If you're a gamer, you don't have it easy when buying laptops: You may want a sleek, lightweight Ultrabook when you're traveling, but you also want the big, powerful desktop replacement when you're home. What to do? Razer thinks you can have both. It's launching the Blade Stealth, a 12.5-inch ultraportable with some proper gaming cred. Its centerpiece is an optional Thunderbolt 3–powered dock, the Core (below), which lets you use most any modern desktop graphics card when integrated video won't cut it—if you just have to play Battlefront at max detail with a GeForce GTX 980 Ti, you can. It has Ethernet and four USB 3.0 ports, too, so you only need to plug in one cable to get all your usual peripherals.