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AMD Ryzen 9 7945HX3D vs AMD Ryzen 9 8945HX: Comparison
What is the difference between Ryzen 9 7945HX3D and Ryzen 9 8945HX?
Start with l3 cache, because it is the widest measured gap between them: Ryzen 9 7945HX3D 128 MB against Ryzen 9 8945HX 64 MB, 50% in favour of Ryzen 9 7945HX3D. There is a split on p-core base clock as well, 2.3 GHz on the Ryzen 9 7945HX3D versus 2.5 GHz on the Ryzen 9 8945HX. They differ on release year too, 2023 on the Ryzen 9 7945HX3D versus 2025 on the Ryzen 9 8945HX. Igpu is not the same on both, AMD Radeon 610M Graphics on the Ryzen 9 7945HX3D versus AMD Radeon 610M on the Ryzen 9 8945HX.
Who each one is for
The Ryzen 9 7945HX3D is the one to take for high-end gaming laptops and mobile workstations, though it is not built for thin-and-light laptops and battery-focused ultraportables. Buy the Ryzen 9 8945HX for 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 7945HX3D (9.1/10): the AMD Ryzen 9 7945HX3D is the pinnacle of mobile gaming performance, bringing 3D V-Cache and desktop-class core counts to a laptop chassis. Our rating of the Ryzen 9 8945HX (8.5/10): the AMD Ryzen 9 8945HX delivers desktop-class multi-core performance in a laptop form factor, ideal for demanding gaming and creation workloads.
What Ryzen 9 7945HX3D and Ryzen 9 8945HX have in common
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 TDP the same on the Ryzen 9 7945HX3D and Ryzen 9 8945HX?
It is. Both are listed at 55 W, so it is not a reason to pick one over the other.
Specs and benchmarks
Form Factor
- AMD Ryzen 9 7945HX3D
- Laptop
- AMD Ryzen 9 8945HX
- Laptop
Codename
- AMD Ryzen 9 7945HX3D
- Dragon Range
- AMD Ryzen 9 8945HX
- Dragon Range
Release Year
- AMD Ryzen 9 7945HX3D
- 2023
- AMD Ryzen 9 8945HX
- 2025
TDP
- AMD Ryzen 9 7945HX3D
- 55 W
- AMD Ryzen 9 8945HX
- 55 W
iGPU
- AMD Ryzen 9 7945HX3D
- AMD Radeon 610M Graphics (RDNA 2)
- AMD Ryzen 9 8945HX
- AMD Radeon 610M
Market Segment
- AMD Ryzen 9 7945HX3D
- Laptop
- AMD Ryzen 9 8945HX
- Laptop
Microarchitecture
- AMD Ryzen 9 7945HX3D
- Zen 4 (7040/9955 Dragon Range)
- AMD Ryzen 9 8945HX
- Zen 4 (Dragon Range)
Socket
- AMD Ryzen 9 7945HX3D
- FL1
- AMD Ryzen 9 8945HX
- FL1
Process Node
- AMD Ryzen 9 7945HX3D
- 5 nm
- AMD Ryzen 9 8945HX
- 5 nm
Total Cores
- AMD Ryzen 9 7945HX3D
- 16
- AMD Ryzen 9 8945HX
- 16
Performance Cores
- AMD Ryzen 9 7945HX3D
- 16
- AMD Ryzen 9 8945HX
- 16
Efficiency Cores
- AMD Ryzen 9 7945HX3D
- 0
- AMD Ryzen 9 8945HX
- 0
Total Threads
- AMD Ryzen 9 7945HX3D
- 32
- AMD Ryzen 9 8945HX
- 32
SMT Enabled
- AMD Ryzen 9 7945HX3D
- Yes
- AMD Ryzen 9 8945HX
- Yes
P-Core Base Clock
- AMD Ryzen 9 7945HX3D
- 2.3 GHz
- AMD Ryzen 9 8945HX
- 2.5 GHz
P-Core Boost Clock
- AMD Ryzen 9 7945HX3D
- 5.4 GHz
- AMD Ryzen 9 8945HX
- 5.4 GHz
L3 Cache
- AMD Ryzen 9 7945HX3D
- 128 MBBest
- AMD Ryzen 9 8945HX
- 64 MB-50%
Base Power
- AMD Ryzen 9 7945HX3D
- 55 W
- AMD Ryzen 9 8945HX
- 55 W
Memory Type
- AMD Ryzen 9 7945HX3D
- DDR5
- AMD Ryzen 9 8945HX
- DDR5
Integrated Graphics
- AMD Ryzen 9 7945HX3D
- Yes
- AMD Ryzen 9 8945HX
- Yes
Which one should you pick?
Choose 7945HX3D if you want the higher L3 cache (128 MB vs 64 MB).
Choose 8945HX if you already have it on hand or find it at a lower price.
Verdict
AMD Ryzen 9 7945HX3D
9.1 / 10 Expert Rating
The AMD Ryzen 9 7945HX3D is the pinnacle of mobile gaming performance, bringing 3D V-Cache and desktop-class core counts to a laptop chassis.
AMD Ryzen 9 8945HX
8.5 / 10 Expert Rating
The AMD Ryzen 9 8945HX delivers desktop-class multi-core performance in a laptop form factor, ideal for demanding gaming and creation workloads.