Ryzen 9 5900H vs Ryzen 9 3900X

Primary details

Comparing Ryzen 9 3900X and Ryzen 9 5900H processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	266	578
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	21.80	no data
Market segment	Desktop processor	Laptop
Series	AMD Ryzen 9	AMD Cezanne (Zen 3, Ryzen 5000)
Power efficiency	18.51	27.21
Architecture codename	Matisse (Zen 2) (2019−2020)	Cezanne U (Zen 3) (2021−2022)
Release date	7 July 2019 (5 years ago)	7 January 2021 (3 years ago)
Launch price (MSRP)	$499	no data

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

Ryzen 9 3900X and Ryzen 9 5900H 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	12 (Dodeca-Core)	8 (Octa-Core)
Threads	24	16
Base clock speed	3.8 GHz	3.3 GHz
Boost clock speed	4.6 GHz	4.6 GHz
L1 cache	768 KB	512 KB
L2 cache	6 MB	4 MB
L3 cache	64 MB	16 MB
Chip lithography	7 nm, 12 nm	7 nm
Maximum core temperature	95 °C	no data
Number of transistors	19,200 million	no data
64 bit support	+	+
Windows 11 compatibility	+	-
Unlocked multiplier	+	-

Compatibility

Information on Ryzen 9 3900X and Ryzen 9 5900H 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 (Uniprocessor)	no data
Socket	AM4	FP6
Power consumption (TDP)	105 Watt	45 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Ryzen 9 3900X and Ryzen 9 5900H. You'll probably need this information if you require some particular technology.

Instruction set extensions	no data	XFR, FMA3, SSE 4.2, AVX2, SMT
AES-NI	+	-
AVX	+	-
Precision Boost 2	+	no data

Virtualization technologies

Virtual machine speed-up technologies supported by Ryzen 9 3900X and Ryzen 9 5900H are enumerated here.

AMD-V

+

-

Memory specs

Types, maximum amount and channel quantity of RAM supported by Ryzen 9 3900X and Ryzen 9 5900H. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR4 Dual-channel	no data
Maximum memory size	128 GB	no data
Max memory channels	2	no data
Maximum memory bandwidth	51.196 GB/s	no data

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card

-

AMD Radeon RX Vega 8 (Ryzen 4000/5000)

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.

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Pros & cons summary

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Performance score	21.32	13.43
Recency	7 July 2019	7 January 2021
Physical cores	12	8
Threads	24	16
Power consumption (TDP)	105 Watt	45 Watt

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Should you still have questions on choice between Ryzen 9 3900X and Ryzen 9 5900H, ask them in Comments section, and we shall answer.

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