DESC: A8N-SLI Premium supports AMD 939-pin Athlon 64 FX/ Athlon 64 processors with 1MB/512KB L2 cache which is based on 64-bit architecture. It features 2000/1600 MT/s HyperTransport Bus and dual-channel un-buffered DDR400 memory support. Currently, it also supports AMD Athlon 64 X2 CPU. It's no longer either quiet operation or low system temperature. The A8N-SLI Premium, with AI Cool Pipe, lets you have the best of both worlds. This unique heat pipe design provides heat dissipation performance comparable to that of cooling fans without the annoying rotation noise. AI Selector enables easy switching between single-GPU and dual-GPU modes by simply clicking on the mouse under Windows operating system. It begins the era of electronic SLI switch, allowing users to enjoy both SLI and non-SLI applications with ease. Supports AMD Cool 'n' Quiet! Technology, which monitors system operation and automatically adjusts CPU voltage and frequency for a cool and quiet environment.