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AMD Ryzen 5 8640U
A six-core, 12-thread Zen 4 Hawk Point chip for thin laptops, running 3.5 to 4.9GHz in a 15 to 30W configurable range with Radeon 760M graphics and a Ryzen AI NPU rated up to 16 TOPS. It sits below the eight-core Ryzen 7 8840U in AMD's 8040 U-series line.
Pros
- Six Zen 4 cores and 12 threads on TSMC 4nm
- Boosts up to 4.9GHz from a 3.5GHz base clock
- Radeon 760M graphics with 8 compute units
- NPU rated up to 16 TOPS for on-device AI features
- Configurable 15 to 30W TDP lets laptop makers tune for battery life or performance
Cons
- 16 TOPS NPU falls below the 40 TOPS Microsoft requires for Copilot+ PCs
- Six cores trail the eight-core Ryzen 7 8840U in heavy multi-threaded work
- Zen 4 cores are a generation behind AMD's Zen 5 laptop chips
- Sustained speed depends on each laptop's power limit and cooling
Average
Computed from specs & benchmarks via our public methodology.
Full specifications
Everything we track for the AMD Ryzen 5 8640U
General
- Announced
- 2023
- Process
- 4 nm
- Base TDP
- 28 W
- Max TDP
- 30 W
Cores & Clocks
- Cores
- 6
- Performance cores
- 6
- Threads
- 12
- Base clock
- 3.5 GHz
- Boost clock
- 4.9 GHz
- L3 cache
- 16 MB
Integrated GPU
- iGPU
- AMD Radeon 760M
- iGPU clock
- 2,600 MHz
Memory
- Memory support
- LPDDR5X-7500 / DDR5-5600
- Max memory
- 96 GB
Benchmarks
- Geekbench 6 (single)
- 2,464Bottom 36%
- Geekbench 6 (multi)
- 9,903Bottom 34%
- Cinebench R23 (single)
- 1,651Bottom 33%
- Cinebench R23 (multi)
- 10,433Bottom 33%
- PassMark
- 19,859Bottom 43%
- PassMark (single thread)
- 3,459Bottom 33%
- 3DMark Time Spy Graphics (iGPU)
- 2,281Top 38%
Quick answers
Is the AMD Ryzen 5 8640U good in 2026?
The AMD Ryzen 5 8640U earns an Inno Score of 54.3/100 (“Average”) based on its specs and benchmark results. A six-core, 12-thread Zen 4 Hawk Point chip for thin laptops, running 3.5 to 4.9GHz in a 15 to 30W configurable range with Radeon 760M graphics and a Ryzen AI NPU rated up to 16 TOPS. It sits below the eight-core Ryzen 7 8840U in AMD's 8040 U-series line.
Does the AMD Ryzen 5 8640U count as "Core i7 or equivalent"?
Its PassMark CPU Mark average is 19,859 (cpubenchmark.net, retrieved Sep 26–Oct 8, 2026), which puts it in Tier B of our CPU tier checker: recent mainstream Core i7 / Ryzen 7, plus older H-series chips. Requirement pages word this differently, so check the exact wording with your department.
What are the key specs of the AMD Ryzen 5 8640U?
Cores: 6 · Threads: 12 · Boost clock: 4.9 GHz · Base TDP: 28 W
What are the closest alternatives to the AMD Ryzen 5 8640U?
Its closest rivals on InnoReviews are Intel Core 7 350, Intel Core i7-13650HX, AMD Ryzen 5 7540U — open the comparison pages for a spec-by-spec breakdown.
