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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.
AMD first announced the platform as "Socket 4x4" on June 1, 2006, citing customer feedback for such a system. A four-core system has been exhibited as a demo at AMD headquarters on July 25, 2006. AMD has claimed that the systems which consist of a pair of CPUs will cost below US$1000 altogether with a suitable motherboard. The motherboards strongly resemble dual-socket Opteron 22xx series motherboards as they share the same socket and one bank of memory DIMMs per CPU, but the motherboards of the platform have support for regular unbuffered DDR2 RAM while the Opteron setup requires registered memory. The platform also has support for multiple graphics cards.
An eight core reference system was demonstrated in an event held early May 2007 by AMD.
Read more about this topic: AMD Quad FX Platform