AMD · Opteron · 2006 · Socket 940
The AMD Opteron 856 is a server processor with 1 core, released in 2006 at an MSRP of $1,514. It is part of the Opteron lineup, using the Opteron 800 platform, and fits the Socket 940 socket. Internally, it is built on the "K8" architecture. It operates at a fixed 3 GHz. AMD manufactures the "K8" silicon on a 90nm process node. This processor supports DDR memory across 2 channels, with ECC support standard for data integrity in server workloads. It supports both single-socket (1P) and dual-socket (2P) configurations. With a TDP of 92.6W, the Opteron 856 sits in a typical power envelope for a modern desktop CPU. The cache hierarchy consists of 128KB/core of L1 and 1MB of L2 cache. There is no L3 cache on this processor.
1-core K8 Opteron (Athens) at 3GHz on Socket 940, launched April 2006. Athens is the 90nm 4- to 8-socket refresh of the original Opteron, sharing Troy's SSE3-capable core. It scales to four- and eight-socket systems.
| Brand | AMD |
|---|---|
| Family | Opteron |
| Series | Opteron 800 |
| Architecture | K8 |
| Codename | Athens |
| Launch year | 2006 |
| Cores | 1 |
| Threads | 1 |
| Base clock | 3 GHz |
| Boost clock | 3 GHz |
| L1 cache | 128KB/core |
| L2 cache | 1MB |
| TDP | 92.6W |
| Socket | Socket 940 |
| Process | 90nm |
| Memory type | DDR |
| Memory channels | 2 |
| ECC memory | Yes |
| Socket scalability | 1P and 2P |
| Launch MSRP | $1,514 |
| OEM / tray part number | OSA856FAA5BM |