CybertronPC Prime 1 Alpha Gaming Desktop - Intel i7-4770K 3.5GHz Quad-Core Processor, 32GB DDR3 Memory, 2x Radeon R9 290X Video Cards in Crossfire, 2TB HDD, 802.11bgn Wireless, Windows 8.1 (Discontinued by Manufacturer) Genuine Windows 8.1 64-bit Graphics: 2x Radeon R9 290X 4GB Video Cards in XFRX | Blu-ray ROM/DVDRW Drive | Audio: 7.1 Channel | Gigabit LAN | Gaming KBD & MSE | Fan Controls Expansion Bays/Slots Total(Free): 3(1) 5.25" | 4(3) Int 3.5" | 4(3) Int 2.5" | 1(0) PCI| 3(1) PCI-E x1 | 3(1) PCI-E x16 | 4(0) DIMM 240P| Card Reader Connectivity: 9x USB 3.0 | 4x USB 2.0 | 1x RJ-45 Network Ethernet 10/100/1000 | Wireless 802.11bgn| Audio| 4x DVI | 2x DisplayPort | 2x HDMI Chassis: Cooler Master Cosmos SE w/Liquid Cooling | 80PLUS Bronze Cert. 1000W PSU | 1 Year Parts & Labor Warranty | Free Lifetime Tech Support