Originally Posted by akromatic
do run some monitoring program or cpuz in windows or what not to see if it would automatically clock down to 1.6ghz and 0.9v. sometimes its the OS not having the correct power saving state to instruct the CPU to clock down when not needed
Originally Posted by ravennevar
I will install Windows 7 and see what kind of power consumption I get and if the APU clocks down. One thing I have noticed so far is that the system uses less power when in OpenELEC vs. UEFI. In addition, when playing a movie in OpenELEC power consumption drops even more to ~45w (I saw it hit the upper 30s a few times). Also, I am replacing the PSU as the one they shipped was dented (someone dropped it) and it does make strange noises.
Just wanted to follow up regarding my testing. It's going slow as I've been busy and it does not look encouraging. So far I have tested various NAS software as well as Win7, Win8, and Windows Storage Server 2012. This consisted of the system with just the main HDD running. I'm just trying to get a feel of what a baseline power consumption would be. With Win7 the system was idling at ~34w. Win8 further reduced that to ~27w and Storage Server managed to get it to ~26. Now, it's a different story with the open source NAS software. OpenMediaVault and NAS4Free idled at ~45, while FreeNAS idled ~73w.
As you can see there is a huge difference in power consumption between platforms, with Win pretty much taking advantage of all the power saving features of the A85X chipset. When trying to enable power management features in NAS4Free and FreeNAS, the system was not able to set the desired CPU state. I still need to run some tests switching some things around in the BIOS (underclocking, etc) to see if this helps with the NAS software, which I would prefer over the Windows Storage Server offering mainly because of the lack platform of drivers for the latter.
Also, voltage and frequency in all 3 Win setups never went below 1.072v and 1400MHz respectively.
Will keep you guys posted.Edited by ravennevar - 2/21/13 at 9:53pm