eBox is based on Ubuntu Server with 2.6 kernel, whereas the SBS is a MS prod uct having base as Windows Server 2008 Standard. The difference between the two is that eBox has a striped down version of Ubuntu server, hence you will not get any visual interface on the host machine. So for accessing the GUI (for management), you require a second machine which should be able to connect to eBox. In case of SBS 2008, you will get a complete GUI on the host machine itself.

SBS 2008 requires atleast 2 GHz processor in case its single core processor whereas 1.5 G Hz or higher for multi-core, atleast 4 GB RAM, 60 GB HDD and fax channel. The clients supported by SBS are: Microsoft WindoW Xp professionai Edition SP2 or later, Windows Vista Business, Enterprise. and Ultimate, Windows Mobile 5.0 or later. There is no f specified hardware requirement for' eBox, and so it depends upon the number of users you will be handling. There is no restriction to what client as you use with eBox, but this is for sure that what SBS can do with its clients, eBox does only some part of it.