4GB ram, if there's no paid option to go to 8GB or its not upgradeable (which its probably not), this isn't worth it.
Boggles my mind how many of the ultra thin ultrabooks and hybrid / PRO machines are fixed at 4GB with no option for 8GB. Luckily some manufacturers like Lenovo and 1 or 2 others have announced 8GB models to be released in the next 3-6 months. Completely holding off on a new machine for the wife until an 8GB, ultra thin and lightweight, good resolution machine with the ability to replace the SSD is available.