On top of what you've spec'd I usually look at:
-ports & connectivity (eg. USB, video I/O, bluetooth, memory card slots) how many and where they are located
-what type of dvd RW it comes with (though this is more often than not, a cheap, loud whirring, prone to break down piece of crap)
-warranty, though this is usually 1-2yr
-what video cards or sound cards it comes with
-perks(built in webcam, pretty lights, free mouse or carry bag, whether it transforms into a robot etc)
-oh and if the user is actually gonna carry it around very often, dimensions and weight (and a carry bag).
It never hurts to read an online review or forum discussion of anything electronic you're planning to buy. You can usually learn quite a bit about what defects that model may have and whether or not others were happy with their purchase.