macOS modifies my BIOS voltages on Sierra 10.12.2

Aug 28, 2013
Classic Mac
Mobile Phone
Hi everyone!

It's my first working hackintosh attempt. :)
The only issue I have is when I boot to Sierra, and reboot my PC, the RAM voltage goes insane. (DDR3 2.5V) o_O and resets 2 other voltages to Auto (My OC doesn't work with)

MB: Gigabyte X58A-UD7 1.0 F8
CPU: Intel Xeon X5650 @4GHz
GPU: GTX 970
Other stuff are irrelevant I think. :)

I used Clover r3974 with the given DSDT from here:
I followed this guide:

So the question is: Is there a way to stop macOS modifying my BIOS settings?

Thanks in advance! :)

Update 1: When I use the default DSDT extracted by Clover, the RAM and QPI voltage sets to auto upon reboot, but I'd like it unchanged. Can someone explain why patching DSDT necessary?

Update 2: Self patched DSDT seems to work correctly. :)
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