Well within 2% seems good to me. Now these are idle numbers, but as I figured above, 8 volts would give a non functional system.
You can grab the monitoring software from the MSI website if you want to see the actual numbers in Windows and while playing games.
Again, I think you may be loosing some performance with dual screens(or at least it looks that way with the report you posted above), try with a single screen or at least with games in fullscreen mode(not fake fullscreen or boarderless window ect.)
EDIt.
Yeah bios screen shots need a fat32 formatted flash drive(I am sure a hard drive would work, but Windows uses NTFS so that is out). I have even seen some flash drives not work from time to time.