Coolermaster M2 1500W 80Plus Silver Modular Power Supply

Specifications

Lets discuss some of these numbers before we move forward and show where Coolermaster is heading with this.  The 1500w M2 has a “typical” efficiency rating of 88% which is where we get our Silver rating from.  Looking at the table and graph below we see that the silver is *almost* the dead center of the pack in terms off efficiency.  Looking at the graph from Coolermaster we see that in order to achieve this peak efficiency we’re limited to ~50% load (750 watts).  To average 88% we have a wide range from 20% to ~75% load.

With this in mind, lets get a definitive answer to the first question we posed in our introduction: What is the difference between an un-rated and a rated power supply?  An unrated power supply has an efficiency rating below 84% therefore it’s using more energy than it needs adding to your power bill.  This also means more heat from being inefficient.  So the difference? Money and Heat.

Another thing to notice about the 1500w M2 from Coolermaster is the abundance of ports that is offered.  This PSU is capable of powering 2 CPUs (such as the EVGA SR motherboard series) and 6 PCI-E cards.  12 SATA ports means this PSU is ready for any RAID setup you can throw at it, Molex ports for externals/fans, and a Floppy power port for giggles.  To top all of this efficiency and flexibility off Coolermaster is using a 135mm Hydro-bearing fan to cool it all.  Whats so great about Hydro-bearing fans? They’re extremely quiet.  So on paper this PSU is powerful, flexible, and quiet.  Sure does get me excited thinking about that combination.

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