AMD® Ryzen™ 9 3900

The AMD Ryzen 9 3900 is a desktop processor with 12 cores and 24 threads, built on the Zen 2 architecture (7 nm process). It launched in Oct 2019. Clocks run from 3.1 GHz base to 4.3 GHz boost. A 64-MB L3 cache backs the cores (5.9 MB per core). It supports DDR4 memory. The chip drops into the AM4 socket and exposes PCIe 4.0 (24 lanes). Rated TDP is 65 W. Notable platform capabilities: AMD-V (Hardware Virtualization).

The AMD Ryzen 9 3900 scores 2,604 in single-core performance and 30,547 in multi-core performance (PassMark CPU Mark ratings). From those two ratings Feex computes 8,919 for overall performance, 23,501 for productivity performance, 21,488 for creator performance, 33,220 for engineering performance and 15,449 for gaming performance. Its multi-core throughput works out to 2,546 per core, 1,273 per thread and 470 per watt. Its computed efficiency index is 1,106. Its performance index is 111, so its overall performance is 11% above the Intel Core i5-12400 (index 100). Each bar shows the score as a share of a reference ceiling, which is the larger of the 99th-percentile score across the Feex CPU database and a fixed baseline.

Scores for individual PassMark CPU Mark test categories. Higher is better. These are measured test scores, not computed from the single-core and multi-core ratings.

In the individual workload tests the AMD Ryzen 9 3900 scores 97,469 in integer math, 56,659 in floating-point math, 413,776 in compression, 26,626 in cryptography, 1,614 in physics simulation, 26,031 in vector SIMD, 203 in the prime sieve and 44,756 in sorting. Higher is better. Compared with the Intel Core i5-12400, it is 66% above in integer math, 23% above in floating-point math, 81% above in compression, 132% above in cryptography, 48% above in physics simulation, 68% above in vector SIMD, 203% above in the prime sieve and 98% above in sorting. Each bar shows the score as a share of that workload's reference ceiling, the larger of the 99th-percentile score across CPUs with a recorded value and a fixed baseline.

The AMD Ryzen 9 3900 has 12 physical cores and runs 24 logical threads. It does not use a hybrid performance and efficiency core layout. It runs 2 threads per core. It runs at a base clock of 3.10 GHz and boosts up to 4.30 GHz.

The AMD Ryzen 9 3900 is a desktop processor, belongs to the AMD Ryzen 9 family, uses the Zen 2 architecture, carries the codename Matisse and is manufactured on a 7 nm process. It launched in Oct 2019.

The AMD Ryzen 9 3900 has 768 KB of L1 cache, 6 MB of L2 cache and 64 MB of L3 cache. That adds up to about 70.8 MB of cache, or 5.90 MB per core. Each core has 512 KB of private L2 cache.

The AMD Ryzen 9 3900 has a 3-level cache hierarchy: L1 at 768 KB, L2 at 6 MB and L3 at 64 MB. L3 is the largest level and makes up about 90% of the cache listed here.

The AMD Ryzen 9 3900 supports DDR4 memory, uses 2 memory channels, runs memory at up to 3,200 MT/s and delivers up to 51.2 GB/s of memory bandwidth. It does not support DDR5 and LPDDR memory.

The AMD Ryzen 9 3900 does not include integrated graphics, so a discrete graphics card is required for display output.

The AMD Ryzen 9 3900 uses the AM4 socket, supports PCI Express 4.0 and provides up to 24 PCIe lanes.

The AMD Ryzen 9 3900 has a rated TDP of 65 W.

Instruction sets, security, virtualization, AI acceleration and OS readiness. Features are listed as supported, explicitly not supported, or not recorded; a feature that is not recorded is not the same as unsupported.

The AMD Ryzen 9 3900 is manufactured by TSMC.

Feex has recorded 59% of the specifications it tracks for the AMD Ryzen 9 3900. Values Feex does not hold are shown as "Not recorded" rather than estimated.

Not recorded: Core Configuration: Efficiency Cores, All-Core Boost and Unlocked Multiplier. Architecture & Generation: ISA Family and Market Status. Cache: L4 Cache. Memory Support: ECC Memory. Platform & Compatibility: Package and Package Size. Power & Thermals: Base Power, Maximum Turbo Power, Configurable TDP (Min), Configurable TDP (Max), Max Junction Temperature and Tcase. Physical & Manufacturing: Transistor Count, Die Size, Die Count and Launch Price. Naming & Aliases: SKU, Model Number, Processor Number and Part Number.

Processors that use the same AM4 socket as the AMD Ryzen 9 3900 and have the closest multi-core scores in the Feex database include AMD Ryzen 9 3900XT, AMD Ryzen 9 3900X, AMD Ryzen 7 5800X3D, AMD Ryzen 7 5800XT and AMD Ryzen 7 5800X.