Ryzen 9 3900X vs Ryzen 7 2800H

Primary details

Comparing Ryzen 7 2800H and Ryzen 9 3900X processor market type (desktop or notebook), architecture, sales start time and price.

Place in performance ranking	1174	251
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	no data	22.44
Market segment	Laptop	Desktop processor
Series	AMD Ryzen 7	AMD Ryzen 9
Architecture codename	Raven Ridge (Zen) (2018)	Matisse (Zen 2) (2019−2020)
Release date	10 September 2018 (5 years ago)	7 July 2019 (5 years ago)
Launch price (MSRP)	no data	$499

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

Ryzen 7 2800H and Ryzen 9 3900X 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	4 (Quad-Core)	12 (Dodeca-Core)
Threads	8	24
Base clock speed	3.4 GHz	3.8 GHz
Boost clock speed	3.3 GHz	4.6 GHz
Multiplier	33	no data
L1 cache	384 KB	768 KB
L2 cache	2 MB	6 MB
L3 cache	4 MB	64 MB
Chip lithography	14 nm	7 nm, 12 nm
Die size	209.78 mm2	no data
Maximum core temperature	95 °C	95 °C
Number of transistors	4950 Million	19,200 million
64 bit support	+	+
Windows 11 compatibility	-	+
Unlocked multiplier	-	+

Compatibility

Information on Ryzen 7 2800H and Ryzen 9 3900X 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)	1 (Uniprocessor)
Socket	FP5	AM4
Power consumption (TDP)	45 Watt	105 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Ryzen 7 2800H and Ryzen 9 3900X. You'll probably need this information if you require some particular technology.

Instruction set extensions	MMX (+), SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2, SSE4A, AES, AVX, AVX2, FMA3, SHA	no data
AES-NI	+	+
AVX	+	+
Precision Boost 2	+	+

Virtualization technologies

Virtual machine speed-up technologies supported by Ryzen 7 2800H and Ryzen 9 3900X are enumerated here.

AMD-V

+

+

Memory specs

Types, maximum amount and channel quantity of RAM supported by Ryzen 7 2800H and Ryzen 9 3900X. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR4	DDR4 Dual-channel
Maximum memory size	32 GB	128 GB
Max memory channels	2	2
Maximum memory bandwidth	51.196 GB/s	51.196 GB/s
ECC memory support	+	-

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card

AMD Radeon RX Vega 11

-

Peripherals

Specifications and connection of peripherals supported by Ryzen 7 2800H and Ryzen 9 3900X.

PCIe version	3.0	no data
PCI Express lanes	12	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.

Pros & cons summary

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Performance score	5.18	21.10
Recency	10 September 2018	7 July 2019
Physical cores	4	12
Threads	8	24
Chip lithography	14 nm	7 nm
Power consumption (TDP)	45 Watt	105 Watt

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Should you still have questions on choice between Ryzen 7 2800H and Ryzen 9 3900X, ask them in Comments section, and we shall answer.

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