There's a website that helps you pick and order the parts, you can get advice on builds, or use someone else's build http://pcpartpicker.com/ http://pcpartpick

There's a website that helps you pick and order the parts, you can get advice on builds, or use someone else's build http://pcpartpicker.com/ http://pcpartpicker.com/ Otherwise there are plenty of small companies that supply gaming PCs, as well as Asus (Republic of Gamers) and Dell (through its purchase of Alienware).