Opteron is a name for AMD's line of server-class CPUs.

The Opteron line is designed to complete against the Intel Xeon server-class CPUs.

Opteron processors are designed to execute 32-bit and 64-bit instuctions simultaneously. This enables them to directly address more than 4GB of RAM.

Opteron CPUs feature an L1 cache with 64KB of RAM for data and 64KB of RAM for instructions.

The 1024KB L2 cache in an Opteron CPU operates at the full speed of the CPU.

These L1 and L2 cache numbers are per core. In a dual-core Opteron CPU, these numbers would be doubled.

Both the L1 and L2 cache are protected from corruption by ECC (Error Correcting Code) protection.

Opteron CPUs include their own built-in memory controller, which reduces latency on memory access. Opteron processors require the use of registered DDR SDRAM.

The HyperTransport bus of the Opteron CPU supports a frequency of 800MHz or 1000Mhz.

Opteron CPUs support MMX, Extended 3DNow!, and SSE2. Some models of Opteron CPUs also support SSE3.

Opteron CPUs are designed to fit Socket-940 CPU sockets.

Opteron