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AMD Ryzen 5 7640U vs AMD Ryzen 5 8640U: Comparison
Ryzen 5 7640U vs Ryzen 5 8640U: the p-core base clock difference
The first real difference is p-core base clock: Ryzen 5 7640U 3.5 GHz against Ryzen 5 8640U 1.7 GHz. There is a split on socket as well, FP7, FP7r2, FP8 on the Ryzen 5 7640U versus BGA on the Ryzen 5 8640U. Igpu is not the same on both, AMD Radeon 760M on the Ryzen 5 7640U versus AMD Radeon 740M/760M/780M Graphics on the Ryzen 5 8640U.
Which should you buy, Ryzen 5 7640U or Ryzen 5 8640U?
The Ryzen 5 7640U is the one to take for midrange thin-and-light laptops and office work, browsing and video calls, though it is not the pick for modern games at high settings without a dedicated GPU and copilot+ PC AI features, which need a 40+ TOPS NPU. It is not the one for heavy video rendering or 3D work, where 8-core chips finish much sooner. The Ryzen 5 8640U suits midrange thin-and-light laptops and office work, browsing and video calls, though it is the wrong buy for modern games at high settings without a dedicated GPU and copilot+ PC AI features, which need a 40+ TOPS NPU. It is the wrong buy for heavy video rendering or 3D work, where 8-core chips finish much sooner. Our rating of the Ryzen 5 8640U (7.8/10): the AMD Ryzen 5 8640U is a well-balanced ultraportable chip that prioritizes battery life and everyday responsiveness.
Where the two are identical
The common ground is wider than the gap: total cores, performance cores, efficiency cores, total threads and p-core boost clock are identical here. They match on 8 further specifications as well.
Frequently asked questions
Is the TDP the same on the Ryzen 5 7640U and Ryzen 5 8640U?
It is. Both are listed at 28 W, so it is not a reason to pick one over the other.
Specs and benchmarks
Form Factor
- AMD Ryzen 5 7640U
- Laptop
- AMD Ryzen 5 8640U
- Laptop
Codename
- AMD Ryzen 5 7640U
- Phoenix
- AMD Ryzen 5 8640U
- Hawk Point
Release Year
- AMD Ryzen 5 7640U
- 2023
- AMD Ryzen 5 8640U
- 2023
TDP
- AMD Ryzen 5 7640U
- 28 W
- AMD Ryzen 5 8640U
- 28 W
iGPU
- AMD Ryzen 5 7640U
- AMD Radeon 760M
- AMD Ryzen 5 8640U
- AMD Radeon 740M/760M/780M Graphics (RDNA 3)
Market Segment
- AMD Ryzen 5 7640U
- Laptop
- AMD Ryzen 5 8640U
- Laptop
Microarchitecture
- AMD Ryzen 5 7640U
- Zen 4
- AMD Ryzen 5 8640U
- Zen 4 (Phoenix/Hawk Point)
Socket
- AMD Ryzen 5 7640U
- FP7, FP7r2, FP8
- AMD Ryzen 5 8640U
- BGA (soldered, mobile)
Process Node
- AMD Ryzen 5 7640U
- TSMC 4nm FinFET
- AMD Ryzen 5 8640U
- 4 nm
Total Cores
- AMD Ryzen 5 7640U
- 6
- AMD Ryzen 5 8640U
- 6
Performance Cores
- AMD Ryzen 5 7640U
- 6
- AMD Ryzen 5 8640U
- 6
Efficiency Cores
- AMD Ryzen 5 7640U
- 0
- AMD Ryzen 5 8640U
- 0
Total Threads
- AMD Ryzen 5 7640U
- 12
- AMD Ryzen 5 8640U
- 12
SMT Enabled
- AMD Ryzen 5 7640U
- Yes
- AMD Ryzen 5 8640U
- Yes
P-Core Base Clock
- AMD Ryzen 5 7640U
- 3.5 GHz
- AMD Ryzen 5 8640U
- 1.7 GHz
P-Core Boost Clock
- AMD Ryzen 5 7640U
- 4.9 GHz
- AMD Ryzen 5 8640U
- 4.9 GHz
L3 Cache
- AMD Ryzen 5 7640U
- 16 MB
- AMD Ryzen 5 8640U
- 16 MB
Base Power
- AMD Ryzen 5 7640U
- 28 W
- AMD Ryzen 5 8640U
- 28 W
Memory Type
- AMD Ryzen 5 7640U
- DDR5, LPDDR5X
- AMD Ryzen 5 8640U
- DDR5, LPDDR5x
Integrated Graphics
- AMD Ryzen 5 7640U
- Yes
- AMD Ryzen 5 8640U
- Yes
Which one should you pick?
Choose 7640U if you want the higher L3 cache (16 MB vs 16 MB).
Choose 8640U if you already have it on hand or find it at a lower price.
Verdict
AMD Ryzen 5 8640U
7.8 / 10 Expert Rating
The AMD Ryzen 5 8640U is a well-balanced ultraportable chip that prioritizes battery life and everyday responsiveness.