Energy-efficient and quiet. Asus has with the F550CA-XX078D the appropriate offer for those who cannot or simply don't want to spend a lot on a notebook, . For almost 320 euros the buyer gets a 15.6-inch notebook with ULV processor and 500 GB hard-drive. A Windows operating system is included in the scope of delivery. Our review reveals if Asus has a convincing offer on its hands.