Since the HD Graphics graphics card up to 1,695 MB takes away from the RAM (shared memory), you can consider whether the RAM is not doubled to 8 GB, especially if you want to run multitasking.
To expand the memory there is a large service flap on the underside of notebook.
The installation of Windows updates, however, has taken up some time (hours), then can be but work well with Windows as well with Linux, despite the not so fast hardware.
Those who do not just want to play with the latest video games, can the Lifebook A512 buy quiet, eg running Google Earth liquid even with DirectX. To surf the web, watch pictures and movies, and therefore completely sufficient for office applications.
The device has a very good price / performance ratio and the workmanship is also good, the dull design looks chic.
So I can recommend further clear the LifeBook A512.