Home > CPU Comparison > Ryzen 9 9955HX or Ryzen 9 8945HS: what's better?

AMD Ryzen 9 9955HX vs Ryzen 9 8945HS

82 out of 100
AMD Ryzen 9 9955HX
VS
60 out of 100
AMD Ryzen 9 8945HS
AMD Ryzen 9 9955HX
AMD Ryzen 9 8945HS

We compared two laptop CPUs: the 2.5 GHz AMD Ryzen 9 9955HX with 16-cores against the 4.0 GHz Ryzen 9 8945HS with 8-cores. 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
NanoReview 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 8945HS and 9955HX
Advantages of AMD Ryzen 9 9955HX
  • Has 48 MB larger L3 cache size, helping fully utilize a high-end GPU in gaming
  • Has 8 more physical cores
  • Unlocked multiplier
  • Newer - released 1 year and 2 months later
  • 37% faster in a single-core Geekbench v6 test - 3273 vs 2394 points
  • Newer PCI Express version – 5.0
  • 4% higher Turbo Boost frequency (5.4 GHz vs 5.2 GHz)
Advantages of AMD Ryzen 9 8945HS
  • More powerful Radeon 780M integrated graphics: 4.3 vs 0.6 TFLOPS
  • Supports up to 256 GB DDR5-5600 RAM

Test in Benchmarks

Comparing the performance of CPUs across various tasks
CPU:
Ryzen 9 9955HX
vs
Ryzen 9 8945HS

Cinebench

Reputable cross-platform benchmark for high-performance processors
Cinebench 2024 (Single)
Cinebench 2024 (Multi)
Cinebench 2026 (Single) 717 -
Cinebench 2026 (Multi) 8163 -
Cinebench Scores (16th and 172nd 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 9955HX +64%
19448
Ryzen 9 8945HS
11875
File compression 1520 MB/sec 494.2 MB/sec
Clang compilation 222.1 Klines/sec 92.7 Klines/sec
HTML 5 Browser 329.3 pages/sec 287.4 pages/sec
PDF Renderer 545.2 Mpixels/sec 280.8 Mpixels/sec
Text processing 341.3 pages/sec 251.5 pages/sec
Background blur 70.4 images/sec 65.5 images/sec
Photo processing 123 images/sec 104.2 images/sec
Ray tracing 53.8 Mpixels/sec 27.1 Mpixels/sec
Sources: GeekBench [1], [2] – 119 samples

PassMark

Synthetic test that focuses on raw computational performance for low-level functions
Passmark CPU (Single-Core)
Passmark CPU (Multi-Core)
Ryzen 9 9955HX +92%
56301
Ryzen 9 8945HS
29254
Integer math 213 GOps/sec 99.6 GOps/sec
Floating point math 137 GOps/sec 60.7 GOps/sec
Find prime numbers 288M Primes/sec 90M Primes/sec
Random string sorting 78.1M Strings/sec 42.5M Strings/sec
Data encryption 37.4 GBytes/sec 20.9 GBytes/sec
Data compression 734.3 MBytes/sec 349.6 MBytes/sec
Physics 2722 Frames/sec 1409 Frames/sec
Extended instructions 58.2B Matrices/sec 26.4B Matrices/sec
Sources: PassMark [3], [4] – 680 & 1472 samples

Blender

3D rendering test that measures CPU performance in 3D modeling tasks (uses all cores)
Blender CPU
Ryzen 9 9955HX +146%
539.16
Ryzen 9 8945HS
218.76

Performance Per Watt

Shows the score you get per each watt of PL1 TDP
Cinebench 2024 / Watt 27.9 PPW 17.5 PPW
Geekbench 6 Multi / Watt 259.3 PPW 219.9 PPW
Passmark CPU Mark / Watt 750.7 PPW 541.7 PPW
Blender / Watt 7.19 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 9955HX
DateBenchmarkResult
πŸ“˜ 2026-06-21 (Tino)Cinebench 2026717 / 8163
πŸ“˜ 2026-04-26 (Runzliger-Bert)Cinebench 2024128 / 2058
πŸ“˜ 2025-06-08 (Thebakedging)Cinebench 2024134 / 2091
Add View all (3)
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)

Specifications

Full technical specification of AMD Ryzen 9 9955HX and Ryzen 9 8945HS

General

Vendor Amd Amd
Released January 7, 2025 December 6, 2023
Type Laptop Laptop
Instruction Set x86-64 x86-64
Codename Zen 5 (Fire Range) Zen 4 (Hawk Point)
Model number 9955HX -
Integrated GPU Radeon 610M Radeon 780M
Rival Equivalent - Intel Core Ultra 9 285HX - Intel Core Ultra 9 185H
Successor - - AMD Ryzen 9 270
AMD Ryzen CPU ranking (9th and 65th place)

CPU

Performance Cores
P-Cores 16 8
P-Threads 32 16
Base Frequency (P) 2.5 GHz 4.0 GHz
Turbo Boost Frequency (P) 5.4 GHz 5.2 GHz
Total
Total Cores 16 8
Total Threads 32 16
Bus Frequency 100 MHz 100 MHz
Multiplier 25x 40x
L1 Cache 80K (per core) 64K (per core)
L2 Cache 1MB (per core) 1MB (per core)
L3 Cache 64MB (shared) 16MB (shared)
Unlocked Multiplier Yes No

Package

Transistors - 25 billions
Fabrication Process 4 nm 4 nm
TDP (PL1) 55-75 W (configurable) 35-54 W (configurable)
Max. Boost TDP (PL2) 101 W -
Socket FL1 FP8
Peak Temperature 100Β°C 100Β°C
Laptop processors ranking (17th and 104th place)

iGPU

Integrated Graphics Radeon 610M Radeon 780M
GPU Base Clock 400 MHz 800 MHz
GPU Boost Clock 2200 MHz 2800 MHz
Shading Units 128 768
TMUs 8 48
ROPs 4 32
Execution Units 2 12
TGP 15 W 15 W
iGPU FLOPS
Ryzen 9 9955HX
0.6 TFLOPS
Ryzen 9 8945HS +617%
4.3 TFLOPS
More info: Radeon 780M compared to Radeon 610M

Memory Support

Memory Types - DDR5-5600 - DDR5-5600
- LPDDR5x-7500
Max. Memory Size 96 GB 256 GB
Memory Channels 2 2
ECC Support Yes No

Misc

Official Site AMD Ryzen 9 9955HX official page AMD Ryzen 9 8945HS official page
PCI Express Version 5.0 4.0
PCI Express Lanes 28 20

Cast your vote

Choose between two processors
10 (76.9%)
3 (23.1%)
Total votes: 13

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4. AMD Ryzen 9 9955HX vs Intel Core Ultra 9 285HX
5. AMD Ryzen 9 9955HX vs AMD Ryzen 9 8940HX
6. AMD Ryzen 9 8945HS vs AMD Ryzen 9 7940HS (4)
7. AMD Ryzen 9 8945HS vs Intel Core i9 13900H (7)
8. AMD Ryzen 9 8945HS vs Intel Core i9 14900HX
9. AMD Ryzen 9 8945HS vs AMD Ryzen AI 9 HX 370 (7)
10. AMD Ryzen 9 8945HS vs Intel Core i7 13700H
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Comments

So which CPU will you choose: AMD Ryzen 9 8945HS or Ryzen 9 9955HX?
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