Ryzen 7 7700X vs Ryzen 9 3900

VS

Aggregate performance score

Ryzen 9 3900
2019
12 cores / 24 threads, 65 Watt
19.34
Ryzen 7 7700X
2022
8 cores / 16 threads, 105 Watt
22.64
+17.1%

Ryzen 7 7700X outperforms Ryzen 9 3900 by a moderate 17% based on our aggregate benchmark results.

Primary details

Comparing Ryzen 9 3900 and Ryzen 7 7700X processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking300233
Place by popularitynot in top-100not in top-100
Cost-effectiveness evaluation20.7446.04
Market segmentDesktop processorDesktop processor
SeriesAMD Matisse (Ryzen 3000 Desktop)AMD Ryzen 7
Power efficiency28.1620.41
Architecture codenameMatisse (Zen 2) (2019−2020)Raphael (Zen4) (2022−2023)
Release date24 September 2019 (5 years ago)27 September 2022 (2 years ago)
Launch price (MSRP)$499$399

Cost-effectiveness evaluation

Performance per price, higher is better.

Ryzen 7 7700X has 122% better value for money than Ryzen 9 3900.

Detailed specifications

Ryzen 9 3900 and Ryzen 7 7700X 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 speed3.1 GHz4.5 GHz
Boost clock speed4.3 GHz5.4 GHz
L1 cache64 KB (per core)64K (per core)
L2 cache512 KB (per core)1 MB (per core)
L3 cache64 MB32 MB (shared)
Chip lithography7 nm, 12 nm5 nm, 6 nm
Die size2x 74 mm270 mm2
Maximum core temperatureno data95 °C
Maximum case temperature (TCase)no data61 °C
Number of transistors7,600 million6,570 million
64 bit support++
Windows 11 compatibility-+
Unlocked multiplier++

Compatibility

Information on Ryzen 9 3900 and Ryzen 7 7700X 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 configuration11
SocketAM4AM5
Power consumption (TDP)65 Watt105 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Ryzen 9 3900 and Ryzen 7 7700X. 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 25 nm, 0.650 - 1.475V
AES-NI++
AVX++
Precision Boost 2++

Virtualization technologies

Virtual machine speed-up technologies supported by Ryzen 9 3900 and Ryzen 7 7700X are enumerated here.

AMD-V++

Memory specs

Types, maximum amount and channel quantity of RAM supported by Ryzen 9 3900 and Ryzen 7 7700X. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory typesDDR4-3200DDR5-5200
Maximum memory size128 GB128 GB
Max memory channels2no data
Maximum memory bandwidth51.196 GB/sno data

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics cardN/AAMD Radeon Graphics (Ryzen 7000) (400 - 2200 MHz)

Peripherals

Specifications and connection of peripherals supported by Ryzen 9 3900 and Ryzen 7 7700X.

PCIe version4.05.0
PCI Express lanes2424

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 3900 19.34
Ryzen 7 7700X 22.64
+17.1%

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 3900 30722
Ryzen 7 7700X 35955
+17%

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 3900 1678
Ryzen 7 7700X 2964
+76.6%

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 3900 9543
Ryzen 7 7700X 15490
+62.3%

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 3900 5700
Ryzen 7 7700X 8633
+51.5%

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 3900 44191
Ryzen 7 7700X 56024
+26.8%

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.

Ryzen 9 3900 13817
Ryzen 7 7700X 18115
+31.1%

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 3900 31
Ryzen 7 7700X 36
+16.5%

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 3900 2804
Ryzen 7 7700X 3114
+11%

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 3900 197
Ryzen 7 7700X 315
+59.9%

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 3900 2.22
Ryzen 7 7700X 3.71
+67.1%

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 3900 10.4
Ryzen 7 7700X 17.5
+68.3%

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.

Ryzen 9 3900 7145
Ryzen 7 7700X 14879
+108%

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 3900 132
Ryzen 7 7700X 181
+37.4%

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 3900 256
Ryzen 7 7700X 374
+46.2%

Geekbench 5.5 Multi-Core

Ryzen 9 3900 10190
Ryzen 7 7700X 14131
+38.7%

Blender(-)

Ryzen 9 3900 179
+9.8%
Ryzen 7 7700X 163

Geekbench 5.5 Single-Core

Ryzen 9 3900 1246
Ryzen 7 7700X 2218
+78%

7-Zip Single

Ryzen 9 3900 5134
Ryzen 7 7700X 8074
+57.3%

7-Zip

Ryzen 9 3900 75612
Ryzen 7 7700X 85707
+13.4%

WebXPRT 3

Ryzen 9 3900 227
Ryzen 7 7700X 355
+56.4%

Gaming performance

Pros & cons summary


Performance score 19.34 22.64
Recency 24 September 2019 27 September 2022
Physical cores 12 8
Threads 24 16
Chip lithography 7 nm 5 nm
Power consumption (TDP) 65 Watt 105 Watt

Ryzen 9 3900 has 50% more physical cores and 50% more threads, and 61.5% lower power consumption.

Ryzen 7 7700X, on the other hand, has a 17.1% higher aggregate performance score, an age advantage of 3 years, and a 40% more advanced lithography process.

The Ryzen 7 7700X is our recommended choice as it beats the Ryzen 9 3900 in performance tests.


Should you still have questions on choice between Ryzen 9 3900 and Ryzen 7 7700X, ask them in Comments section, and we shall answer.

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AMD Ryzen 9 3900
Ryzen 9 3900
AMD Ryzen 7 7700X
Ryzen 7 7700X

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Community ratings

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Questions & comments

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