Home > CPU Comparison > Ryzen 9 8945HS or Ryzen 7 7840HS: what's better?

AMD Ryzen 9 8945HS vs Ryzen 7 7840HS

60 out of 100
AMD Ryzen 9 8945HS
VS
61 out of 100
AMD Ryzen 7 7840HS
AMD Ryzen 9 8945HS
AMD Ryzen 7 7840HS

We compared two 8-core laptop CPUs: the 4.0 GHz AMD Ryzen 9 8945HS against the 3.8 GHz Ryzen 7 7840HS. On this page, you'll find out which processor has better performance in benchmarks, games and other useful information.

  1. Review
  2. Differences
  3. Performance
  4. Specs
  5. Comments

Review

General overview and comparison of the processors
Single-Core Performance
Performance in single-threaded apps and benchmarks
Multi-Core Performance
Measure performance when all cores are involved
Power Efficiency
The efficiency score of power consumption
Integrated Graphics
iGPU capabilities for gaming and 3D-intensive tasks
DeviceFacts Final Score
Choose your main usage scenario to recalculate the Final Score and see which CPU suits your needs.
πŸ”Œ Usage Scenario:

Key Differences

What are the key differences between 7840HS and 8945HS
Advantages of AMD Ryzen 9 8945HS
  • Newer - released 11 months later
  • 2% higher Turbo Boost frequency (5.2 GHz vs 5.1 GHz)

Test in Benchmarks

Comparing the performance of CPUs across various tasks
CPU:
Ryzen 9 8945HS
vs
Ryzen 7 7840HS

Cinebench

Reputable cross-platform benchmark for high-performance processors
Cinebench 2024 (Single)
Cinebench 2024 (Multi)
Cinebench Scores (172nd and 182nd place)
Submit your benchmark results

GeekBench v6

The new version of this benchmark emulates common operations often used in real-world apps
Geekbench 6 (Single-Core)
Geekbench 6 (Multi-Core)
Ryzen 9 8945HS
11875
Ryzen 7 7840HS +2%
12085
File compression 494.2 MB/sec 1120 MB/sec
Clang compilation 92.7 Klines/sec 102.5 Klines/sec
HTML 5 Browser 287.4 pages/sec 217.2 pages/sec
PDF Renderer 280.8 Mpixels/sec 350 Mpixels/sec
Text processing 251.5 pages/sec 251.8 pages/sec
Background blur 65.5 images/sec 59.4 images/sec
Photo processing 104.2 images/sec 87.6 images/sec
Ray tracing 27.1 Mpixels/sec 22.5 Mpixels/sec
Sources: GeekBench [1], [2] – 119 & 753 samples

PassMark

Synthetic test that focuses on raw computational performance for low-level functions
Passmark CPU (Single-Core)
Passmark CPU (Multi-Core)
Ryzen 9 8945HS +3%
29254
Ryzen 7 7840HS
28292
Integer math 99.6 GOps/sec 97.1 GOps/sec
Floating point math 60.7 GOps/sec 59 GOps/sec
Find prime numbers 90M Primes/sec 87M Primes/sec
Random string sorting 42.5M Strings/sec 40.4M Strings/sec
Data encryption 20.9 GBytes/sec 20.3 GBytes/sec
Data compression 349.6 MBytes/sec 340.4 MBytes/sec
Physics 1409 Frames/sec 1362 Frames/sec
Extended instructions 26.4B Matrices/sec 25.4B Matrices/sec
Sources: PassMark [3], [4] – 1472 & 4310 samples

Blender

3D rendering test that measures CPU performance in 3D modeling tasks (uses all cores)
Blender CPU

Performance Per Watt

Shows the score you get per each watt of PL1 TDP
Cinebench 2024 / Watt 17.5 PPW 16.9 PPW
Geekbench 6 Multi / Watt 219.9 PPW 223.8 PPW
Passmark CPU Mark / Watt 541.7 PPW 523.9 PPW
Blender / Watt 4.05 PPW 4.05 PPW
These are rough calculations, as most CPUs surpass PL1 TDP wattage even in multicore workloads.

