Anyone have recent information on power consumption of 4 and/or 8 port SATA / SAS controllers?  I'm trying to find something with very low idle power consumption, but having difficulty finding accurate, up-to-date data for various controllers.   According to this (old) chart, some SAS2008 based controllers consume ~6.5w idle.   Is this as good as it gets for Unraid compatible controllers, or are there better options out there?