AMD · Athlon 64 FX · 2004 · 939
The AMD Athlon 64 FX-55 is a desktop processor with 1 core, released in 2004 at an MSRP of $827. It is part of the Athlon 64 FX lineup, using the Athlon 64 FX platform, and fits the 939 socket. Internally, it is built on the "K8" architecture. It operates at a fixed 2.6 GHz. AMD manufactures the "K8" silicon on a 130nm process node. The multiplier is unlocked, making overclocking straightforward. This processor supports DDR memory. With a TDP of 104W, the Athlon 64 FX-55 sits in a typical power envelope for a modern desktop CPU. This processor has no integrated graphics — a discrete GPU is required. The cache hierarchy consists of 64KB of L1 and 1MB of L2 cache. There is no L3 cache on this processor.
Clawhammer die on Socket 939 — no longer required registered DDR, making the FX platform significantly cheaper to build. The last single-core Athlon 64 FX before the FX-60 dual-core era.
| Brand | AMD |
|---|---|
| Family | Athlon 64 FX |
| Series | Athlon 64 FX |
| Architecture | K8 |
| Type | Desktop |
| Launch year | 2004 |
| Cores | 1 |
| Threads | 1 |
| Base clock | 2.6 GHz |
| Boost clock | 2.6 GHz |
| L1 cache | 64KB |
| L2 cache | 1MB |
| TDP | 104W |
| Socket | 939 |
| Process | 130nm |
| Memory type | DDR |
| Integrated graphics | None |
| Chipsets | nForce4 Ultra, nForce4 SLI, K8T890 |
| Launch MSRP | $827 |
| Part number | ADAFX55ASBOX |
| OEM / tray part number | ADAFX55DEI5AS |