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AMD Ryzen 9 6900HX vs AMD Ryzen 9 7945HX Comparison

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CPU to replace
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AMD Ryzen 9 6900HX

8 Cores | January 2022

AMD Ryzen 9 6900HX
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AMD Ryzen 9 7945HX

16 Cores 16 Cores | January 2023

AMD Ryzen 9 7945HX
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AMD Ryzen 9 6900HX vs AMD Ryzen 9 7945HX Comparison Overview
AMD Ryzen 9 6900HX AMD Ryzen 9 6900HX
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AMD Ryzen 9 7945HX AMD Ryzen 9 7945HX
See at AMAZON
AMD Ryzen 9 6900HX
See at AMAZON
AMD Ryzen 9 7945HX
See at AMAZON

In this review, we will be comparing Ryzen 9 6900HX and Ryzen 9 7945HX, two CPUs by AMD. AMD Ryzen 9 6900HX was introduced to market in January 2022 and AMD Ryzen 9 7945HX was launched in January 2023. There is 12 months difference between Ryzen 9 6900HX and Ryzen 9 7945HX so it would still give an advantage to younger Ryzen 9 7945HX.

Ryzen 9 6900HX and Ryzen 9 7945HX are members of AMD's Ryzen 9 series of CPUs. Below you can find the latest models from this series.

AMD Ryzen 9 Series History
Model Release Date Fabrication Process Cores / Threads
AMD Ryzen 9 8945HS
  
December 2023 4nm 8 / 16
AMD Ryzen 9 7945HX3D
  
August 2023 5nm 16 / 32
AMD Ryzen 9 7900
  
January 2023 5nm 12 / 24
AMD Ryzen 9 7940HS
  
January 2023 4nm 8 / 16
AMD Ryzen 9 7945HX
January 2023 5nm 16 / 32
AMD Ryzen 9 7845HX
  
January 2023 5nm 12 / 24
AMD Ryzen 9 7950X3D
  
January 2023 5nm 16 / 32
AMD Ryzen 9 7900X3D
  
January 2023 5nm 12 / 24

Here is a brief look at the main features of AMD Ryzen 9 6900HX and AMD Ryzen 9 7945HX before getting into our more detailed comparison.

AMD Ryzen 9 6900HX Key Specs

  • Launched in January 2022
  • Laptop Type CPU
  • Cores / Threads: 8 / 16
  • Fabrication Process: 6 nm
  • Max RAM Support: 64 GB

AMD Ryzen 9 7945HX Key Specs

  • Launched in January 2022
  • Laptop Type CPU
  • Cores / Threads: 16 / 32
  • Fabrication Process: 5 nm
  • Max RAM Support: 64 GB

Let's read on the following sections in order to better understand in detail how Ryzen 9 6900HX and Ryzen 9 7945HX compares and decide which one is better for you.

**This post contains affiliate links and I will be compensated if you make a purchase after clicking through my links. As an Amazon Associate I earn from qualifying purchases.

Reasons to choose AMD Ryzen 9 6900HX over AMD Ryzen 9 7945HX
GPU Base Clock
3.3 GHz vs 2.5 GHz 0.8 GHz faster Base Clock
Thermal Design Power (TDP)
45 W vs 55 W More Energy Efficiency at Base Clock Speed
Reasons to choose AMD Ryzen 9 7945HX over AMD Ryzen 9 6900HX
Tecnology
5 nm vs 6 nm More transistors in the same volume
Release Date
January, 2023 vs January, 2022 Newer Product
GPU Boost Clock
5.4 GHz vs 4.9 GHz 0.5 GHz faster Boost Clock
Cores
16 vs 8 More Cores, Good Multitasking
Threads
32 vs 16 More Threads, Good Multitasking
Performance Cores / Threads
16 / 32 vs 8 / 16 More Performance Cores and Threads

Common Strengths of AMD Ryzen 9 7945HX and AMD Ryzen 9 6900HX
CPU Base Clock Speeds
3.3 GHz vs 2.5 GHz Over Average
Fabrication Process
6 nm vs 5 nm Below Average
Integrated GPU
Yes vs Yes Has Integrated GPU
Unlocked Multiplier
Yes vs Yes Overclocking capability
Common Weaknesses of AMD Ryzen 9 7945HX and AMD Ryzen 9 6900HX
Launch Dates
January 2022 vs January 2023 CPUs are older than 1 year
AMD Ryzen 9 6900HX vs AMD Ryzen 9 7945HX: Specs Comparison Table

In this section, we will be comparing the specifications the AMD Ryzen 9 6900HX and the AMD Ryzen 9 7945HX.

Processor
Brand AMD AMD
Model Ryzen 9 6900HX Ryzen 9 7945HX
Release Date 2022-01-04 2023-01-04
Type Laptop Laptop
CPU Fabrication Process 6 nm 5 nm
Integrated GPU Radeon 680M Radeon 610M
Instruction Set x86-64 x86-64
Code Name Zen 3+ (Rembrandt) Zen 4 (Dragon Range)
Memory
Max Memory Supported 64 GB 64 GB
Supported Memory Type DDR5-4800, LPDDR5-6400 DDR5-5200
L1 Cache 64K (per core) 64K (per core)
L2 Cache 512K (per core) 1MB (per core)
L3 Cache 16MB (shared) 64MB (shared)
ECC Support No No
Memory Channels 2 2
Cores & Clock Speeds
Cores / Threads 8 / 16 16 / 32
Perf. Cores / Threads 8 / 16 16 / 16
Base Frequency 3.3 GHz 2.5 GHz
Turbo Frequency 4.9 GHz 5.4 GHz
Multiplier 33x 25x
Unlocked Multiplier Yes Yes
Connections and Others
Base TDP 45 W 55 W
Peak Temperature 95 °C 100 °C
Socket FP7 FL1
PCI Express Version 4.0 5.0
PCI Express Lanes 20 28
Integrated GPU Specs
IGP Name Radeon 680M Radeon 610M
GPU Base Clock 2000 1500
GPU Boost Clock 2400 2200
TGP 15 W 15 W
FLOPS 3.686 TFLOPS 0.49 TFLOPS
ShadingUnitsCores 768 128
TMUs 48 8
ROPs 32 4
Execution_units 12 2
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