I was anxious to see what real memory usage would look like on my low end netbook.  It was better than Windows 7!  Less than 500M.  One problem I had was the native resolution of my netbook is1024X600 and the will not load Windows Store applications at that resolution.  I found a registry setting however to get higher non-native resolutions: "Display1_DownScalingSupported".  As with any registry change make sure you back up the registry first before making changes.  I searched the registry and changed the value from 0 to 1 where I found it and restarted.  Now I can get 1024X768 and 1152X864.

Let me know if this helped you!