Ryzen 7 8840U vs Ryzen 9 3950X

VS

Aggregate performance score

Ryzen 9 3950X
2019
16 cores / 32 threads, 105 Watt
24.37
+62%
Ryzen 7 8840U
2023
8 cores / 16 threads, 28 Watt
15.04

Ryzen 9 3950X outperforms Ryzen 7 8840U by an impressive 62% based on our aggregate benchmark results.

Primary details

Comparing Ryzen 9 3950X and Ryzen 7 8840U processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking210472
Place by popularitynot in top-100not in top-100
Cost-effectiveness evaluation18.76no data
Market segmentDesktop processorLaptop
SeriesAMD Ryzen 9no data
Power efficiency21.9650.83
Architecture codenameMatisse (Zen 2) (2019−2020)Hawk Point-U (Zen 4) (2023)
Release date14 November 2019 (5 years ago)6 December 2023 (1 year ago)
Launch price (MSRP)$799no data

Cost-effectiveness evaluation

Performance per price, higher is better.

no data

Detailed specifications

Ryzen 9 3950X and Ryzen 7 8840U 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)8 (Octa-Core)
Threads3216
Base clock speed3.5 GHz3.3 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 MB16 MB (shared)
Chip lithography7 nm, 12 nm4 nm
Die size2 x 72 mm + 125 mm (IO-Die) mm2178 mm2
Maximum core temperatureno data100 °C
Number of transistors19,200 million25,000 million
64 bit support++
Windows 11 compatibility+no data
Unlocked multiplier+-

Compatibility

Information on Ryzen 9 3950X and Ryzen 7 8840U 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
SocketAM4FP8
Power consumption (TDP)105 Watt28 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Ryzen 9 3950X and Ryzen 7 8840U. 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 2Ryzen AI, AES, AVX, AVX2, AVX512, FMA3, MMX (+), SHA, SSE, SSE2, SSE3, SSE4.1, SSE4.2, SSE4A, SSSE3
AES-NI++
AVX++
Precision Boost 2++

Virtualization technologies

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

AMD-V++

Memory specs

Types, maximum amount and channel quantity of RAM supported by Ryzen 9 3950X and Ryzen 7 8840U. 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 780M ( - 2700 MHz)

Peripherals

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

PCIe versionno data4.0
PCI Express lanesno data20

Synthetic benchmark performance

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


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 9 3950X 24.37
+62%
Ryzen 7 8840U 15.04

Passmark

Passmark CPU Mark is a widespread benchmark, consisting of 8 different types of workload, including integer and floating point math, extended instructions, compression, encryption and physics calculation. There is also one separate single-threaded scenario measuring single-core performance.

Ryzen 9 3950X 38715
+62.1%
Ryzen 7 8840U 23884

GeekBench 5 Single-Core

GeekBench 5 Single-Core is a cross-platform application developed in the form of CPU tests that independently recreate certain real-world tasks with which to accurately measure performance. This version uses only a single CPU core.

Ryzen 9 3950X 1730
Ryzen 7 8840U 2212
+27.9%

GeekBench 5 Multi-Core

GeekBench 5 Multi-Core is a cross-platform application developed in the form of CPU tests that independently recreate certain real-world tasks with which to accurately measure performance. This version uses all available CPU cores.

Ryzen 9 3950X 10784
+14.7%
Ryzen 7 8840U 9398

Cinebench 10 32-bit single-core

Cinebench R10 is an ancient ray tracing benchmark for processors by Maxon, authors of Cinema 4D. Its single core version uses just one CPU thread to render a futuristic looking motorcycle.

Ryzen 9 3950X 6102
Ryzen 7 8840U 7381
+21%

Cinebench 10 32-bit multi-core

Cinebench Release 10 Multi Core is a variant of Cinebench R10 using all the processor threads. Possible number of threads is limited by 16 in this version.

Ryzen 9 3950X 53396
+29.3%
Ryzen 7 8840U 41306

wPrime 32

wPrime 32M is a math multi-thread processor test, which calculates square roots of first 32 million integer numbers. Its result is measured in seconds, so that the less is benchmark result, the faster the processor.

