CybertronPC Assassin GM4242B Gaming Desktop (Black/Blue) (Discontinued by Manufacturer) Processor: AMD FX 4170 4.20GHz Quad Core | Motherboard: AMD 970 Chipset | Memory: 8GB DDR3 Ballistix SDRAM (expandable to 32GB) | Hard Drive: 1TB (7200 RPM) | Genuine Windows 8 64-bit Graphics: 2 x AMD Radeon HD6570 1GB Cards in CrossFireX Configuration | Optical Drive: 24X DVDRW Dual-Layer Drive | Audio: High Definition 2/4/5.1/7.1 Channel | Integrated 10/100/1000 Gigabit Ethernet LAN Expansions: Bays Total (Free) - 3 ( 1 ) External 5.25" | 6 ( 5 ) Internal 3.5" | 2 (2) Internal 2.5" | Slots Total (Empty) - 2 ( 2 ) PCI | 3 ( 3 ) PCI Express x1 | 2 ( 0 ) PCI Express x16 | 4 ( 2 ) DIMM 240-Pin Connectivity: 1 x PS/2 Keyboard / Mouse Combo | 4 x USB 3.0 [2 front, 2 rear] | 9 x USB 2.0 [1 front, 8 rear] | 1 x RJ-45 Network Ethernet 10/100/1000 Gigabit | Audio | 2 x D-Sub VGA | 2 x HDMI | 2 x DVI Chassis: In-Win MANA 136 Mid-Tower Gaming Case with 650 Watt Power Supply | Accessories: Keyboard and Optical Mouse w/Scroll | Service & Support Details: 1 Year Parts & Labor Warranty | Free Lifetime Tech Support