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AMD Ryzen 9 7945HX vs AMD Ryzen 9 9955HX: Comparison
Ryzen 9 7945HX vs Ryzen 9 9955HX release year compared
They are built to different briefs, and release year shows it, Ryzen 9 7945HX 2023 against Ryzen 9 9955HX 2025. They differ on igpu too, AMD Radeon 610M Graphics on the Ryzen 9 7945HX versus AMD Radeon 610M on the Ryzen 9 9955HX. There is a split on microarchitecture as well, Zen 4 on the Ryzen 9 7945HX versus Zen 5 on the Ryzen 9 9955HX. Base power is not the same on both, 55 W on the Ryzen 9 7945HX versus 55-75W on the Ryzen 9 9955HX. They differ on memory type too, DDR5 on the Ryzen 9 7945HX versus DDR5, 2-Channel on the Ryzen 9 9955HX.
Ryzen 9 7945HX vs Ryzen 9 9955HX: which one fits your build
The Ryzen 9 7945HX is the one to take for gaming laptops and mobile content creation, though it is not the pick for thin-and-light ultraportables and all-day battery life needs. The Ryzen 9 9955HX suits gaming laptops and mobile content creation, though it is the wrong buy for thin-and-light ultraportables and all-day battery life needs. Our rating of the Ryzen 9 7945HX (8.5/10): the AMD Ryzen 9 7945HX delivers desktop-class multi-core performance in a laptop form factor, ideal for demanding gaming and creation workloads. Our rating of the Ryzen 9 9955HX (8.5/10): the AMD Ryzen 9 9955HX delivers desktop-class multi-core performance in a laptop form factor, ideal for demanding gaming and creation workloads.
Where the two are identical
Everything else lines up. Total cores, performance cores, efficiency cores, total threads and p-core boost clock read the same on both, so those are not worth weighing. They match on 8 further specifications as well.
Frequently asked questions
Is the P-Core Base Clock the same on the Ryzen 9 7945HX and Ryzen 9 9955HX?
It is. Both are listed at 2.5 GHz, so it is not a reason to pick one over the other.
Specs and benchmarks
Form Factor
- AMD Ryzen 9 7945HX
- Laptop
- AMD Ryzen 9 9955HX
- Laptop
Codename
- AMD Ryzen 9 7945HX
- Dragon Range
- AMD Ryzen 9 9955HX
- Fire Range
Release Year
- AMD Ryzen 9 7945HX
- 2023
- AMD Ryzen 9 9955HX
- 2025
TDP
- AMD Ryzen 9 7945HX
- 55 W
- AMD Ryzen 9 9955HX
- 55 W
iGPU
- AMD Ryzen 9 7945HX
- AMD Radeon 610M Graphics (RDNA 2)
- AMD Ryzen 9 9955HX
- AMD Radeon 610M
Market Segment
- AMD Ryzen 9 7945HX
- Laptop
- AMD Ryzen 9 9955HX
- Laptop
Microarchitecture
- AMD Ryzen 9 7945HX
- Zen 4 (Dragon Range)
- AMD Ryzen 9 9955HX
- Zen 5 (Fire Range)
Socket
- AMD Ryzen 9 7945HX
- FL1
- AMD Ryzen 9 9955HX
- FL1
Process Node
- AMD Ryzen 9 7945HX
- 5 nm
- AMD Ryzen 9 9955HX
- TSMC 4nm FinFET
Total Cores
- AMD Ryzen 9 7945HX
- 16
- AMD Ryzen 9 9955HX
- 16
Performance Cores
- AMD Ryzen 9 7945HX
- 16
- AMD Ryzen 9 9955HX
- 16
Efficiency Cores
- AMD Ryzen 9 7945HX
- 0
- AMD Ryzen 9 9955HX
- 0
Total Threads
- AMD Ryzen 9 7945HX
- 32
- AMD Ryzen 9 9955HX
- 32
SMT Enabled
- AMD Ryzen 9 7945HX
- Yes
- AMD Ryzen 9 9955HX
- Yes
P-Core Base Clock
- AMD Ryzen 9 7945HX
- 2.5 GHz
- AMD Ryzen 9 9955HX
- 2.5 GHz
P-Core Boost Clock
- AMD Ryzen 9 7945HX
- 5.4 GHz
- AMD Ryzen 9 9955HX
- 5.4 GHz
L3 Cache
- AMD Ryzen 9 7945HX
- 64 MB
- AMD Ryzen 9 9955HX
- 64 MB
Base Power
- AMD Ryzen 9 7945HX
- 55 W
- AMD Ryzen 9 9955HX
- 55-75W
Memory Type
- AMD Ryzen 9 7945HX
- DDR5
- AMD Ryzen 9 9955HX
- DDR5, 2-Channel
Integrated Graphics
- AMD Ryzen 9 7945HX
- Yes
- AMD Ryzen 9 9955HX
- Yes
Which one should you pick?
Choose 7945HX if you want the higher L3 cache (64 MB vs 64 MB).
Choose 9955HX if you already have it on hand or find it at a lower price.
Verdict
AMD Ryzen 9 7945HX
8.5 / 10 Expert Rating
The AMD Ryzen 9 7945HX delivers desktop-class multi-core performance in a laptop form factor, ideal for demanding gaming and creation workloads.
AMD Ryzen 9 9955HX
8.5 / 10 Expert Rating
The AMD Ryzen 9 9955HX delivers desktop-class multi-core performance in a laptop form factor, ideal for demanding gaming and creation workloads.