Question:- One system has following specifications

Intel Xeon 7.6 GHz
Ram = 2GB
Cache = 2 MB
No of users = 500
Network switches = 1 Giga
Operating system = Linux

Other system has

Intel Xeon 7.6 GHz
Ram = 2GB
Cache = 2 MB
No of users = 500
Network switches = 1 Giga
operating system = windows 2003

How much time this processor will take to process the request of single user?
Whats the formula for computing