Found this post on the Intel Server Room - really highlights the green aspects available on the Nehalem platform...really great stuff:
Germany, France, or the UK: Who Wins for Server ROI?
Most of the time, server ROI is measured on the data center scale, replacing tens, hundreds, or even thousands of servers with fewer higher-performing and more energy efficient servers.
But...have you ever wondered how much power you could save if you replaced every 4 year old server in an entire country with Xeon 5500 Nehalem-based systems? What about how much CO2 that could be removed for those same 4-year old servers – and number of cars it effectively removes from the road?
Well, wonder no more! Check out this short paper for an eye-opening comparison of the UK, Germany, and France, and how big of an ROI they can realize if the entire country refreshed ALL of their 4-year-old servers. It looks at power savings, land reclamation, and monetary savings in slightly different terms, like how much space can be saved in comparison to the floor area of Notre Dame Cathedral? You’ll need to read on to find out more… J
Additionally, all calculations were done using the Xeon ROI tool, so check it out and come up with some more interesting comparisons based on your city, state, or country data. Be sure to post them here!