Ryzen 5 8400F vs Ryzen 5 8540U

Primary details

Comparing Ryzen 5 8540U and Ryzen 5 8400F processor market type (desktop or notebook), architecture, sales start time and price.

Place in performance ranking	575	401
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	no data	74.14
Market segment	Laptop	Desktop processor
Architecture codename	Hawk Point-U (Zen 4 + Zen 4c)	Phoenix
Release date	6 December 2023 (less than a year ago)	1 April 2024 (less than a year ago)
Current price	no data	$169

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

Ryzen 5 8540U and Ryzen 5 8400F basic parameters such as number of cores, number of threads, base frequency and turbo boost clock, lithography, cache size and multiplier lock state. These parameters indirectly say of CPU speed, though for more precise assessment you have to consider their test results.

Physical cores	6 (Hexa-Core)	6 (Hexa-Core)
Threads	122 x 4.9  GHz AMD Zen 44 x 4.9  GHz AMD Zen 4c	12
Base clock speed	3.2 GHz	4.2 GHz
Boost clock speed	4.9 GHz	4.7 GHz
L1 cache	64 KB (per core)	64 KB (per core)
L2 cache	1 MB (per core)	1 MB (per core)
L3 cache	16 MB (shared)	16 MB (shared)
Chip lithography	4 nm	4 nm
Die size	137 mm2	178 mm2
Maximum core temperature	100 °C	no data
Number of transistors	20,900 million	25,000 million
64 bit support	+	+
Unlocked multiplier	No	Yes

Compatibility

Information on Ryzen 5 8540U and Ryzen 5 8400F compatibility with other computer components: motherboard (look for socket type), power supply unit (look for power consumption) etc. Useful when planning a future computer configuration or upgrading an existing one. Note that power consumption of some processors can well exceed their nominal TDP, even without overclocking. Some can even double their declared thermals given that the motherboard allows to tune the CPU power parameters.

Number of CPUs in a configuration	1	1
Socket	FP7	AM5
Power consumption (TDP)	28 Watt	65 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Ryzen 5 8540U and Ryzen 5 8400F. You'll probably need this information if you require some particular technology.

Instruction set extensions	DDR5-5600/LPDDR5x-7500 RAM, PCIe 4, AES, AVX, AVX2, AVX512, FMA3, MMX (+), SHA, SSE, SSE2, SSE3, SSE4.1, SSE4.2, SSE4A, SSSE3	no data
AES-NI	+	+
AVX	+	+

Virtualization technologies

Virtual machine speed-up technologies supported by Ryzen 5 8540U and Ryzen 5 8400F are enumerated here.

AMD-V

+

+

Memory specs

Types, maximum amount and channel quantity of RAM supported by Ryzen 5 8540U and Ryzen 5 8400F. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types

DDR5

DDR5

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card

AMD Radeon 740M

N/A

Peripherals

Specifications and connection of peripherals supported by Ryzen 5 8540U and Ryzen 5 8400F.

PCIe version	4.0	4.0
PCI Express lanes	14	20

Synthetic benchmark performance

Various benchmark results of the processors in comparison. Overall score is measured in points in 0-100 range, higher is better.

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Combined synthetic benchmark score

This is our combined benchmark performance rating. We are regularly improving our combining algorithms, but if you find some perceived inconsistencies, feel free to speak up in comments section, we usually fix problems quickly.

Ryzen 5 8400F outperforms Ryzen 5 8540U by 27% based on our aggregate benchmark results.

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Pros & cons summary

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Performance score	12.49	15.89
Recency	6 December 2023	1 April 2024
Threads	122 x 4.9 GHz AMD Zen 44 x 4.9 GHz AMD Zen 4c	12
Power consumption (TDP)	28 Watt	65 Watt

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Should you still have questions on choice between Ryzen 5 8540U and Ryzen 5 8400F, ask them in Comments section, and we shall answer.

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