Ryzen 7 8840HX vs Ryzen 9 3950X

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Primary details

Comparing processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking243not rated
Place by popularitynot in top-100not in top-100
Cost-effectiveness evaluation17.82no data
Market segmentDesktop processorLaptop
SeriesAMD Ryzen 9no data
Power efficiency22.00no data
DesignerAMDAMD
ManufacturerTSMCTSMC
Architecture codenameMatisse (Zen 2) (2019−2020)Dragon Range (2025)
Release date14 November 2019 (5 years ago)23 April 2025 (recently)
Launch price (MSRP)$799no data

Cost-effectiveness evaluation

Performance per price, higher is better.

no data

Performance to price scatter graph

Detailed specifications

Ryzen 9 3950X and Ryzen 7 8840HX 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 cores16 (Hexadeca-Core)12 (Dodeca-Core)
Threads3224
Base clock speed3.5 GHz2.9 GHz
Boost clock speed4.7 GHz5.1 GHz
L1 cache96K (per core)64 KB (per core)
L2 cache512K (per core)1 MB (per core)
L3 cache64 MB64 MB (shared)
Chip lithography7 nm, 12 nm5 nm
Die size2 x 72 mm + 125 mm (IO-Die) mm22x 71 mm2
Number of transistors19,200 million13,140 million
64 bit support++
Windows 11 compatibility+no data
Unlocked multiplier++

Compatibility

Information on Ryzen 9 3950X and Ryzen 7 8840HX 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 configuration1 (Uniprocessor)1
SocketAM4FL1
Power consumption (TDP)105 Watt55 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Ryzen 9 3950X and Ryzen 7 8840HX. You'll probably need this information if you require some particular technology.

Instruction set extensions86x MMX(+), SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2, SSE4A,-64, AMD-V, AES, AVX, AVX2, FMA3, SHA, Precision Boost 2no data
AES-NI++
AVX++
Precision Boost 2++

Virtualization technologies

Virtual machine speed-up technologies supported by Ryzen 9 3950X and Ryzen 7 8840HX are enumerated here.

AMD-V++

Memory specs

Types, maximum amount and channel quantity of RAM supported by Ryzen 9 3950X and Ryzen 7 8840HX. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory typesDDR4 Dual-channelDDR5
Maximum memory size128 GBno data
Maximum memory bandwidth51.196 GB/sno data
ECC memory support+-

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card-AMD Radeon 610M

Peripherals

Specifications and connection of peripherals supported by Ryzen 9 3950X and Ryzen 7 8840HX.

PCIe versionno data5.0
PCI Express lanesno data28

Pros & cons summary


Recency 14 November 2019 23 April 2025
Physical cores 16 12
Threads 32 24
Chip lithography 7 nm 5 nm
Power consumption (TDP) 105 Watt 55 Watt

Ryzen 9 3950X has 33.3% more physical cores and 33.3% more threads.

Ryzen 7 8840HX, on the other hand, has an age advantage of 5 years, a 40% more advanced lithography process, and 90.9% lower power consumption.

We couldn't decide between AMD Ryzen 9 3950X and AMD Ryzen 7 8840HX. We've got no test results to judge.

Note that Ryzen 9 3950X is a desktop processor while Ryzen 7 8840HX is a notebook one.

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AMD Ryzen 9 3950X
Ryzen 9 3950X
AMD Ryzen 7 8840HX
Ryzen 7 8840HX

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