well as we talk about hardware... we forgettting the most important deal... the softwares....
u should allways think of getting Original Windows and one paid AVS.. as i found with my self, the time i used to spend with formatting the system now and then because of lack of good AVS cost me more than Rs. 1250 is what is the price of one KAV...
also Original Windows ensures uptodate system which really helps to keep the system running and healthy... we have more system so we went for volume licencing for Windows and Office...
secondlly now days at the time of Reliance and Sify here and there.. u neeed to be cool enough to draw customer to ur cafe... u just cant seat with a pen and papero to write down the time... lol...
consider buying a cafe management software...
Now there are many of them... some even doesnt use Explorer rather they come with their OWN GUI system... but I foound one indian Cafe Management software.. is good enough for my 50 system cafe.... that's Called
CafeZee.. very good and flexible... allows u to compete with Sify and Reliance... comes with Good security features also... like blocking drives and looking softwares or Menus or Options... also one click to apply or remove them to maintanence...