Athlon 1266 vs EPYC 7261
Contents
Primary details
Comparing processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 1273 | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Market segment | Server | Desktop processor |
| Series | AMD EPYC | no data |
| Power efficiency | 1.58 | no data |
| Designer | AMD | AMD |
| Manufacturer | GlobalFoundries | no data |
| Architecture codename | Naples (2017−2018) | Thunderbird C (2000−2001) |
| Release date | 14 June 2018 (7 years ago) | 21 March 2001 (25 years ago) |
Detailed specifications
Basic parameters of EPYC 7261 and Athlon 1266: 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 | 8 (Octa-Core) | 1 (Single-Core) |
| Threads | 16 | 1 |
| Base clock speed | 2.5 GHz | no data |
| Boost clock speed | 2.9 GHz | 1.27 GHz |
| Multiplier | 25 | no data |
| L1 cache | 96K (per core) | 128 KB |
| L2 cache | 512K (per core) | 256 KB |
| L3 cache | 32 MB (shared) | no data |
| Chip lithography | 14 nm | 180 nm |
| Die size | 213 mm2 | 120 mm2 |
| Maximum case temperature (TCase) | 81 °C | no data |
| Number of transistors | 4,800 million | 37 million |
| 64 bit support | + | - |
| Windows 11 compatibility | - | no data |
| Unlocked multiplier | + | - |
Compatibility
Information on EPYC 7261 and Athlon 1266 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 | 2 (Multiprocessor) | 1 |
| Socket | SP3 | A |
| Power consumption (TDP) | 170 Watt | 66 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by EPYC 7261 and Athlon 1266. You'll probably need this information if you require some particular technology.
| AES-NI | + | - |
| AVX | + | - |
Virtualization technologies
Virtual machine speed-up technologies supported by EPYC 7261 and Athlon 1266 are enumerated here.
| AMD-V | + | - |
Memory specs
Types, maximum amount and channel quantity of RAM supported by EPYC 7261 and Athlon 1266. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR4-2666 | DDR1 Depends on motherboard |
| Maximum memory size | 2 TiB | no data |
| Max memory channels | 8 | no data |
| Maximum memory bandwidth | 170.671 GB/s | no data |
| ECC memory support | + | - |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | no data | On certain motherboards (Chipset feature) |
Peripherals
Specifications and connection of peripherals supported by EPYC 7261 and Athlon 1266.
| PCIe version | 3.0 | no data |
| PCI Express lanes | 128 | no data |
Pros & cons summary
| Recency | 14 June 2018 | 21 March 2001 |
| Physical cores | 8 | 1 |
| Threads | 16 | 1 |
| Chip lithography | 14 nm | 180 nm |
| Power consumption (TDP) | 170 Watt | 66 Watt |
EPYC 7261 has an age advantage of 17 years, 700% more physical cores and 1500% more threads, and a 1186% more advanced lithography process.
Athlon 1266, on the other hand, has 158% lower power consumption.
We couldn't decide between AMD EPYC 7261 and AMD Athlon 1266. We've got no test results to judge.
Be aware that EPYC 7261 is a server/workstation processor while Athlon 1266 is a desktop one.
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