Recent User Tests

The latest benchmark tests that have been submitted by users
AMD Ryzen 9 8945HS
DateBenchmarkResult
πŸ“˜ 2025-08-12 (Ash)Cinebench 2024100 / 870
πŸ“˜ 2025-07-14 (END)Cinebench 2024105 / 943
Add View all (2)
AMD Ryzen 7 7840HS
DateBenchmarkResult
πŸ“˜ 2025-12-08 (Hari)Cinebench 2024104 / 880
πŸ“˜ 2025-07-31 (Safi ullah)Cinebench 2024102 / 911
πŸ“˜ 2025-06-10 (Johns)Cinebench 2024105 / 929
πŸ“˜ 2025-04-05 (KaniastyGucio)Cinebench 2024100 / 910
πŸ“˜ 2024-12-09 (Anand)Cinebench 202472 / 719
Add View all (11)

Specifications

Full technical specification of AMD Ryzen 9 8945HS and Ryzen 7 7840HS

General

Vendor Amd Amd
Released December 6, 2023 January 4, 2023
Type Laptop Laptop
Instruction Set x86-64 x86-64
Codename Zen 4 (Hawk Point) Zen 4 (Phoenix)
Integrated GPU Radeon 780M Radeon 780M
Rival Equivalent - Intel Core Ultra 9 185H - Intel Core i7 13620H
Successor - AMD Ryzen 9 270 - AMD Ryzen 7 8840HS
AMD Ryzen CPU ranking (65th and 61st place)

CPU

Performance Cores
P-Cores 8 8
P-Threads 16 16
Base Frequency (P) 4.0 GHz 3.8 GHz
Turbo Boost Frequency (P) 5.2 GHz 5.1 GHz
Total
Total Cores 8 8
Total Threads 16 16
Bus Frequency 100 MHz 100 MHz
Multiplier 40x 38x
L1 Cache 64K (per core) 64K (per core)
L2 Cache 1MB (per core) 1MB (per core)
L3 Cache 16MB (shared) 16MB (shared)
Unlocked Multiplier No No

Package

Transistors 25 billions 25 billions
Fabrication Process 4 nm 4 nm
TDP (PL1) 35-54 W (configurable) 35-54 W (configurable)
Socket FP8 FP8
Peak Temperature 100Β°C 100Β°C
Laptop processors ranking (104th and 91st place)

iGPU

Integrated Graphics Radeon 780M Radeon 780M
GPU Base Clock 800 MHz 800 MHz
GPU Boost Clock 2800 MHz 2700 MHz
Shading Units 768 768
TMUs 48 48
ROPs 32 32
Execution Units 12 12
TGP 15 W 15 W
iGPU FLOPS
Ryzen 9 8945HS +5%
4.3 TFLOPS
Ryzen 7 7840HS
4.1 TFLOPS
See: Radeon 780M benchmarks

Memory Support

Memory Types - DDR5-5600
- LPDDR5x-7500		 - DDR5-5600
- LPDDR5x-7500
Max. Memory Size 256 GB 256 GB
Memory Channels 2 2
ECC Support No Yes

Misc

Official Site AMD Ryzen 9 8945HS official page AMD Ryzen 7 7840HS official page
PCI Express Version 4.0 4.0
PCI Express Lanes 20 20
Further details
Notes on Ryzen 7 7840HS:
    - DDR5 memory is supported only on the FP7r2 socket, while FP7 and FP8 sockets support LPDDR5/x.
    - ECC support is available exclusively on the FP7r2 socket.

Cast your vote

Choose between two processors
56 (25.8%)
161 (74.2%)
Total votes: 217

Competitors

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3. AMD Ryzen 9 8945HS vs Intel Core Ultra 7 155H
4. AMD Ryzen 7 7840HS vs AMD Ryzen 9 7940HS (9)
5. AMD Ryzen 7 7840HS vs Intel Core i7 13700H (16)
6. AMD Ryzen 7 7840HS vs Intel Core Ultra 7 155H (4)
7. AMD Ryzen 7 7840HS vs AMD Ryzen 7 7735HS (4)
8. AMD Ryzen 7 7840HS vs AMD Ryzen 7 8845HS (12)
9. AMD Ryzen 7 7840HS vs Intel Core i7 13620H
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Comments

So which CPU will you choose: AMD Ryzen 7 7840HS or Ryzen 9 8945HS?
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