Netbook for traveling and sorting of photos.

I am planning to spend several months traveling later in the year, and looking for a small computer to take with me. Other then surfing the net, I mainly need the laptop for backing-up, sorting and viewing of photos. I doubt I would be processing raw files.... I use a olympus EM-5 so have decent size images to work with.

I was wondering wither anyone uses a netbook for such tasks? , are they speedy enough not to be irritating. I would love a ultra book but they are quite pricey.