The Acer Predator 21x is the biggest, most powerful gaming laptop I've ever seen. It packs dual GTX 1080 graphics cards in SLI feeding a 21 inch, curved, ultrawide display. The Acer Predator 21x costs a whopping $9000 and is limited to 300 units. Is the Acer Predator 21x the beefiest gaming laptop in the world? Probably...