Athlon Phenom II X2 550, Dual Core 3.1 GHZ Socket AM3 Processor, included heatsink.

　　If preferred),(Will open to 4 cores and run at 3.6 GHz.

　　Gigabyte MA785G-UD3H Board.

　　ATX Form Factor.

　　4 Slots DDR2 DRAM.

　　1x PCI express x16 slot at x16.

　　1x PCI reveal x16 slot at x4.

　　3 PCI reveal x1 slots.

　　1X ATA133.

　　6X SATA.

　　Onboard ATI Radeon HD4200.

　　Realtek ALC889A Audio.

　　Realtek 8111C Gigabit LAN.

　　I have actually an upgraded quiet heatsink and 8GB DDR2 RAM readily available if requested. E-mail for information.