
Looking for a PC that has a similar feel to a console well then the Alienware X51 is the answer.  This a gaming PC in a small form factor with a Mini-ITX board inside.  The PC will have options for i3 or i5 processors, 4GB of Ram, full size 1GB GDDR5 NVIDIA GeForce GT 545, and 1TB hard drive.  
Full specs below
Alienware X51 Product Specifications:
    Intel Core i3 Dual Core (standard) and Intel Core i5 and i7 Quad Core Processor Options
    Intel H61 Express Chipset Architecture
    Mini-ITX Motherboard
    Powerful NVIDIA Graphics Card Options
        1GB GDDR5 NVIDIA GeForce GT 545 (Standard)
        1GB GDDR5 NVIDIA GeForce GTX 555
    Configure with up to 8GB of DDR3 Memory (4GB Standard); 2x 240-Pin DDR3 SDRAM Slots
    Fast 7,200RPM 1TB Hard Drive
    Microsoft Windows 7 Home Premium
    Slot-Loading Dual Layer DVD Burner (Standard) or optional Blu-ray Disc Reader
    Internal High-Definition 7.1 Performance Audio with Waves MAXX Audio Software
    Integrated 10/100/1000Mbps Gigabit Ethernet NIC and Integrated 802.11 a/b/g/n Wi-Fi Wireless LAN (standard)
    USB 2.0 (6x); USB 3.0 (2x); Microphone In; Headphone/Speaker Out; HDMI 1.4 Output; RJ-45 Gigabit Ethernet; Front, Rear and Center Speaker Ports; SPDIF Digital Output (TOSLINK); SPDIF Digital Output (Coax)
    Alienware 240 Watt Power Supply (Standard) or optional 330 Watt Power Supply
    Dual-orientation tower system dimensions: h: 13.5" (343mm) x w: 3.74" (95mm) x d: 12.52" (318mm)
    Starting Weight: 12.1 lbs. (5.49 Kg.)
via 
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