Athlon 64 FX-55 vs Phenom II X4 955 BE
Primary details
Comparing Phenom II X4 955 BE 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 | Deneb (2009−2011) | Clawhammer (2001−2005) |
| Release date | 23 April 2009 (15 years ago) | 10 October 2004 (20 years ago) |
| Launch price (MSRP) | no data | $180 |
Detailed specifications
Phenom II X4 955 BE 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 | 4 (Quad-Core) | 1 (Single-Core) |
| Threads | 4 | 1 |
| Base clock speed | 3.2 GHz | 2.6 GHz |
| Boost clock speed | 3.2 GHz | 2.6 GHz |
| L1 cache | 128 KB (per core) | 128 KB |
| L2 cache | 512 KB (per core) | 1 MB |
| L3 cache | 6 MB (shared) | 0 KB |
| Chip lithography | 45 nm | 130 nm |
| Die size | 258 mm2 | 193 mm2 |
| Maximum case temperature (TCase) | no data | 63 °C |
| Number of transistors | 758 million | 105 million |
| 64 bit support | + | + |
| Windows 11 compatibility | - | - |
| Unlocked multiplier | + | + |
Compatibility
Information on Phenom II X4 955 BE 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 | AM3 | 939 |
| Power consumption (TDP) | 125 Watt | 104 Watt |
Virtualization technologies
Virtual machine speed-up technologies supported by Phenom II X4 955 BE and Athlon 64 FX-55 are enumerated here.
| AMD-V | + | - |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Phenom II X4 955 BE and Athlon 64 FX-55. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR3 | DDR1 Depends on motherboard |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | On certain motherboards (Chipset feature) | On certain motherboards (Chipset feature) |
Peripherals
Specifications and connection of peripherals supported by Phenom II X4 955 BE and Athlon 64 FX-55.
| PCIe version | 2.0 | no data |
Pros & cons summary
| Recency | 23 April 2009 | 10 October 2004 |
| Physical cores | 4 | 1 |
| Threads | 4 | 1 |
| Chip lithography | 45 nm | 130 nm |
| Power consumption (TDP) | 125 Watt | 104 Watt |
Phenom II X4 955 BE has an age advantage of 4 years, 300% more physical cores and 300% more threads, and a 188.9% more advanced lithography process.
Athlon 64 FX-55, on the other hand, has 20.2% lower power consumption.
We couldn't decide between Phenom II X4 955 BE and Athlon 64 FX-55. We've got no test results to judge.
Should you still have questions on choice between Phenom II X4 955 BE and Athlon 64 FX-55, ask them in Comments section, and we shall answer.
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