AMD Ryzen 5 8640HS

Desktop CPUAMD

Also called amd ryzen 5 8640hs, ryzen 5 8640hs, ryzen-5-8640hs

AMDDesktop CPUZen 4

AMD Ryzen 5 desktop processor on Zen 4, with 6 cores and 12 threads and 6144 KB L2, 16 MB L3 at 28 W TDP on a 4 nm process addressing up to 256 GB and Yes.

What you need to know

AMD Ryzen 5 8640HS is a current generation desktop cpu.

AMD Ryzen 5 8640HS launched in December, 6, 2023., It has 6 cores and 12 threads on Zen 4, dropping into the FP7/FP7r2/FP8 socket. Treat the spec table as the facts. Age alone does not tell you to throw it out.

Still good?: Only if the workload is light
Product age: Less than a year old
Upgrade pressure: Low

Feex says

If apps already feel slow, check RAM and storage before you blame this CPU by name alone.

What this hardware means today

Age and usefulness are not the same number. This page keeps them separate.

Performance today: Average. Average for the class when RAM, storage, and the GPU keep up.
Product age 0 years old: Current generation. Launched December, 6, 2023. Newer platforms exist. That does not make this chip unusable by itself.
Support status: Supported. Current Windows and current applications still run on this class of CPU. Platform BIOS support depends on the motherboard or laptop vendor.
Upgrade pressure: Low. Upgrade pressure is low unless you need a different platform feature.

Where does it sit?

Zen 4 sits on AMD's recent Zen desktop and laptop timeline. Later chips keep the brand and change the core.

Zen 2

Zen 3

Zen 4

Zen 5

Performance context

These are qualitative readings, not a fake 8.7 out of 10. Workload still wins.

Gaming: Good

Playable in lighter titles. A weak GPU will hide whatever this chip still has.

Productivity: Average

6 cores cover office, browser, and compile work in this class.

Multithreaded workloads: Good

12 threads. Heavy encodes still scale further on higher-core parts.

General use: Good

Everyday Windows use is not where most people notice this SKU first.

Efficiency: Good

Rated 28 W base power. That is a platform number, not a promise about your cooler.

Should you upgrade?

Probably not if this chip already matches your work.

Upgrade makes more sense if

Your workload is strongly CPU limited
You need a newer platform for memory, I/O, or chipset features
You need substantially more multicore performance
You need newer connectivity that your current board cannot offer

Upgrade makes less sense if

The GPU is the real bottleneck
Current applications are already responsive
The CPU rarely limits your workload

Specifications

Figures below follow the Feex Hardware Database record for this SKU. Fields without a recorded value are omitted.

Processor

AMD Ryzen 5 8640HS is built on Zen 4 using a 4 nm process at TSMC.

AMD Ryzen 5 8640HS specifications: Processor
Manufacturer	AMD
Family	Ryzen 5
Architecture	Zen 4
Codename	Zen 4 (Hawk Point)
Generation	Ryzen 8000 Series
Manufacturing process	4 nm
Foundry	TSMC
Segment	Desktop

Cores and threads

AMD Ryzen 5 8640HS has 6 cores and 12 threads.

AMD Ryzen 5 8640HS specifications: Cores and threads
Cores	6
P-cores	6
Threads	12

Clock speeds

Base clock is 3.5 GHz. Boost reaches 4.9 GHz.

AMD Ryzen 5 8640HS specifications: Clock speeds
Base frequency	3.5 GHz
Max boost	4.9 GHz

Cache

Cache on this sheet is 16 MB L3.

AMD Ryzen 5 8640HS specifications: Cache
L2 cache	6144 KB
L3 cache	16 MB
Total cache	22 MB

Memory

AMD Ryzen 5 8640HS addresses 256 GB across 2 memory channels.

AMD Ryzen 5 8640HS specifications: Memory
Supported types	DDR5
Max capacity	256 GB
Channels	2

Package and power

AMD Ryzen 5 8640HS uses the FP7/FP7r2/FP8 socket and a 28 W TDP.

AMD Ryzen 5 8640HS specifications: Package and power
Socket	FP7/FP7r2/FP8
TDP	28 W
PCIe	Revision 4.0, 20 lanes

Integrated graphics

AMD Ryzen 5 8640HS includes Yes.

AMD Ryzen 5 8640HS specifications: Integrated graphics
Integrated graphics	Yes

Market

AMD Ryzen 5 8640HS launched December, 6, 2023.

AMD Ryzen 5 8640HS specifications: Market
Launch date	December, 6, 2023

Independent scores

These are PassMark CPU figures. They are not Feex measurements.

AMD Ryzen 5 8640HS specifications: Independent scores
Single-core score	3,524
Multi-core score	19,895
Overall score	8,373
Productivity score	17,865
Creator score	17,285
Engineering score	19,771
Gaming score	15,546
Performance per watt	710.5

Compatibility

Compatibility
Socket	FP7/FP7r2/FP8
Board	A shared socket is not automatic compatibility. Check the motherboard CPU list and BIOS revision.
Memory	DDR5, up to 256 GB
Graphics	Yes

A shared socket is not automatic compatibility. Boards often need a BIOS update before a newer chip in the same socket will post.

Cooler clearance, VRM quality, and power limits matter as much as the socket name.

Read the memory list on the board. The CPU can list more standards than one motherboard will accept.

No post after a CPU swap

Clear CMOS only after you confirm the board list includes this SKU and the BIOS is new enough. A supported name on a box is not the same as a flashed board.

Sources and verification

Reviewed by Feex editorial. Last verified August 2026 Status: Partially Verified. How we research.

Feex Hardware Database · Specification source used for this sheet. CC BY 4.0.
PassMark Software · CPU benchmark page for AMD Ryzen 5 8640HS

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