AMD Ryzen 7 5800X vs AMD Ryzen 9 3900XT: comparison
Comparison of AMD Ryzen 7 5800X and AMD Ryzen 9 3900XT: key differences and a full specification table.
Key differences
AMD Ryzen 9 3900XT has more cores (12 vs 8), more threads (24 vs 16) and a larger L3 cache (64 MB vs 32 MB).
Both processors match on: base clock (3.8 GHz), maximum clock (4.7 GHz), TDP (105 W), process node (7 nm), 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 7 5800X | AMD Ryzen 9 3900XT |
|---|---|---|
| Cores / threads | 8 / 16 | 12 / 24 |
| Max boost clock | 4.7 GHz | 4.7 GHz |
| L3 cache | 32 MB | 64 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 7 5800X | AMD Ryzen 9 3900XT |
|---|---|---|
| General | ||
| Codename | Vermeer | Matisse |
| Segment | Boxed Processor | Boxed Processor |
| Product line | AMD Ryzen 7 Desktop Processors | AMD Ryzen 9 Desktop Processors |
| Product family | AMD Ryzen Processors | AMD Ryzen Processors |
| Process | 7 nm | 7 nm |
| Launch date | 11/05/2020 | 07/2020 |
| 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 10 - 64-Bit Edition, RHEL x86 64-Bit, Ubuntu x86 64-Bit |
| Recommended cooling | Premium air cooler recommended for optimal performance | — |
| CPU | ||
| Cores | 8 | 12 |
| Threads | 16 | 24 |
| Base clock | 3.8 GHz | 3.8 GHz |
| Max boost clock | 4.7 GHz | 4.7 GHz |
| L2 cache | 4 MB | 6 MB |
| L3 cache | 32 MB | 64 MB |
| TDP | 105 W | 105 W |
| Memory | ||
| Memory types | DDR4 | DDR4 |
| Max memory speed | 3.2 GHz | 3.2 GHz |
| 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 |
| Package and thermal | ||
| Sockets supported | AM4 | — |
| TJUNCTION | 90 °C | 95 °C |
| Security and virtualization | ||
| Supported technologies | AMD StoreMI Technology, AMD "Zen 3" Core Architecture, AMD Ryzen Master Utility, AMD Ryzen VR-Ready Premium | AMD StoreMI Technology, AMD Ryzen Master Utility |
| Identifiers | ||
| Product ID (OEM) | 100-000000063 | — |
| Product ID (Box) | 100-100000063WOF | 100-100000277WOF |
| Bundled cooler | Not included | Not included |