Processor speed - as with almost all of the system info - can be determined using WMI.


oWMILocator = createobject("WbemScripting.SWbemLocator")
oWMI = oWMILocator.ConnectServer(".", "root\cimv2")
oProcessors = oWMI.InstancesOf("WIN32_Processor")
for each oProcessor in oProcessors
? "Processor speed: ", oProcessor.MaxClockSpeed
next