Family illustration.
Family illustration.
What's the best choice AMD Ryzen 5 PRO 8540U or AMD Ryzen 5 PRO 8645HS? Which processor is faster?
Compare the available specifications of these models.
AMD Ryzen 5 PRO 8540U has a base frequency of 3.2 GHz. 6 / 12 CPU Cores / Threads. Stated TDP / base power 28 W.
AMD Ryzen 5 PRO 8645HS has a base frequency of 4.3 GHz. 6 / 12 CPU Cores / Threads. Stated TDP / base power 45 W.
Reasons to consider Lower stated TDP / base power
Power limits alone do not measure performance per watt.
45 W
Common positions AMD Ryzen 5 PRO 8540U CPU in popular benchmarks, for comparison with other models.
No data
Reasons to consider Higher clock speed
Around 34% better clock speed
3.2 GHz
Higher turbo clock speed
Around 2 % higher specified turbo frequency
4.9 GHz
Common positions AMD Ryzen 5 PRO 8645HS CPU in popular benchmarks, for comparison with other models.
No data
AMD Ryzen 5 PRO 8540U
Background information about the processors being compared, series, generation and market segment.
Ryzen PRO
Desktops / 1L Desktops / Laptops / Mobile Workstations
Mobile
Ryzen PRO 8000 Series
Core counts, threads, cache and clock modes describe the CPU configuration. Performance depends on the workload and comparable measured results.
4.3 GHz
6
12
5 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.
2600 MHz
AMD Radeon 760M
8
Types, channel quantity of RAM supported by AMD Ryzen 5 PRO 8645HS and AMD Ryzen 5 PRO 8540U. Depending on the motherboards, higher or lower memory frequencies may be supported.
2
DDR5 (FP7r2) / LPDDR5X (FP7)
PCIe 4.0
Compare the TDP requirements of TDP AMD Ryzen 5 PRO 8540U and AMD Ryzen 5 PRO 8645HS Power specifications describe different manufacturer limits. TDP, base power and maximum turbo power are separate values; they do not establish measured system consumption.
35-54 W
45 W
100 °C
Architecture, interfaces, additional instructions supported by AMD Ryzen 5 PRO 8540U and AMD Ryzen 5 PRO 8645HS, virtual machine technologies and process technology.
Hawk Point
6 MB
16 MB
https://www.amd.com/en/products/processors/laptop/ryzen-pro/8000-series/amd-ryzen-5-pro-8645hs.html
FP7 / FP7r2
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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