AMD Quad FX

The AMD Quad FX platform is an AMD platform targeted at enthusiasts which allows users to plug two Socket F Athlon 64 FX or 2-way Opteron processors (CPUs) into a single motherboard for a total of four physical cores. This is a type of dual processor setup, where two CPUs are installed on a motherboard to increase computing power. The major difference between the platform and past dual processor systems like Xeon (pre Intel 5000X/P chipset) is that each processor has its own dedicated memory stores. The Quad FX platform also has HyperTransport capability targeted toward consumer platforms.

In May 2007, AMD officially codenamed the eight core setup with two Phenom FX processors to be the FASN8 (pronounced as "fascinate", /ˈfæsᵻneɪt/, in short for First AMD Silicon Next-gen 8-core Platform) from the previous codename "4x4+" used in Analyst Day presentations.

In each socket resides an AMD Athlon 64 FX CPU. Each socket is connected using AMD's Direct Chip Module, this dual-processor architecture was dubbed by AMD as the "Dual Socket Direct Connect Architecture" (DSDC Architecture), providing a dedicated channel between the CPU cores and from each CPU out to the system memory. Due to the nature of the Direct Connect architecture, each CPU can access the other's dedicated memory store. The both of them, constituting one four-core system, have a power consumption (TDP) of 250 W for each 125 W labelled TDP.

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