For years, the wisdom has been that if you wanted a dedicated gaming machine, you bought a desktop. Gaming components were too unwieldy to fit in a notebook form factor, and if you tried to put together a machine with desktop-caliber components, it always ended up too big and heavy to be truly portable. However, recent gaming laptops have defied that history, packing lots of power into thinner and lighter chassis. They're still not as slim as Ultrabooks, and meanwhile there's still a gap in performance versus desktop machines. Even so, your days of lugging around a large desktop tower to LAN parties are over. We've taken a look at some of the more recent entries in the race to build a smaller gaming machine to find ones that can fit your needs -- and budget.