FX-4100 vs 840: comparison
Comparison of FX-4100 and 840: key differences and a full specification table.
Key differences
FX-4100 has a higher base clock (3.6 GHz vs 3.2 GHz).
Both processors match on: core count (4), thread count (4), TDP (95 W).
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 | FX-4100 | 840 |
|---|---|---|
| Cores / threads | 4 / 4 | 4 / 4 |
| Max boost clock | 3.8 GHz | — |
| L3 cache | 8 MB | — |
| TDP | 95 W | 95 W |
| Process | 32 nm | — |
Full specification table
Differing values are highlighted. This is not a better/worse rating: numbers from different architectures are not always comparable.
| Parameter | FX-4100 | 840 |
|---|---|---|
| General | ||
| Codename | FX Legacy | Phenom |
| Segment | Boxed Processor | Boxed Processor |
| Product line | AMD FX 4-Core Black Edition Processors | AMD Phenom II X4 |
| Product family | AMD FX-Series Processors | AMD Phenom |
| Process | 32 nm | — |
| Unlocked for overclocking | Yes | No |
| CPU | ||
| Cores | 4 | 4 |
| Threads | 4 | 4 |
| Base clock | 3.6 GHz | 3.2 GHz |
| Max boost clock | 3.8 GHz | — |
| L1 cache | 192 KB | 512 KB |
| L2 cache | 4 MB | 2 MB |
| L3 cache | 8 MB | — |
| TDP | 95 W | 95 W |
| Memory | ||
| Memory types | DDR3 | DDR3 |
| Max memory speed | 1.866 GHz | — |
| Graphics | ||
| Has integrated graphics | No | No |
| Package and thermal | ||
| Sockets supported | AM3+ | AM3 |
| TJUNCTION | 70.5 °C | 71 °C |
| Security and virtualization | ||
| Supported technologies | AES | — |
| Identifiers | ||
| Product ID (OEM) | FD4100WMW4KGU | HDX840WFK42GM |
| Product ID (Box) | FD4100WMGUSBX | HDX840WFGMBOX |