The Dell XPS 1730...a monster of a laptop, or rather a desktop replacement. Yes, it will run from it's battery, but not for long and not as fast. To start with, it has a 230 watt power supply, so right out of the bos you know it's not your dad's laptop. With it's 17" screen, full keyboard, dual video GPU, dual harddrive bay, you only need one but you can have a second drive for either more storage or raid, throw in 4 GB of ram, WiFi and bluetooth, blu ray drive and tv tuner port, it's more machine than most will every need!.