douglasboyd
enthusiast
I carry a Samsung i7 laptop and run Lightroom 5 while traveling. If you use 24mp files or smaller, then 4gB of memory is enough. But if you are shooting with 36mp or higher, I believe it would be better to have 6gB of internal memory. In any case make sure you are using the six core i7 with an additional 6 virtual cores and a decent GPU for fast performance. My laptop weighs under 4.5 pounds and has 3-4 hours of battery life running Lightroom. This is perfect for processing raw images while on the plane. This system sells on eBay for $600-700. If you prefer to pay 2-3 times more for the same thing then you may be able to find an Apple Airbook that is almost as fast.
==Doug
==Doug