An anonymous reader writes "I'm intent on buying a laptop to do some on-location video editing when I'm filming but am unsure about the specs. The convenience of just plugging in an AVCHD camera and then being able to edit the clips immediately (without converting) is very appealing, if the editing timeline can be previewed realtime (i.e. rendered sufficiently well on-the-fly). My budget is obviously an issue but a laptop is harder to expand and I'm only counting on being able to add external USB 3 HDs to my setup so I'd have to get the rest right immediately and do so by ordering a customized one. I've already browsed plenty of forums but have not yet found any reliable answers or consensus, which is why I turn to my fellow slashdotters."