AMD Athlon 1266: specs and benchmarks
Summary
AMD started Athlon 1266 sales 21 March 2001. Based on a Thunderbird C architecture, this desktop processor is primarily aimed at home systems. It has 1 core and 1 thread, and is based on 180 nm manufacturing technology, with a maximum frequency of 1266 MHz and a locked multiplier.
Compatibility-wise, this is AMD Socket A processor with a TDP of 66 Watt. It supports DDR1 Depends on motherboard memory.
Primary details
Athlon 1266 processor market type (desktop or notebook), architecture, sales start time and pricing.
| Place in the ranking | not rated | |
| Place by popularity | not in top-100 | |
| Market segment | Desktop processor | |
| Architecture codename | Thunderbird C (2000−2001) | |
| Release date | 21 March 2001 (23 years ago) |
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 | |
| Boost clock speed | 1.27 GHz | of 6.2 GHz (Core i9-14900KS) |
| L1 cache | 128 KB | of 80 KB (EPYC 9965) |
| L2 cache | 256 KB | |
| Chip lithography | 180 nm | of 3 nm (Core Ultra 9 285K) |
| Die size | 120 mm2 | |
| Number of transistors | 37 million | of 135,240 million (EPYC 9684X) |
| 64 bit support | - |
Compatibility
Information on Athlon 1266 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 (Xeon Platinum 8454H) |
| Socket | A | |
| Power consumption (TDP) | 66 Watt | of 3100 ‑ 4500 (Ryzen 7 7435H) |
Memory specs
Types, maximum amount and channel number of RAM supported by Athlon 1266'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 1266.
| Integrated graphics card | On certain motherboards (Chipset feature) |
Similar processors
Here is our recommendation of several processors that are more or less close in performance to the one reviewed.
