As I know... in the beginning WoW was making Problems with onboard gfx chips, but it was in the very beginning, think this was fixed within the last years. (something like "you need a gfx Card to play this"-kinda pop ups, wow just hasn't found it)

http://forums.worldofwarcraft.com/th...34095176&sid=1

here is someone writing in the last post that it can run wow with 70 fps, don't know if it's true, but if the NB has enough RAM i see there no Problem.(onboards are using RAM for gfx don't they?)