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AMD Ryzen 9 7940HX vs AMD Ryzen 9 7945HX3D: Comparison
Ryzen 9 7940HX vs Ryzen 9 7945HX3D: the l3 cache difference
Start with l3 cache, because it is the widest measured gap between them: Ryzen 9 7940HX 64 MB against Ryzen 9 7945HX3D 128 MB, 50% in favour of Ryzen 9 7945HX3D. They differ on p-core boost clock too, 5.2 GHz on the Ryzen 9 7940HX versus 5.4 GHz on the Ryzen 9 7945HX3D. P-core base clock is not the same on both, 2.4 GHz on the Ryzen 9 7940HX versus 2.3 GHz on the Ryzen 9 7945HX3D. There is a split on release year as well, 2024 on the Ryzen 9 7940HX versus 2023 on the Ryzen 9 7945HX3D.
Who each one is for
The Ryzen 9 7940HX suits gaming laptops and mobile content creation, though it is the wrong buy for thin-and-light ultraportables and all-day battery life needs. The Ryzen 9 7945HX3D is the one to take for high-end gaming laptops and mobile workstations, though it is not the pick for thin-and-light laptops and battery-focused ultraportables. Our rating of the Ryzen 9 7940HX (8.5/10): the AMD Ryzen 9 7940HX delivers desktop-class multi-core performance in a laptop form factor, ideal for demanding gaming and creation workloads. 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.
What Ryzen 9 7940HX and Ryzen 9 7945HX3D have in common
Everything else lines up. Total cores, performance cores, efficiency cores, total threads and tdp read the same on both, so those are not worth weighing. They match on 8 further specifications as well.
Frequently asked questions
Is the Integrated Graphics the same on the Ryzen 9 7940HX and Ryzen 9 7945HX3D?
It is. Both are listed at Yes, so it is not a reason to pick one over the other.
Specs and benchmarks
Form Factor
- AMD Ryzen 9 7940HX
- Laptop
- AMD Ryzen 9 7945HX3D
- Laptop
Codename
- AMD Ryzen 9 7940HX
- Dragon Range
- AMD Ryzen 9 7945HX3D
- Dragon Range
Release Year
- AMD Ryzen 9 7940HX
- 2024
- AMD Ryzen 9 7945HX3D
- 2023
TDP
- AMD Ryzen 9 7940HX
- 55 W
- AMD Ryzen 9 7945HX3D
- 55 W
iGPU
- AMD Ryzen 9 7940HX
- AMD Radeon 610M Graphics (RDNA 2)
- AMD Ryzen 9 7945HX3D
- AMD Radeon 610M Graphics (RDNA 2)
Market Segment
- AMD Ryzen 9 7940HX
- Laptop
- AMD Ryzen 9 7945HX3D
- Laptop
Microarchitecture
- AMD Ryzen 9 7940HX
- Zen 4 (Dragon Range)
- AMD Ryzen 9 7945HX3D
- Zen 4 (7040/9955 Dragon Range)
Socket
- AMD Ryzen 9 7940HX
- FL1
- AMD Ryzen 9 7945HX3D
- FL1
Process Node
- AMD Ryzen 9 7940HX
- 5 nm
- AMD Ryzen 9 7945HX3D
- 5 nm
Total Cores
- AMD Ryzen 9 7940HX
- 16
- AMD Ryzen 9 7945HX3D
- 16
Performance Cores
- AMD Ryzen 9 7940HX
- 16
- AMD Ryzen 9 7945HX3D
- 16
Efficiency Cores
- AMD Ryzen 9 7940HX
- 0
- AMD Ryzen 9 7945HX3D
- 0
Total Threads
- AMD Ryzen 9 7940HX
- 32
- AMD Ryzen 9 7945HX3D
- 32
SMT Enabled
- AMD Ryzen 9 7940HX
- Yes
- AMD Ryzen 9 7945HX3D
- Yes
P-Core Base Clock
- AMD Ryzen 9 7940HX
- 2.4 GHz
- AMD Ryzen 9 7945HX3D
- 2.3 GHz
P-Core Boost Clock
- AMD Ryzen 9 7940HX
- 5.2 GHz
- AMD Ryzen 9 7945HX3D
- 5.4 GHz
L3 Cache
- AMD Ryzen 9 7940HX
- 64 MB-50%
- AMD Ryzen 9 7945HX3D
- 128 MBBest
Base Power
- AMD Ryzen 9 7940HX
- 55 W
- AMD Ryzen 9 7945HX3D
- 55 W
Memory Type
- AMD Ryzen 9 7940HX
- DDR5
- AMD Ryzen 9 7945HX3D
- DDR5
Integrated Graphics
- AMD Ryzen 9 7940HX
- Yes
- AMD Ryzen 9 7945HX3D
- Yes
Which one should you pick?
Choose 7940HX if you already have it on hand or find it at a lower price.
Choose 7945HX3D if you want the higher L3 cache (128 MB vs 64 MB).
Verdict
AMD Ryzen 9 7940HX
8.5 / 10 Expert Rating
The AMD Ryzen 9 7940HX delivers desktop-class multi-core performance in a laptop form factor, ideal for demanding gaming and creation workloads.
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.