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| Category | Details |
| Name | AMD Ryzen™ 9 3950X |
| Family | Ryzen |
| Series | Ryzen 3000 Series |
| Form Factor | Desktops, Boxed Processor |
| Market Segment | Enthusiast Desktop |
| AMD PRO Technologies | Yes |
| Regional Availability | Global, China, NA, EMEA, APJ, LATAM |
| Former Codename | Matisse |
| Architecture | Zen 2 |
| CPU Cores | 16 |
| Threads | 32 |
| Base Clock | 3.5 GHz |
| Max Boost Clock | Up to 4.7 GHz |
| L1 Cache | 1024 KB |
| L2 Cache | 8 MB |
| L3 Cache | 64 MB |
| Default TDP | 105W |
| Process Technology (Cores) | TSMC 7nm FinFET |
| Process Technology (I/O Die) | 12nm (GlobalFoundries) |
| CCD Size | 74mm² |
| IOD Size | 125mm² |
| Package Die Count | 3 |
| Total Transistor Count | 9.89 Billion |
| Unlocked for Overclocking | Yes |
| CPU Socket | AM4 |
| Supported Chipsets | X570, X470, X370, B450 |
| Boost Technology | Precision Boost 2 |
| Instruction Set | x86-64 |
| Supported Extensions | AES, AMD-V, AVX, AVX2, FMA3, MMX+, SHA, SSE–SSE4.2, SSE4A, SSSE3 |
| Thermal Solution (PIB) | Cooler Not Included, Liquid Cooling Recommended |
| Max Operating Temp (Tjmax) | 95°C |
| Launch Date | 07-07-2019 |
| OS Support | Windows 11/10 64-bit, RHEL x86 64-bit, Ubuntu x86 64-bit |
| Native USB 3.2 Gen 2 (10Gbps) | 4 |
| Native USB 3.2 Gen 1 | 0 |
| Native USB 2.0 | 0 |
| Native SATA Ports | 0 |
| PCIe Version | PCIe 4.0 |
| PCIe Lanes (Total / Usable) | 24 / 20 |
| Extra PCIe Lanes (X570) | 16× Gen 4 |
| NVMe Support | Boot, RAID 0/1/10 |
| Memory Type | DDR4 |
| Memory Channels | 2 |
| Max Memory | 128 GB |
| Memory Subtype | UDIMM |
| Max Memory Speed | 2×1R: 3200, 2×2R: 3200, 4×1R: 2933, 4×2R: 2667 |
| ECC Support | Yes (Motherboard Required) |
| Graphics Requirement | Discrete GPU Required |
| Security Features | PCIe DMA Security, USB DMA Security, AMD Enhanced Virus Protection ( NX Bit) |
