APPX Software does not certify any configuration. There are too many variables that can affect performance that we have no control over. For example, information relating to the type of APPX applications or the perfomance characteristics of the APPX applications that will be run on the system. We also do not know which applications other than APPX might also be installed on the same machine. Response time is also very subjective. A response time of one second may be very acceptable to one user but not to another. We also have no information regarding how much disk space is needed by the APPX applications or any other applications that might be installed on the machine.