AMD Opteron 856: specs and benchmarks
Summary
AMD started Opteron 856 sales on April 2006. This is an Athens architecture desktop processor primarily aimed at professional systems. It has 1 core and 1 thread, and is based on 90 nm manufacturing technology, with a maximum frequency of 3000 MHz and a locked multiplier.
Compatibility-wise, this is AMD Socket 940 processor with a TDP of 92 Watt.
Primary details
Opteron 856 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 | Server | |
| Architecture codename | Athens (2003−2006) | |
| Release date | April 2006 (18 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 | 3 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 | 90 nm | of 3 nm (Core Ultra 9 285K) |
| Number of transistors | 106 million | of 135,240 million (EPYC 9684X) |
| 64 bit support | + | |
| Windows 11 compatibility | - |
Compatibility
Information on Opteron 856 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 | 8 | |
| Socket | 940 | |
| Power consumption (TDP) | 92 Watt | of 3100 ‑ 4500 (Ryzen 7 7435H) |
Similar processors
Here is our recommendation of several processors that are more or less close in performance to the one reviewed.
