the first benchmark shows that write caching is not enabled look at the 4k write compared to the second bench. I'm not sure if the iastorF affects anything but it has been my experience that it does not. Uninstall 12.7 and install 11.2 https://downloadcenter.intel.com/Det...?DwnldID=21408

use the exe so you have the rst control panel

look at the system report in rst control panel.