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AMD Ryzen 9 7940H vs AMD Ryzen 9 9955HX: Comparison
Ryzen 9 7940H vs Ryzen 9 9955HX: the l3 cache difference
L3 cache is where these two genuinely part company, Ryzen 9 7940H 16 MB against Ryzen 9 9955HX 64 MB, a 75% lead for Ryzen 9 9955HX. P-core base clock is not the same on both, 4.0 GHz on the Ryzen 9 7940H versus 2.5 GHz on the Ryzen 9 9955HX. Tdp is not the same on both, 45 W on the Ryzen 9 7940H versus 55 W on the Ryzen 9 9955HX. There is a split on socket as well, BGA on the Ryzen 9 7940H versus FL1 on the Ryzen 9 9955HX. Release year is not the same on both, 2023 on the Ryzen 9 7940H versus 2025 on the Ryzen 9 9955HX.
Ryzen 9 7940H vs Ryzen 9 9955HX: which one fits your build
Buy the Ryzen 9 7940H for mainstream laptops and multitasking and productivity, though it is not the pick for high-end gaming and extreme battery-life-first designs. The Ryzen 9 9955HX suits gaming laptops and mobile content creation, though it is not built for thin-and-light ultraportables and all-day battery life needs. Our rating of the Ryzen 9 7940H (8.1/10): the AMD Ryzen 9 7940H strikes a strong balance between performance and portability for mainstream laptops. 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.
What Ryzen 9 7940H and Ryzen 9 9955HX have in common
Everything else lines up. Efficiency cores, integrated graphics, form factor, market segment and smt enabled read the same on both, so those are not worth weighing.
Frequently asked questions
Do the Ryzen 9 7940H and Ryzen 9 9955HX differ on total cores?
Yes. Total Cores reads 8 on the Ryzen 9 7940H versus 16 on the Ryzen 9 9955HX.
Specs and benchmarks
Form Factor
- AMD Ryzen 9 7940H
- Laptop
- AMD Ryzen 9 9955HX
- Laptop
Codename
- AMD Ryzen 9 7940H
- Phoenix
- AMD Ryzen 9 9955HX
- Fire Range
Release Year
- AMD Ryzen 9 7940H
- 2023
- AMD Ryzen 9 9955HX
- 2025
TDP
- AMD Ryzen 9 7940H
- 45 W
- AMD Ryzen 9 9955HX
- 55 W
iGPU
- AMD Ryzen 9 7940H
- AMD Radeon 780M
- AMD Ryzen 9 9955HX
- AMD Radeon 610M
Market Segment
- AMD Ryzen 9 7940H
- Laptop
- AMD Ryzen 9 9955HX
- Laptop
Microarchitecture
- AMD Ryzen 9 7940H
- Zen 4 (Phoenix)
- AMD Ryzen 9 9955HX
- Zen 5 (Fire Range)
Socket
- AMD Ryzen 9 7940H
- BGA (soldered, mobile)
- AMD Ryzen 9 9955HX
- FL1
Process Node
- AMD Ryzen 9 7940H
- 4 nm
- AMD Ryzen 9 9955HX
- TSMC 4nm FinFET
Total Cores
- AMD Ryzen 9 7940H
- 8
- AMD Ryzen 9 9955HX
- 16Best
Performance Cores
- AMD Ryzen 9 7940H
- 8
- AMD Ryzen 9 9955HX
- 16Best
Efficiency Cores
- AMD Ryzen 9 7940H
- 0
- AMD Ryzen 9 9955HX
- 0
Total Threads
- AMD Ryzen 9 7940H
- 16
- AMD Ryzen 9 9955HX
- 32Best
SMT Enabled
- AMD Ryzen 9 7940H
- Yes
- AMD Ryzen 9 9955HX
- Yes
P-Core Base Clock
- AMD Ryzen 9 7940H
- 4.0 GHz
- AMD Ryzen 9 9955HX
- 2.5 GHz
P-Core Boost Clock
- AMD Ryzen 9 7940H
- 5.2 GHz
- AMD Ryzen 9 9955HX
- 5.4 GHz
L3 Cache
- AMD Ryzen 9 7940H
- 16 MB-75%
- AMD Ryzen 9 9955HX
- 64 MBBest
Memory Type
- AMD Ryzen 9 7940H
- DDR5
- AMD Ryzen 9 9955HX
- DDR5, 2-Channel
Integrated Graphics
- AMD Ryzen 9 7940H
- Yes
- AMD Ryzen 9 9955HX
- Yes
Which one should you pick?
Choose 7940H if you already have it on hand or find it at a lower price.
Choose 9955HX if you want the higher L3 cache (64 MB vs 16 MB).
Verdict
AMD Ryzen 9 7940H
8.1 / 10 Expert Rating
The AMD Ryzen 9 7940H strikes a strong balance between performance and portability for mainstream laptops.
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.