AMD Ryzen 9 3950X vs AMD Ryzen 7 3800X: comparison
Comparison of AMD Ryzen 9 3950X and AMD Ryzen 7 3800X: key differences and a full specification table.
Key differences
AMD Ryzen 9 3950X has more cores (16 vs 8), more threads (32 vs 16), a higher maximum clock (4.7 GHz vs 4.5 GHz) and a larger L3 cache (64 MB vs 32 MB).
At the same time, AMD Ryzen 7 3800X has a higher base clock (3.9 GHz vs 3.5 GHz).
Both processors match on: TDP (105 W), process node (7 nm), memory channels (2), PCIe version (4).
These are specification values: they show differences between the models but do not determine a performance winner. For a specific workload, rely on independent benchmarks.
Key specifications
| Parameter | AMD Ryzen 9 3950X | AMD Ryzen 7 3800X |
|---|---|---|
| Cores / threads | 16 / 32 | 8 / 16 |
| Max boost clock | 4.7 GHz | 4.5 GHz |
| L3 cache | 64 MB | 32 MB |
| TDP | 105 W | 105 W |
| Process | 7 nm | 7 nm |
| Integrated graphics | Discrete Graphics Card Required | Discrete Graphics Card Required |
Full specification table
Differing values are highlighted. This is not a better/worse rating: numbers from different architectures are not always comparable.
| Parameter | AMD Ryzen 9 3950X | AMD Ryzen 7 3800X |
|---|---|---|
| General | ||
| Codename | Matisse | Matisse |
| Segment | Boxed Processor | Boxed Processor |
| Product line | AMD Ryzen 9 Desktop Processors | AMD Ryzen 7 Desktop Processors |
| Product family | AMD Ryzen Processors | AMD Ryzen Processors |
| Architecture | "Zen 2" | — |
| Process | 7 nm | 7 nm |
| Launch date | 07/07/2019 | 07/07/2019 |
| Dies per package | 3 | — |
| Unlocked for overclocking | Yes | Yes |
| Operating system support | Windows 11 - 64-Bit Edition, Windows 10 - 64-Bit Edition, RHEL x86 64-Bit, Ubuntu x86 64-Bit | Windows 11 - 64-Bit Edition, Windows 10 - 64-Bit Edition, RHEL x86 64-Bit, Ubuntu x86 64-Bit |
| Regional availability | Global, China, NA, EMEA, APJ, LATAM | — |
| Target market | Enthusiast Desktop | — |
| Consumer oriented | Yes | — |
| Recommended cooling | — | Wraith PRISM |
| CPU | ||
| Cores | 16 | 8 |
| Threads | 32 | 16 |
| Multithreading (SMT/HT) | Yes | — |
| Base clock | 3.5 GHz | 3.9 GHz |
| Max boost clock | 4.7 GHz | 4.5 GHz |
| L1 cache | 1 MB | 512 KB |
| L2 cache | 8 MB | 4 MB |
| L3 cache | 64 MB | 32 MB |
| TDP | 105 W | 105 W |
| Instruction set | x86-64 | — |
| Instruction set extensions | AES, AMD-V, AVX, AVX2, FMA3, MMX(+), SHA, SSE, SSE2, SSE3, SSE4.1, SSE4.2, SSE4A, SSSE3, x86-64 | — |
| Boost technology | Precision Boost 2 | — |
| Memory | ||
| Max memory size | 128 GB | — |
| Memory types | DDR4 | DDR4 |
| Memory channels | 2 | 2 |
| Max memory speed | — | 3.2 GHz |
| ECC memory supported | Yes | — |
| Memory speed (text) | 2x1R | DDR4-3200 | | | 2x2R | DDR4-3200 | | | 4x1R | DDR4-2933 | | | 4x2R | DDR4-2667 | — |
| Memory form factor | UDIMM | — |
| Graphics | ||
| Integrated graphics | Discrete Graphics Card Required | Discrete Graphics Card Required |
| Has integrated graphics | No | No |
| I/O and interfaces | ||
| PCI Express revision | 4 | 4 |
| PCI Express lanes | 24 | — |
| SATA ports | 0 | — |
| USB 2.0 ports | 0 | — |
| USB 3.2 Gen 2 ports | 4 | — |
| NVMe support | Boot, RAID0, RAID1, RAID10 | — |
| Compatible chipsets | X570, X470, X370, B450 | — |
| USB Type-C support | Yes | — |
| USB 3.2 Gen 1 ports | 0 | — |
| Package and thermal | ||
| Sockets supported | AM4 | AM4 |
| TJUNCTION | 95 °C | 95 °C |
| Die size | 74 mm² | — |
| Transistors (millions) | 9.89 billion | — |
| I/O die process | 12 nm | — |
| I/O die size | 125 mm² | — |
| Security and virtualization | ||
| Execute Disable Bit | Yes | — |
| AMD PRO technologies | Yes | — |
| Identifiers | ||
| Product ID (OEM) | 100-000000051 | 100-000000025 |
| Product ID (Box) | 100-100000051WOF | 100-100000025BOX |
| Product ID (MPK) | — | 100-100000025MPK |
| Bundled cooler | Cooler Not Included, Liquid Cooling Recommended | Wraith Prism with RGB LED |