AMD Ryzen Threadripper 3990X vs AMD Ryzen Threadripper 3960X: comparison
Comparison of AMD Ryzen Threadripper 3990X and AMD Ryzen Threadripper 3960X: key differences and a full specification table.
Key differences
AMD Ryzen Threadripper 3990X has more cores (64 vs 24), more threads (128 vs 48) and a larger L3 cache (256 MB vs 128 MB).
At the same time, AMD Ryzen Threadripper 3960X has a higher base clock (3.8 GHz vs 2.9 GHz) and a higher maximum clock (4.5 GHz vs 4.3 GHz).
Both processors match on: TDP (280 W), process node (7 nm), memory channels (4), 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 Threadripper 3990X | AMD Ryzen Threadripper 3960X |
|---|---|---|
| Cores / threads | 64 / 128 | 24 / 48 |
| Max boost clock | 4.3 GHz | 4.5 GHz |
| L3 cache | 256 MB | 128 MB |
| TDP | 280 W | 280 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 Threadripper 3990X | AMD Ryzen Threadripper 3960X |
|---|---|---|
| General | ||
| Codename | Castle Peak | Castle Peak |
| Segment | Boxed Processor | Boxed Processor |
| Product line | AMD Ryzen Threadripper Processors | AMD Ryzen Threadripper Processors |
| Product family | AMD Ryzen Processors | AMD Ryzen Processors |
| Architecture | "Zen 2" | — |
| Process | 7 nm | 7 nm |
| Launch date | 02/07/2020 | 11/25/2019 |
| Dies per package | 5 | — |
| Unlocked for overclocking | Yes | Yes |
| Operating system support | Windows 11 - 64-Bit Edition, Windows 10 - 64-Bit Edition, RHEL x86 64-Bit | Windows 10 - 64-Bit Edition, RHEL x86 64-Bit, Ubuntu x86 64-Bit |
| Regional availability | Global, China, NA, EMEA, APJ, LATAM | — |
| Target market | HEDT | — |
| Consumer oriented | Yes | — |
| CPU | ||
| Cores | 64 | 24 |
| Threads | 128 | 48 |
| Multithreading (SMT/HT) | Yes | — |
| Base clock | 2.9 GHz | 3.8 GHz |
| Max boost clock | 4.3 GHz | 4.5 GHz |
| L1 cache | 4 MB | 1.5 MB |
| L2 cache | 32 MB | 12 MB |
| L3 cache | 256 MB | 128 MB |
| TDP | 280 W | 280 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 | 256 GB | — |
| Memory types | DDR4 | DDR4 |
| Memory channels | 4 | 4 |
| Max memory speed | — | 3.2 GHz |
| ECC memory supported | Yes | — |
| Memory speed (text) | 4x1R | DDR4-3200 | | | 4x2R | DDR4-3200 | | | 8x1R | DDR4-2933 | | | 8x2R | DDR4-2677 | — |
| 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 | 64 | — |
| SATA ports | 0 | — |
| USB 2.0 ports | 0 | — |
| USB 3.2 Gen 2 ports | 4 | — |
| NVMe support | Boot, RAID0, RAID1, RAID10 | — |
| Compatible chipsets | TRX40 | — |
| USB Type-C support | Yes | — |
| USB 3.2 Gen 1 ports | 0 | — |
| Package and thermal | ||
| Sockets supported | sTRX4 | sTRX4 |
| TJUNCTION | 95 °C | 95 °C |
| Die size | 74 mm² | — |
| Transistors (millions) | 39.54 billion | — |
| I/O die process | 12 nm | — |
| I/O die size | 416 mm² | — |
| Security and virtualization | ||
| Execute Disable Bit | Yes | — |
| Supported technologies | AMD "Zen" Core Architecture, AMD Ryzen Master Utility | AMD "Zen" Core Architecture, AMD Ryzen Master Utility |
| AMD PRO technologies | No | — |
| Identifiers | ||
| Product ID (OEM) | 100-000000163 | 100-000000010 |
| Product ID (Box) | 100-100000163WOF | 100-100000010WOF |
| Bundled cooler | Cooler Not Included, Liquid Cooling Recommended | Not included |