As expected, Dell Meanwhile, Dell says its flagship M18x is the most powerful gaming notebook available -- and at 16lbs, it's probably the heaviest too. The 18.4-incher will be offered with a factory-overclocked 4GHz Core i7 Extreme, dual-graphics chips from both Nvidia and ATI, support for up to 32GB of RAM, a 1080p display, HDMI input, and five programmable keyboard keys. Pricing starts at $999, but you can expect to pay far more for a fully loaded model.