Athlon 64 FX-55: specs and benchmarks
Aggregate performance score
Athlon 64 FX-55 provides poor benchmark performance at 0.25% of a leader's which is a 96-core EPYC 9655P.
Summary
AMD started Athlon 64 FX-55 sales 10 October 2004 at a recommended price of $180. This is a Clawhammer architecture desktop processor primarily aimed at office systems. It has 1 core and 1 thread, and is based on 130 nm manufacturing technology, with a max turbo frequency of 2.6 and an unlocked multiplier.
Compatibility-wise, this is AMD Socket 939 processor with a TDP of 104 Watt and a maximum temperature of 63 °C. It supports DDR1 Depends on motherboard memory.
Primary details
Athlon 64 FX-55 processor market type (desktop or notebook), architecture, sales start time and pricing.
| Place in the ranking | 3163 | |
| Place by popularity | not in top-100 | |
| Market segment | Desktop processor | |
| Power efficiency | 0.23 | of 100.00 (Ryzen Z1 Extreme) |
| Architecture codename | Clawhammer (2001−2005) | |
| Release date | 10 October 2004 (20 years ago) | |
| Launch price (MSRP) | $180 | of 17,906 (Xeon Platinum 8280L) |
Cost-effectiveness evaluation
Performance per price, higher is better.
Detailed specifications
Basic microprocessor parameters such as number of cores, number of threads, base frequency and turbo boost clock, lithography, cache size and multiplier lock state. These parameters can generally indicate CPU performance, but to be more precise you have to review its test results.
| Physical cores | 1 (Single-Core) | |
| Threads | 1 | |
| Base clock speed | 2.6 GHz | of 4.7 GHz (FX-9590) |
| Boost clock speed | 2.6 GHz | of 6.2 GHz (Core i9-14900KS) |
| L1 cache | 128 KB | of 80 KB (EPYC 9965) |
| L2 cache | 1 MB | of 2 MB (Xeon 6980P) |
| L3 cache | 0 KB | of 1152 MB (EPYC 9684X) |
| Chip lithography | 130 nm | of 3 nm (Apple M3 Max 16-Core) |
| Die size | 193 mm2 | |
| Maximum case temperature (TCase) | 63 °C | of 105 °C (Core i7-5950HQ) |
| Number of transistors | 105 million | of 135,240 million (EPYC 9684X) |
| 64 bit support | + | |
| Windows 11 compatibility | - | |
| Unlocked multiplier | + |
Compatibility
Information on Athlon 64 FX-55 compatibility with other computer components and devices: 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 | of 8 (Opteron 842) |
| Socket | 939 | |
| Power consumption (TDP) | 104 Watt | of 500 Watt (Xeon 6960P) |
Memory specs
Types, maximum amount and channel number of RAM supported by Athlon 64 FX-55's memory controller. Depending on the motherboard, higher memory frequency may be supported.
| Supported memory types | DDR1 Depends on motherboard |
Graphics specifications
General parameters of a GPU integrated into Athlon 64 FX-55.
| Integrated graphics card | On certain motherboards (Chipset feature) |
Benchmark performance
Single-core and multi-core benchmark results of Athlon 64 FX-55. Overall benchmark performance is measured in points in 0-100 range, higher is better.
Combined synthetic benchmark score
This is our combined benchmark performance rating. We are regularly improving our combining algorithms, but if you find some perceived inconsistencies, feel free to speak up in comments section, we usually fix problems quickly.
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.
Send your test results of Athlon 64 FX-55.
Intel equivalent
According to our data, the closest Intel alternative to Athlon 64 FX-55 is Celeron G440, which is faster by 4% and higher by 15 positions in our ranking.
Here are some closest Intel rivals to Athlon 64 FX-55:
Similar processors
Here is our recommendation of several processors that are more or less close in performance to the one reviewed.
Recommended GPUs
People consider these graphics cards to be good for Athlon 64 FX-55, according to our PC configuration statistics.
These are the fastest graphics cards for Athlon 64 FX-55 in our user configuration statistics. There is a total of 7 configurations using Athlon 64 FX-55 in our database.