Ryzen 9 3950X 4.11
Ryzen 7 8840U 3.28
+25.3%

Cinebench 11.5 64-bit multi-core

Cinebench Release 11.5 Multi Core is a variant of Cinebench R11.5 which uses all the processor threads. A maximum of 64 threads is supported in this version.

Ryzen 9 3950X 44
+81.5%
Ryzen 7 8840U 24

Cinebench 15 64-bit multi-core

Cinebench Release 15 Multi Core is a variant of Cinebench R15 which uses all the processor threads.

Ryzen 9 3950X 4002
+125%
Ryzen 7 8840U 1782

Cinebench 15 64-bit single-core

Cinebench R15 (standing for Release 15) is a benchmark made by Maxon, authors of Cinema 4D. It was superseded by later versions of Cinebench, which use more modern variants of Cinema 4D engine. The Single Core version (sometimes called Single-Thread) only uses a single processor thread to render a room full of reflective spheres and light sources.

Ryzen 9 3950X 209
Ryzen 7 8840U 266
+27%

Cinebench 11.5 64-bit single-core

Cinebench R11.5 is an old benchmark by Maxon, authors of Cinema 4D. It was superseded by later versions of Cinebench, which use more modern variants of Cinema 4D engine. The Single Core version loads a single thread with ray tracing to render a glossy room full of crystal spheres and light sources.

Ryzen 9 3950X 2.37
Ryzen 7 8840U 3.22
+35.9%

TrueCrypt AES

TrueCrypt is a discontinued piece of software that was widely used for on-the-fly-encryption of disk partitions, now superseded by VeraCrypt. It contains several embedded performance tests, one of them being TrueCrypt AES, which measures data encryption speed using AES algorithm. Result is encryption speed in gigabytes per second.

Ryzen 9 3950X 10.8
Ryzen 7 8840U 11.5
+6.5%

x264 encoding pass 2

x264 Pass 2 is a slower variant of x264 video compression that produces a variable bit rate output file, which results in better quality since the higher bit rate is used when it is needed more. Benchmark result is still measured in frames per second.  

Ryzen 9 3950X 168
+41.6%
Ryzen 7 8840U 119

x264 encoding pass 1

x264 version 4.0 is a video encoding benchmark uses MPEG 4 x264 compression method to compress a sample HD (720p) video. Pass 1 is a faster variant that produces a constant bit rate output file. Its result is measured in frames per second, which means how many frames of the source video file were encoded per second.  

Ryzen 9 3950X 265
Ryzen 7 8840U 267
+0.8%

Geekbench 5.5 Multi-Core

Ryzen 9 3950X 12363
+28.3%
Ryzen 7 8840U 9636

Blender(-)

Ryzen 9 3950X 126
Ryzen 7 8840U 283
+125%

Geekbench 5.5 Single-Core

Ryzen 9 3950X 1306
Ryzen 7 8840U 1879
+43.9%

7-Zip Single

Ryzen 9 3950X 5340
Ryzen 7 8840U 5993
+12.2%

7-Zip

Ryzen 9 3950X 99467
+84.2%
Ryzen 7 8840U 54009

WebXPRT 3

Ryzen 9 3950X 239
Ryzen 7 8840U 302
+26.4%

Gaming performance

Pros & cons summary


Performance score 24.37 15.04
Recency 14 November 2019 6 December 2023
Physical cores 16 8
Threads 32 16
Chip lithography 7 nm 4 nm
Power consumption (TDP) 105 Watt 28 Watt

Ryzen 9 3950X has a 62% higher aggregate performance score, and 100% more physical cores and 100% more threads.

Ryzen 7 8840U, on the other hand, has an age advantage of 4 years, a 75% more advanced lithography process, and 275% lower power consumption.

The Ryzen 9 3950X is our recommended choice as it beats the Ryzen 7 8840U in performance tests.

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


Should you still have questions on choice between Ryzen 9 3950X and Ryzen 7 8840U, ask them in Comments section, and we shall answer.

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AMD Ryzen 9 3950X
Ryzen 9 3950X
AMD Ryzen 7 8840U
Ryzen 7 8840U

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Community ratings

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