzen 7 8840HS and AMD Ryzen 9 7945HX
Single-Thread Perf.
Single-Core Benchmark Score
Multi-Thread Perf.
Multi-Core Benchmark Score
Energy Efficiency
Chip Power Efficiency
Integrated Graphics
iGPU Performance in Games & 3D
NanoReview Score
Overall score by NanoReview

Tests & specs

Specs & test comparison

Benchmarks

CPU performance comparison across tasks
Cinebench R23
Cinebench R23 (Single-Core)
AMD Ryzen 7 8840HS
1737
AMD Ryzen 9 7945HX
1951
Cinebench R23 (Multi-Core)
AMD Ryzen 7 8840HS
13888
AMD Ryzen 9 7945HX
34333
Cinebench 2024
Cinebench 2024 (Single-Core)
AMD Ryzen 7 8840HS
99
AMD Ryzen 9 7945HX
113
Cinebench 2024 (Single-Core)
AMD Ryzen 7 8840HS
677
AMD Ryzen 9 7945HX
1715
PassMark
PassMark CPU (Single-Core)
AMD Ryzen 7 8840HS
3621
AMD Ryzen 9 7945HX
4062
PassMark CPU (Multi-Core)
AMD Ryzen 7 8840HS
24679
AMD Ryzen 9 7945HX
54927
Integer Math90.5 GOps/s209.3 GOps/s
Floating-Point Math52.3 GOps/s124.6 GOps/s
Prime Number Search78 M primes/s286 M primes/s
Random String Sort34.7 M strings/s81.9 M strings/s
Data Encryption17.5 GB/s43.1 GB/s
Data Compression288.2 MB/s714 MB/s
Physics1132 frames/s2497 frames/s
Extended Instructions202 M matrices/s524 M matrices/s
GeekBench v6
Geekbench 6 (Single-Core)
AMD Ryzen 7 8840HS
2551
AMD Ryzen 9 7945HX
2792
Geekbench 6 (Multi-Core)
AMD Ryzen 7 8840HS
9653
AMD Ryzen 9 7945HX
15923
File Compression714.9 MB/s1290 MB/s
Clang Compilation87.9 KLines/s194.3 KLines/s
HTML5 Browser182.5 pages/s247.1 pages/s
PDF Rendering280.1 MP/sec430.6 MP/sec
Text Processing271.4 pages/s280.3 pages/s
Background Blur44.8 frames/s61.1 frames/s
Photo Processing70.1 frames/s94.7 frames/s
Ray Tracing19.2 MP/sec44.4 MP/sec

Blender

Real-world 3D modeling test
Blender CPU
AMD Ryzen 7 8840HS
167.7
AMD Ryzen 9 7945HX
472.26

Performance/Watt

Points per watt of PL1 TDP
Geekbench 6 Multi / W 321.8 PPW 212.3 PPW
PassMark CPU / W 822.6 PPW 732.4 PPW
Cinebench 2024 / W 22.6 PPW 22.9 PPW
Blender / W 5.59 PPW 6.3 PPW

General Info

Manufacturer AMD AMD
Announced December, 6, 2023 January, 4, 2023
Type Laptop use Laptop use
Architecture x86-64 x86-64
Codename Zen 4 (Hawk Point) Zen 4 (Dragon Range)
Integrated GPU Radeon 780M Radeon 610M

Processor

Performance cores
Cores 8 16
Threads 16 32
Frequency 3.3 GHz 2.5 GHz
Max Frequency (Turbo) 5.1 GHz 5.4 GHz
General
Cores count816
Threads count1632
Bus frequency100 MHz100 MHz
Multiplier33x25x
L1 cache64 KB/core64 KB/core
L2 cache1000 KB/core1000 KB/core
L3 Cache16 MB total64 MB total
Unlocked multiplierNoYes

Package

Transistor count 25 billion 13.1 billion
Process tech. 4 nm 5 nm
Power (TDP) 20-30 W 55-75 W
Socket FP8 FL1
Critical temp. 100 °C 100 °C

Memory Support

Memory Type - DDR5-5600
- LPDDR5x-7500
DDR5-5200
Max Size 256 GB 64 GB
Channels 2 2
ECC support No No

Other

PCIe Version 4.0 5.0
Max PCIe Lanes 20 28

Results

After analyzing the data, we consider AMD Ryzen 9 7945HX the clear winner in this comparison.

Survey

Which CPU would you pick?
1 (100%)
0 (0%)
Total Votes: 1

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