Athlon 64 FX-55 vs Athlon 64 X2 3800+
Primary details
Comparing Athlon 64 X2 3800+ and Athlon 64 FX-55 processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | not rated | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Market segment | Desktop processor | Desktop processor |
| Architecture codename | Manchester (2005−2006) | Clawhammer (2001−2005) |
| Release date | August 2005 (19 years ago) | 10 October 2004 (20 years ago) |
| Launch price (MSRP) | no data | $180 |
Detailed specifications
Athlon 64 X2 3800+ and Athlon 64 FX-55 basic parameters such as number of cores, number of threads, base frequency and turbo boost clock, lithography, cache size and multiplier lock state. These parameters indirectly say of CPU speed, though for more precise assessment you have to consider their test results.
| Physical cores | 2 (Dual-core) | 1 (Single-Core) |
| Threads | 2 | 1 |
| Base clock speed | no data | 2.6 GHz |
| Boost clock speed | 2 GHz | 2.6 GHz |
| L1 cache | 256K | 128 KB |
| L2 cache | 512 KB | 1 MB |
| L3 cache | 0 KB | 0 KB |
| Chip lithography | 90 nm | 130 nm |
| Die size | 220 mm2 | 193 mm2 |
| Maximum case temperature (TCase) | no data | 63 °C |
| Number of transistors | 154 million | 105 million |
| 64 bit support | + | + |
| Windows 11 compatibility | - | - |
| Unlocked multiplier | - | + |
Compatibility
Information on Athlon 64 X2 3800+ and Athlon 64 FX-55 compatibility with other computer components: motherboard (look for socket type), power supply unit (look for power consumption) etc. Useful when planning a future computer configuration or upgrading an existing one. Note that power consumption of some processors can well exceed their nominal TDP, even without overclocking. Some can even double their declared thermals given that the motherboard allows to tune the CPU power parameters.
| Number of CPUs in a configuration | 1 | 1 |
| Socket | 939 | 939 |
| Power consumption (TDP) | 89 Watt | 104 Watt |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Athlon 64 X2 3800+ and Athlon 64 FX-55. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | no data | DDR1 Depends on motherboard |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | no data | On certain motherboards (Chipset feature) |
Synthetic benchmark performance
Various benchmark results of the processors in comparison. Overall score is measured in points in 0-100 range, higher is better.
Passmark
Passmark CPU Mark is a widespread benchmark, consisting of 8 different types of workload, including integer and floating point math, extended instructions, compression, encryption and physics calculation. There is also one separate single-threaded scenario measuring single-core performance.
Pros & cons summary
| Physical cores | 2 | 1 |
| Threads | 2 | 1 |
| Chip lithography | 90 nm | 130 nm |
| Power consumption (TDP) | 89 Watt | 104 Watt |
Athlon 64 X2 3800+ has 100% more physical cores and 100% more threads, a 44.4% more advanced lithography process, and 16.9% lower power consumption.
We couldn't decide between Athlon 64 X2 3800+ and Athlon 64 FX-55. We've got no test results to judge.
Should you still have questions on choice between Athlon 64 X2 3800+ and Athlon 64 FX-55, ask them in Comments section, and we shall answer.
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