AMD Ryzen 7 5800X vs Ryzen 9 3900X

#ad
Buy
VS

Combined performance score

Ryzen 9 3900X
21.27
+17%

Ryzen 9 3900X outperforms Ryzen 7 5800X by 17% in our combined benchmark results.

General info

Comparing Ryzen 9 3900X and Ryzen 7 5800X processor market type (desktop or notebook), architecture, sales start time and price.

Place in performance ranking219291
Place by popularitynot in top-10074
Value for money38.6340.15
Market segmentDesktop processorDesktop processor
SeriesAMD Ryzen 9AMD Ryzen 7
Architecture codenameMatisse (Zen 2) (2019−2020)Vermeer (Zen 3)
Release date7 July 2019 (4 years old)5 November 2020 (3 years old)
Launch price (MSRP)$499$449
Current price$388 (0.8x MSRP)$370 (0.8x MSRP)
Value for money

Performance per price, higher is better.

Ryzen 7 5800X has 4% better value for money than Ryzen 9 3900X.

Technical specs

Ryzen 9 3900X and Ryzen 7 5800X 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 cores12 (Dodeca-Core)8 (Octa-Core)
Threads2416
Base clock speed3.8 GHz3.8 GHz
Boost clock speed4.6 GHz4.7 GHz
L1 cache96K (per core)64K (per core)
L2 cache512K (per core)512K (per core)
L3 cache64 MB32 MB
Chip lithography7 nm7 nm
Die sizeno data2 x 80.7 sq. mm; I/O = 125 mm2
Maximum core temperature95 °C90 °C
Maximum case temperature (TCase)no data95 °C
Number of transistors19,200 millionno data
64 bit support++
Windows 11 compatibility++
Unlocked multiplierYesYes

Compatibility

Information on Ryzen 9 3900X and Ryzen 7 5800X 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
SocketAM4AM4
Power consumption (TDP)125 Watt105 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Ryzen 9 3900X and Ryzen 7 5800X. You'll probably need this information if you require some particular technology.

Instruction set extensionsno data86x MMX(+), SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2, SSE4A,-64, AMD-V, AES, AVX, AVX2, FMA3, SHA, Precision Boost 2
AES-NI++
AVX++

Virtualization technologies

Virtual machine speed-up technologies supported by Ryzen 9 3900X and Ryzen 7 5800X are enumerated here.

AMD-V++

Memory specs

Types, maximum amount and channel quantity of RAM supported by Ryzen 9 3900X and Ryzen 7 5800X. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory typesDDR4 Dual-channelDDR4-3200
Maximum memory size128 GB128 GB
Max memory channels22
Maximum memory bandwidth51.196 GB/s51.196 GB/s
ECC memory support--

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card--

Peripherals

Specifications and connection of peripherals supported by Ryzen 9 3900X and Ryzen 7 5800X.

PCIe versionno data4.0

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 3900X 21.27
+17%
Ryzen 7 5800X 18.18

Ryzen 9 3900X outperforms Ryzen 7 5800X by 17% in our combined benchmark results.


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.

Benchmark coverage: 68%

Ryzen 9 3900X 32665
+17%
Ryzen 7 5800X 27923

Ryzen 9 3900X outperforms Ryzen 7 5800X by 17% in Passmark.

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.

Benchmark coverage: 42%

Ryzen 9 3900X 1693
Ryzen 7 5800X 2179
+28.7%

Ryzen 7 5800X outperforms Ryzen 9 3900X by 29% in GeekBench 5 Single-Core.

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.

Benchmark coverage: 42%

Ryzen 9 3900X 9934
Ryzen 7 5800X 10263
+3.3%

Ryzen 7 5800X outperforms Ryzen 9 3900X by 3% in GeekBench 5 Multi-Core.

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.

Benchmark coverage: 20%

Ryzen 9 3900X 6019
Ryzen 7 5800X 6835
+13.6%

Ryzen 7 5800X outperforms Ryzen 9 3900X by 14% in Cinebench 10 32-bit single-core.

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.

Benchmark coverage: 19%

Ryzen 9 3900X 45539
Ryzen 7 5800X 45548
+0%

3DMark06 CPU

3DMark06 is a discontinued DirectX 9 benchmark suite from Futuremark. Its CPU part contains two scenarios, one dedicated to artificial intelligence pathfinding, another to game physics using PhysX package.

