Home > CPU Comparison > Ryzen 9 9955HX or Ryzen 9 7945HX: what's better?

AMD Ryzen 9 9955HX vs Ryzen 9 7945HX

82 out of 100
AMD Ryzen 9 9955HX
VS
74 out of 100
AMD Ryzen 9 7945HX
AMD Ryzen 9 9955HX
AMD Ryzen 9 7945HX

We compared two 16-core laptop CPUs: the 2.5 GHz AMD Ryzen 9 9955HX against the 2.5 GHz Ryzen 9 7945HX. 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 7945HX and 9955HX
Advantages of AMD Ryzen 9 9955HX
  • Newer - released 2 years and 1 month later
  • Supports up to 96 GB DDR5-5600 RAM
  • More modern manufacturing process – 4 versus 5 nanometers
  • 13% faster in a single-core Geekbench v6 test - 3273 vs 2901 points

Test in Benchmarks

Comparing the performance of CPUs across various tasks
CPU:
Ryzen 9 9955HX
vs
Ryzen 9 7945HX

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 41st 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 +9%
19448
Ryzen 9 7945HX
17828
File compression 1520 MB/sec 1590 MB/sec
Clang compilation 222.1 Klines/sec 190.6 Klines/sec
HTML 5 Browser 329.3 pages/sec 320.2 pages/sec
PDF Renderer 545.2 Mpixels/sec 474.8 Mpixels/sec
Text processing 341.3 pages/sec 296.8 pages/sec
Background blur 70.4 images/sec 66.1 images/sec
Photo processing 123 images/sec 114.8 images/sec
Ray tracing 53.8 Mpixels/sec 43 Mpixels/sec
Sources: GeekBench [1], [2] – 677 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 +4%
56301
Ryzen 9 7945HX
53917
Integer math 213 GOps/sec 205.1 GOps/sec
Floating point math 137 GOps/sec 122.1 GOps/sec
Find prime numbers 288M Primes/sec 280M Primes/sec
Random string sorting 78.1M Strings/sec 81.4M Strings/sec
Data encryption 37.4 GBytes/sec 42.2 GBytes/sec
Data compression 734.3 MBytes/sec 699.1 MBytes/sec
Physics 2722 Frames/sec 2450 Frames/sec
Extended instructions 58.2B Matrices/sec 51.2B Matrices/sec
Sources: PassMark [3], [4] – 680 & 2890 samples

Blender

3D rendering test that measures CPU performance in 3D modeling tasks (uses all cores)
Blender CPU
Ryzen 9 9955HX +14%
539.16
Ryzen 9 7945HX
472.26

Performance Per Watt

Shows the score you get per each watt of PL1 TDP
Cinebench 2024 / Watt 27.9 PPW 24.5 PPW
Geekbench 6 Multi / Watt 259.3 PPW 237.7 PPW
Passmark CPU Mark / Watt 750.7 PPW 718.9 PPW
Blender / Watt 7.19 PPW 6.3 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 7945HX
DateBenchmarkResult
πŸ“˜ 2025-11-02 (Qwerrty574)Geekbench 6 CPU2949 / 17981
πŸ“˜ 2025-11-02 (Qwerrty574)Cinebench 2024116 / 1901
πŸ“˜ 2025-04-02 (ceratogyrus35)Cinebench 2024114 / 1834
πŸ“˜ 2025-02-18 (Baka)Cinebench 2024112 / 1552
Add View all (4)

Specifications

Full technical specification of AMD Ryzen 9 9955HX and Ryzen 9 7945HX

General

Vendor Amd Amd
Released January 7, 2025 January 4, 2023
Type Laptop Laptop
Instruction Set x86-64 x86-64
Codename Zen 5 (Fire Range) Zen 4 (Dragon Range)
Model number 9955HX -
Integrated GPU Radeon 610M Radeon 610M
Rival Equivalent - Intel Core Ultra 9 285HX - Intel Core i9 13950HX
AMD Ryzen CPU ranking (9th and 24th place)

CPU

Performance Cores
P-Cores 16 16
P-Threads 32 32
Base Frequency (P) 2.5 GHz 2.5 GHz
Turbo Boost Frequency (P) 5.4 GHz 5.4 GHz
Total
Total Cores 16 16
Total Threads 32 32
Bus Frequency 100 MHz 100 MHz
Multiplier 25x 25x
L1 Cache 80K (per core) 64K (per core)
L2 Cache 1MB (per core) 1MB (per core)
L3 Cache 64MB (shared) 64MB (shared)
Unlocked Multiplier Yes Yes

Package

Transistors - 13.1 billions
Fabrication Process 4 nm 5 nm
TDP (PL1) 55-75 W (configurable) 55-75 W (configurable)
Max. Boost TDP (PL2) 101 W -
Socket FL1 FL1
Peak Temperature 100Β°C 100Β°C
Laptop processors ranking (17th and 36th place)

iGPU

Integrated Graphics Radeon 610M Radeon 610M
GPU Base Clock 400 MHz 400 MHz
GPU Boost Clock 2200 MHz 2200 MHz
Shading Units 128 128
TMUs 8 8
ROPs 4 4
Execution Units 2 2
TGP 15 W 15 W
iGPU FLOPS
Ryzen 9 9955HX
0.6 TFLOPS
Ryzen 9 7945HX
0.6 TFLOPS
See: Radeon 610M benchmarks

Memory Support

Memory Types - DDR5-5600 - DDR5-5200
Max. Memory Size 96 GB 64 GB
Memory Channels 2 2
ECC Support Yes No

Misc

Official Site AMD Ryzen 9 9955HX official page AMD Ryzen 9 7945HX official page
PCI Express Version 5.0 5.0
PCI Express Lanes 28 28

Cast your vote

Choose between two processors
79 (72.5%)
30 (27.5%)
Total votes: 109

Competitors

1. AMD Ryzen 9 7945HX vs AMD Ryzen 9 8940HX
2. AMD Ryzen 9 7945HX vs Intel Core i9 14900HX (5)
3. AMD Ryzen 9 7945HX vs AMD Ryzen 9 8945HS
4. AMD Ryzen 9 7945HX vs Intel Core i7 14650HX
5. AMD Ryzen 9 7945HX vs Intel Core i7 14700HX
6. AMD Ryzen 9 9955HX vs AMD Ryzen 9 8940HX
7. AMD Ryzen 9 9955HX vs Intel Core i9 14900HX (1)
8. AMD Ryzen 9 9955HX vs Intel Core Ultra 9 275HX (7)
9. AMD Ryzen 9 9955HX vs AMD Ryzen 9 9955HX3D
10. AMD Ryzen 9 9955HX vs Intel Core Ultra 9 285HX
Compare other CPUs (460+)

Comments

So which CPU will you choose: AMD Ryzen 9 7945HX or Ryzen 9 9955HX?
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