Many use notebooks then the laptop for their needs, many of the may come across this situation when you loads a video in facebook or in youtube the video streaming loads the cpu usage to 100% and you can't find the reason for this ? Here the few reasons we find for it,

Intel Atom cpu is a small low powered cpu designed to use in small device which has the ability to process only fewer application at a time. To reduce the size of the cpu its performance is reduced. Your notebooks wont have any dedicated graphics to handle the graphic needs to stream the video. So it makes your notebooks cpu to process all its needs and it makes cpu usage to 100%.

Hope this information might be use for you, Happy Computing !