I disagree with the above post. If you are gaming all you need is an i5 but I would get a 2500k or 3570k as they can be overclocked. I have the 3570k and love it. If you do get a z77 motherboard like the asrock z77. I have an asus sabertooth z77 but thats a bit overkill. I do agree about getting a 128gb ssd and a 7200 rpm hard disk. as for PSU stick with the 850 and get a gtx 670. the 850 will give lots of wiggle room for a 2nd 670 down the line and enough power for anything you add later to the rig. (I.E. fans, lights, liquid cooling, pcie inputs usb etc etc) also I am a big fan of nice large cases. http://www.amazon.com/Antec-Fleet-DF-85-Gaming-Computer... is a wonderful case for just a bit more.