That's the beauty of "green" reductions, it's nearly impossible to prove or disprove - there are knock on effects all the way down the line.

For example, have we considered:

* Running these machines into the ground as opposed to dumping them before their end of life? There are "green" implications for the recycling effort, the delivery and manufacture of new machines/components

* Going forward, less machines to be decommissioned/upgraded

* Uber machines will need to be upgraded more frequently as they'll have less room for exansion

* Running a machine at 80% load continuously will reduce the MTBF figures

I'm sure anyone could come up with a convincing argument either way. Brings me back to my first point, that's the beauty of "green" compliance.