If cost is not an issue, how to mining is best way?
That really suggests you are stealing electricity of your employer.
Not necessery, there is a possability, that we meet another botnet developer.
I actually hope so.
Otherwise, this in the kind of idiocy that gives sysadmins a bad name.
No stealing, the computer is for gamehouse, just try to use the idle wasting computing resources.
Today computers when idling use less power, if you use the "idle time" you will ramp up (a lot) the power use.
10.000 computers using about 5 hours of total GPU time daily, are likely to use 25 Mwatts daily. (and turn a good part of that into heat too, rising cooling costs of the facilities where they are located)