[ AMD K8 DESKTOP AND MOBILE PROCESSORS // IDENTIFIED CPU ]
AMD Athlon 64 FX-51
First-generation SledgeHammer FX enthusiast SKU, 2003. 2.2 GHz single core; 1 MB L2; Socket 940; dual-channel registered ECC DDR; HyperTransport.
MODEL IDENTIFICATION: AMD Athlon 64 FX-51. Match full model suffix, stepping and package to the physical item and cited documentation.
Recorded specifications
| Cataloged model | AMD Athlon 64 FX-51 |
|---|---|
| Era / family | First-generation SledgeHammer FX enthusiast SKU, 2003. |
| Model specifications | 2.2 GHz single core; 1 MB L2; Socket 940; dual-channel registered ECC DDR; HyperTransport. |
| Compatibility | Socket 940 board and registered ECC DDR; not Socket 939. |
| Variants / limits | Registered-memory Socket 940 differs from later FX models. |
Compatibility and variants
- Socket 940 board and registered ECC DDR; not Socket 939.
- Registered-memory Socket 940 differs from later FX models.
- Check system-vendor CPU support, board revision, firmware minimum, package, memory, cooling and power before installation; similar socket naming does not prove compatibility.
Service and archival notes
Record OPN, DIMMs, BIOS and cooler.
Archive the complete marking/OPN/sSpec, stepping, physical condition, tested host revision, firmware, memory population, cooling, and test conditions. Distinguish published limits from measurements.
Sources & further reading
- Model identification/specification search — AMD Athlon 64 FX-51Model-level part identification and specification cross-reference.
- AMD technical archive — AMD Athlon 64 FX-51 product familyAMD-authored processor data books and family specifications.
- AMD product-history reference — AMD Athlon 64 FX-51Manufacturer history reference for product-family context.
- Linus Tech Tips — RETRO UNBOXING AMD Athlon 64 FX-51 Sledgehammer ProcessorIndependent video review; treat as supplementary context, not primary manufacturer documentation.
Use the matching manufacturer data sheet revision and platform vendor’s CPU list for final fit decisions.