AMD Athlon™ 64 FX Processor Model Numbers and Feature Comparison
AMD Athlon™ 64 FX processors are identified by an alphanumeric series number.
- Series number: FX- ##
- ## indicates a specific series number
- Correct usage for the processor is:
- AMD Athlon™ 64 FX processors – when referring to the processor family or lineup
- AMD Athlon 64 FX processor - when referring to a generic processor in the family
- AMD Athlon 64 FX-## processor - when referring to a specific series number
- For example, the first processor in this family, launched on September 23, 2003, was the AMD Athlon 64 FX-51 processor.
The Series Number for the AMD Athlon 64 FX processor communicates relative performance among AMD Athlon 64 FX processors. The higher the series number, the better the overall software performance of the processor.
The chart below lists current AMD Athlon 64 FX processors and their associated features and technical specs.
| Features |
FX-53 |
FX-55 |
| Frequency |
2.4 GHz |
2.6 GHz |
| Socket |
Socket 939 |
| Process Technology |
130nm, SOI |
| Number of Transistors |
105.9 Million |
| 64-bit Instruction Set Support |
Yes,
AMD64 technology |
| 32-bit Instruction Set Support |
Yes,
x86 ISA |
HyperTransport™ Support |
1 non-coherent HyperTransport™ technology link |
| Integrated DDR Memory Controller (MCT) |
Yes,
Dual-channel (16-bit ECC) |
| Memory Type |
Unbuffered DDR memory
PC3200, PC 2700, PC 2100, or PC1600 |
Total Processor-to-System Bandwidth |
HyperTransport: up to 8.0 GB/s @ 2.0GHz
MCT: up to 6.4 GB/s @ 400MHz
Total: up to 14.4 GB/s |
Integrated Northbridge |
Yes,
128-bit data path @ CPU core frequency |
High-Performance, On-chip Cache |
L1: 128KB
L2: 1024KB (exclusive)
Total Effective Cache: 1152KB |
| 3D and Multimedia Instructions |
3DNow!™ Professional technology, SSE2 |
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