Benchmark coverage: 19%

Ryzen 9 3900X 14889
Ryzen 7 5800X 15873
+6.6%

Ryzen 7 5800X outperforms Ryzen 9 3900X by 7% in 3DMark06 CPU.

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.

Benchmark coverage: 18%

Ryzen 9 3900X 2.69
+13%
Ryzen 7 5800X 3.04

Ryzen 7 5800X outperforms Ryzen 9 3900X by 13% in wPrime 32.

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.

Benchmark coverage: 17%

Ryzen 9 3900X 34
+15.6%
Ryzen 7 5800X 29

Ryzen 9 3900X outperforms Ryzen 7 5800X by 16% in Cinebench 11.5 64-bit multi-core.

Cinebench 15 64-bit multi-core

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

Benchmark coverage: 15%

Ryzen 9 3900X 3049
+16.9%
Ryzen 7 5800X 2609

Ryzen 9 3900X outperforms Ryzen 7 5800X by 17% in Cinebench 15 64-bit multi-core.

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.

Benchmark coverage: 15%

Ryzen 9 3900X 207
Ryzen 7 5800X 266
+28.3%

Ryzen 7 5800X outperforms Ryzen 9 3900X by 28% in Cinebench 15 64-bit single-core.

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.

Benchmark coverage: 14%

Ryzen 9 3900X 2.36
Ryzen 7 5800X 3.09
+30.9%

Ryzen 7 5800X outperforms Ryzen 9 3900X by 31% in Cinebench 11.5 64-bit single-core.

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.

Benchmark coverage: 13%

Ryzen 9 3900X 10.8
Ryzen 7 5800X 15
+39.5%

Ryzen 7 5800X outperforms Ryzen 9 3900X by 40% in TrueCrypt AES.

WinRAR 4.0

WinRAR 4.0 is an outdated version of a popular file archiver. It contains an internal speed test, using 'Best' setting of RAR compression on large chunks of randomly generated data. Its results are measured in kilobytes per second.

Benchmark coverage: 13%

Ryzen 9 3900X 7534
Ryzen 7 5800X 15604
+107%

Ryzen 7 5800X outperforms Ryzen 9 3900X by 107% in WinRAR 4.0.

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.  

Benchmark coverage: 13%

Ryzen 9 3900X 268
Ryzen 7 5800X 339
+26.7%

Ryzen 7 5800X outperforms Ryzen 9 3900X by 27% in x264 encoding pass 1.

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.  

Benchmark coverage: 13%

Ryzen 9 3900X 147
Ryzen 7 5800X 152
+3.4%

Ryzen 7 5800X outperforms Ryzen 9 3900X by 3% in x264 encoding pass 2.

Gaming performance

Advantages and disadvantages


Performance score 21.27 18.18
Recency 7 July 2019 5 November 2020
Physical cores 12 8
Threads 24 16
Cost $499 $449
Power consumption (TDP) 125 Watt 105 Watt

The Ryzen 9 3900X is our recommended choice as it beats the Ryzen 7 5800X in performance tests.


Should you still have questions on choice between Ryzen 9 3900X and Ryzen 7 5800X, ask them in Comments section, and we shall answer.

User ratings

Do you think we are right or mistaken in our choice? Vote by clicking "Like" button near your favorite CPU.


AMD Ryzen 9 3900X
Ryzen 9 3900X
AMD Ryzen 7 5800X
Ryzen 7 5800X

Similar processor comparisons

We picked several similar comparisons of processors in the same market segment and performance relatively close to those reviewed on this page.

User ratings: view and submit

Here you can see how users rate the processors, as well as rate them yourself.


4.7 4958 votes

Rate AMD Ryzen 9 3900X on a scale of 1 to 5:

  • 1
  • 2
  • 3
  • 4
  • 5
4.2 4945 votes

Rate AMD Ryzen 7 5800X on a scale of 1 to 5:

  • 1
  • 2
  • 3
  • 4
  • 5

Questions and comments

Here you can ask a question about Ryzen 9 3900X or Ryzen 7 5800X, agree or disagree with our judgements, or report an error or mismatch.