I have the APC smart-UPS 1500. UPSs are tough, because they work, then they don't work. If you have 900s for each computer and a 1500 for the server, it is difficult to think I need to change all of them A computer can crash as well, but generally you either notice performance issues or your i1 should be an i9 and your 1 GB of RAM could be 32.
