Ryzen 7 3800X vs Ryzen 7 7840H

Primary details

Comparing Ryzen 7 7840H and Ryzen 7 3800X processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	349	496
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	no data	16.44
Market segment	Laptop	Desktop processor
Series	no data	AMD Ryzen 7
Power efficiency	48.13	13.12
Architecture codename	Phoenix (2023−2024)	Matisse (2019−2020)
Release date	January 2023 (1 year ago)	27 May 2019 (5 years ago)
Launch price (MSRP)	no data	$399

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

Ryzen 7 7840H and Ryzen 7 3800X 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	8 (Octa-Core)	8 (Octa-Core)
Threads	16	16
Base clock speed	3.8 GHz	3.9 GHz
Boost clock speed	5.1 GHz	4.5 GHz
L1 cache	64K (per core)	512 KB
L2 cache	1 MB (per core)	4 MB
L3 cache	16 MB (shared)	32 MB
Chip lithography	4 nm	7 nm, 12 nm
Die size	178 mm2	no data
Number of transistors	25,000 million	19,200 million
64 bit support	+	+
Windows 11 compatibility	+	+
Unlocked multiplier	-	+

Compatibility

Information on Ryzen 7 7840H and Ryzen 7 3800X 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 (Uniprocessor)
Socket	FP8	AM4
Power consumption (TDP)	35 Watt	105 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Ryzen 7 7840H and Ryzen 7 3800X. You'll probably need this information if you require some particular technology.

AES-NI	+	+
AVX	+	+
Precision Boost 2	+	+

Virtualization technologies

Virtual machine speed-up technologies supported by Ryzen 7 7840H and Ryzen 7 3800X are enumerated here.

AMD-V

+

+

Memory specs

Types, maximum amount and channel quantity of RAM supported by Ryzen 7 7840H and Ryzen 7 3800X. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR5-5600	DDR4 Dual-channel
Maximum memory size	no data	128 GB
Max memory channels	no data	2
Maximum memory bandwidth	no data	51.196 GB/s

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card

AMD Radeon 780M

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Peripherals

Specifications and connection of peripherals supported by Ryzen 7 7840H and Ryzen 7 3800X.

PCIe version	4.0	no data
PCI Express lanes	20	no data

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	17.80	14.56
Chip lithography	4 nm	7 nm
Power consumption (TDP)	35 Watt	105 Watt

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Should you still have questions on choice between Ryzen 7 7840H and Ryzen 7 3800X, ask them in Comments section, and we shall answer.

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