Family illustration.
Family illustration.
What's the best choice AMD Ryzen 5 8640U or AMD Ryzen 7 8840U? Which processor is faster?
Compare the available specifications of these models.
AMD Ryzen 5 8640U has a base frequency of 3.5 GHz. 6 / 12 CPU Cores / Threads. Stated TDP / base power 28 W.
AMD Ryzen 7 8840U has a base frequency of 3.3 GHz. 8 / 16 CPU Cores / Threads. Stated TDP / base power 28 W.
Reasons to consider Higher clock speed
Around 6% better clock speed
3.3 GHz
Common positions AMD Ryzen 5 8640U CPU in popular benchmarks, for comparison with other models.
No data
Reasons to consider More number of cores
2 more cores
6
Higher turbo clock speed
Around 4 % higher specified turbo frequency
4.9 GHz
Common positions AMD Ryzen 7 8840U CPU in popular benchmarks, for comparison with other models.
No data
AMD Ryzen 5 8640U
Background information about the processors being compared, series, generation and market segment.
Ryzen
Laptops / Desktops
Mobile
Ryzen 8000 Series
Core counts, threads, cache and clock modes describe the CPU configuration. Performance depends on the workload and comparable measured results.
3.3 GHz
8
16
5.1 GHz
No
Internal Graphics does not affect the performance of the CPU, performs the work of the graphics card in its absence or on mobile devices.
2700 MHz
AMD Radeon 780M
12
Types, channel quantity of RAM supported by AMD Ryzen 7 8840U and AMD Ryzen 5 8640U. Depending on the motherboards, higher or lower memory frequencies may be supported.
2
DDR5 (FP7r2) / LPDDR5X (FP7-FP8)
PCIe 4.0
Compare the TDP requirements of TDP AMD Ryzen 5 8640U and AMD Ryzen 7 8840U Power specifications describe different manufacturer limits. TDP, base power and maximum turbo power are separate values; they do not establish measured system consumption.
15-30 W
28 W
100 °C
Architecture, interfaces, additional instructions supported by AMD Ryzen 5 8640U and AMD Ryzen 7 8840U, virtual machine technologies and process technology.
Hawk Point
8 MB
16 MB
https://www.amd.com/en/products/processors/laptop/ryzen/8000-series/amd-ryzen-7-8840u.html
FP7 / FP7r2 / FP8
TSMC 4nm FinFET
2026-09-30
No comparable benchmark results are available yet. Specifications alone do not determine which model is faster.
These are saved results from the earlier catalog. Measurement dates and test configurations were not recorded. Models with no comparable results are omitted.
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