AMD Ryzen Threadripper PRO 3975WX vs AMD Ryzen Threadripper PRO 3945WX: comparison
Comparison of AMD Ryzen Threadripper PRO 3975WX and AMD Ryzen Threadripper PRO 3945WX: key differences and a full specification table.
Key differences
AMD Ryzen Threadripper PRO 3975WX has more cores (32 vs 12), more threads (64 vs 24) and a larger L3 cache (128 MB vs 64 MB).
At the same time, AMD Ryzen Threadripper PRO 3945WX has a higher base clock (4 GHz vs 3.5 GHz) and a higher maximum clock (4.3 GHz vs 4.2 GHz).
Both processors match on: TDP (280 W), process node (7 nm), memory channels (8), 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 PRO 3975WX | AMD Ryzen Threadripper PRO 3945WX |
|---|---|---|
| Cores / threads | 32 / 64 | 12 / 24 |
| Max boost clock | 4.2 GHz | 4.3 GHz |
| L3 cache | 128 MB | 64 MB |
| TDP | 280 W | 280 W |
| Process | 7 nm | 7 nm |
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 PRO 3975WX | AMD Ryzen Threadripper PRO 3945WX |
|---|---|---|
| General | ||
| Codename | Castle Peak | Castle Peak |
| Segment | Desktop | Desktop |
| Product line | AMD Ryzen Threadripper PRO Processors | AMD Ryzen Threadripper PRO Processors |
| Product family | AMD Ryzen PRO Processors | AMD Ryzen PRO Processors |
| Process | 7 nm | 7 nm |
| Launch date | 07/14/2020 | 07/14/2020 |
| Unlocked for overclocking | No | No |
| Operating system support | Windows 10 - 64-Bit Edition | Windows 10 - 64-Bit Edition |
| CPU | ||
| Cores | 32 | 12 |
| Threads | 64 | 24 |
| Base clock | 3.5 GHz | 4 GHz |
| Max boost clock | 4.2 GHz | 4.3 GHz |
| L1 cache | 2 MB | 768 KB |
| L2 cache | 16 MB | 6 MB |
| L3 cache | 128 MB | 64 MB |
| TDP | 280 W | 280 W |
| Memory | ||
| Memory types | DDR4 | DDR4 |
| Memory channels | 8 | 8 |
| Max memory speed | 3.2 GHz | 3.2 GHz |
| Graphics | ||
| Has integrated graphics | No | No |
| I/O and interfaces | ||
| PCI Express revision | 4 | 4 |
| Package and thermal | ||
| Sockets supported | sWRX8 | — |
| Max CPU configuration | 1 | 1 |
| TJUNCTION | 90 °C | 90 °C |
| Security and virtualization | ||
| Supported technologies | AMD "Zen" Core Architecture | AMD "Zen" Core Architecture |
| Identifiers | ||
| Product ID (OEM) | 100-000000086 | 100-000000168 |
| Product ID (Box) | 100-100000086WOF | — |