Ryzen 9 3900X: specs and benchmarks
Aggregate performance score
Ryzen 9 3900X provides good benchmark performance at 20.54% of a leader's which is a 96-core EPYC 9655P.
Summary
AMD started Ryzen 9 3900X sales 7 July 2019 at a recommended price of $499. This is a Matisse (Zen 2) architecture desktop processor primarily aimed at office systems. It has 12 cores and 24 threads, and is based on 7 nm, 12 nm manufacturing technology, with a max turbo frequency of 4600 MHz and an unlocked multiplier.
Compatibility-wise, this is AMD Socket AM4 processor with a TDP of 125 Watt. It supports DDR4 Dual-channel memory.
Primary details
Ryzen 9 3900X processor market type (desktop or notebook), architecture, sales start time and pricing.
| Place in the ranking | 269 | |
| Place by popularity | not in top-100 | |
| Cost-effectiveness evaluation | 20.87 | |
| Market segment | Desktop processor | |
| Series | AMD Ryzen 9 | |
| Power efficiency | 15.55 | of 100.00 (Core Ultra 7 164U) |
| Architecture codename | Matisse (Zen 2) (2019−2020) | |
| Release date | 7 July 2019 (5 years ago) | |
| Launch price (MSRP) | $499 | of 17,906 (Xeon Platinum 8280L) |
Cost-effectiveness evaluation
Performance per price, higher is better.
Detailed specifications
Basic microprocessor parameters such as number of cores, number of threads, base frequency and turbo boost clock, lithography, cache size and multiplier lock state. These parameters can generally indicate CPU performance, but to be more precise you have to review its test results.
| Physical cores | 12 (Dodeca-Core) | |
| Threads | 24 | |
| Base clock speed | 3.8 GHz | of 4.7 GHz (Ryzen 9 7900X) |
| Boost clock speed | 4.6 GHz | of 6.2 GHz (Core i9-14900KS) |
| L1 cache | 96K (per core) | of 80 KB (EPYC 9965) |
| L2 cache | 512K (per core) | of 2 MB (Xeon 6980P) |
| L3 cache | 64 MB | of 1152 MB (EPYC 9684X) |
| Chip lithography | 7 nm, 12 nm | of 3 nm (Core Ultra 9 285K) |
| Maximum core temperature | 95 °C | of 110 °C (Core Ultra 9 185H) |
| Number of transistors | 19,200 million | of 135,240 million (EPYC 9684X) |
| 64 bit support | + | |
| Windows 11 compatibility | + | |
| Unlocked multiplier | + |
Compatibility
Information on Ryzen 9 3900X compatibility with other computer components and devices: 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) | of 8 (Xeon Platinum 8454H) |
| Socket | AM4 | |
| Power consumption (TDP) | 125 Watt | of 3100 ‑ 4500 (Ryzen 7 7435H) |
Technologies and extensions
Technological capabilities and additional instructions supported by Ryzen 9 3900X. You'll probably need this information if you require some particular technology.
| AES-NI | + | |
| AVX | + | |
| Precision Boost 2 | + |
Virtualization technologies
Supported virtual machine optimization technologies. Some are specific to Intel only, some to AMD.
| AMD-V | + |
Memory specs
Types, maximum amount and channel number of RAM supported by Ryzen 9 3900X's memory controller. Depending on the motherboard, higher memory frequency may be supported.
| Supported memory types | DDR4 Dual-channel | |
| Maximum memory size | 128 GB | of 6 TiB (EPYC 9654) |
| Max memory channels | 2 | of 12 (Xeon Platinum 9221) |
| Maximum memory bandwidth | 51.196 GB/s | of 460.8 GB/s (EPYC 9654) |
Graphics specifications
General parameters of a GPU integrated into Ryzen 9 3900X.
| Integrated graphics card | - |
Benchmark performance
Single-core and multi-core benchmark results of Ryzen 9 3900X. Overall benchmark performance 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.
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.
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.
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.
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.
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.
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.
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.
Cinebench 15 64-bit multi-core
Cinebench Release 15 Multi Core is a variant of Cinebench R15 which uses all the processor threads.
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.
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.
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.
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.
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.
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.
Geekbench 5.5 Multi-Core
Blender(-)
Geekbench 5.5 Single-Core
7-Zip Single
7-Zip
WebXPRT 3
Send your test results of Ryzen 9 3900X.
Intel equivalent
According to our data, the closest Intel alternative to Ryzen 9 3900X is Core i9-10980XE, which is nearly equal in speed and higher by 6 positions in our ranking.
Here are some closest Intel rivals to Ryzen 9 3900X:
Similar processors
Here is our recommendation of several processors that are more or less close in performance to the one reviewed.
Recommended GPUs
People consider these graphics cards to be good for Ryzen 9 3900X, according to our PC configuration statistics.
These are the fastest graphics cards for Ryzen 9 3900X in our user configuration statistics. There is a total of 3200 configurations using Ryzen 9 3900X in our database.
