Home > CPU Comparison > Ryzen 9 9955HX3D or Ryzen 9 7945HX: what's better?

AMD Ryzen 9 9955HX3D vs Ryzen 9 7945HX

82 out of 100
AMD Ryzen 9 9955HX3D
VS
74 out of 100
AMD Ryzen 9 7945HX
AMD Ryzen 9 9955HX3D
AMD Ryzen 9 7945HX

We compared two 16-core laptop CPUs: the 2.5 GHz AMD Ryzen 9 9955HX3D 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 9955HX3D
Advantages of AMD Ryzen 9 9955HX3D
  • Newer - released 2 years later
  • Has 64 MB larger L3 cache size, helping fully utilize a high-end GPU in gaming
  • Supports up to 96 GB DDR5-5600 RAM
  • More modern manufacturing process – 4 versus 5 nanometers
  • 10% faster in a single-core Geekbench v6 test - 3181 vs 2901 points

Test in Benchmarks

Comparing the performance of CPUs across various tasks
CPU:
Ryzen 9 9955HX3D
vs
Ryzen 9 7945HX

Cinebench

Reputable cross-platform benchmark for high-performance processors
Cinebench 2024 (Single)
Cinebench 2024 (Multi)
Cinebench Scores (14th 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 9955HX3D +13%
20117
Ryzen 9 7945HX
17828
File compression 1620 MB/sec 1590 MB/sec
Clang compilation 231.2 Klines/sec 190.6 Klines/sec
HTML 5 Browser 343 pages/sec 320.2 pages/sec
PDF Renderer 561.9 Mpixels/sec 474.8 Mpixels/sec
Text processing 348.1 pages/sec 296.8 pages/sec
Background blur 71.3 images/sec 66.1 images/sec
Photo processing 121.8 images/sec 114.8 images/sec
Ray tracing 56.2 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 9955HX3D +16%
62468
Ryzen 9 7945HX
53917
Integer math 222 GOps/sec 205.1 GOps/sec
Floating point math 143.8 GOps/sec 122.1 GOps/sec
Find prime numbers 525M Primes/sec 280M Primes/sec
Random string sorting 83.2M Strings/sec 81.4M Strings/sec
Data encryption 39.3 GBytes/sec 42.2 GBytes/sec
Data compression 783.3 MBytes/sec 699.1 MBytes/sec
Physics 4676 Frames/sec 2450 Frames/sec
Extended instructions 62.6B Matrices/sec 51.2B Matrices/sec
Sources: PassMark [3], [4] – 409 & 2890 samples

Blender

3D rendering test that measures CPU performance in 3D modeling tasks (uses all cores)
Blender CPU
Ryzen 9 9955HX3D +20%
565.95
Ryzen 9 7945HX
472.26

Performance Per Watt

Shows the score you get per each watt of PL1 TDP
Cinebench 2024 / Watt 28.8 PPW 24.5 PPW
Geekbench 6 Multi / Watt 268.2 PPW 237.7 PPW
Passmark CPU Mark / Watt 832.9 PPW 718.9 PPW
Blender / Watt 7.55 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 9955HX3D
DateBenchmarkResult
πŸ“˜ 2025-12-07 (Yolo)Cinebench 2024130 / 2160
πŸ“˜ 2025-10-21 (Sam)Cinebench 2024128 / 2105
Add View all (2)
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 9955HX3D 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 9955HX3D -
Integrated GPU Radeon 610M Radeon 610M
Rival Equivalent - - Intel Core i9 13950HX
AMD Ryzen CPU ranking (10th 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 128MB (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 (18th 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 9955HX3D
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 9955HX3D 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
13 (68.4%)
6 (31.6%)
Total votes: 19

Competitors

1. AMD Ryzen 9 9955HX3D vs Intel Core Ultra 9 275HX (6)
2. AMD Ryzen 9 9955HX3D vs AMD Ryzen 9 9955HX
3. AMD Ryzen 9 9955HX3D vs Intel Core Ultra 9 285H
4. AMD Ryzen 9 9955HX3D vs Intel Core Ultra 9 285HX (12)
5. AMD Ryzen 9 9955HX3D vs AMD Ryzen 9 7945HX3D
6. AMD Ryzen 9 7945HX vs AMD Ryzen 9 9955HX
7. AMD Ryzen 9 7945HX vs AMD Ryzen 9 8940HX
8. AMD Ryzen 9 7945HX vs Intel Core i7 14650HX
9. AMD Ryzen 9 7945HX vs Intel Core i9 14900HX (5)
10. AMD Ryzen 9 7945HX vs AMD Ryzen 9 8945HS
Compare other CPUs (460+)

Comments

So which CPU will you choose: AMD Ryzen 9 7945HX or Ryzen 9 9955HX3D?
🌐 Register your profile and become part of NanoReview community!
EnglishРусский