Using an extra GPU for Hackintosh

I have a 980 that I was considering throwing in the build since hackintosh doesnt support the 2070 but got a couple questions

1) Does Mojave support a 980 or is the latest just High Sierr

2) Is there a HDMI splitter that splits at the gpu level rather than at the TV? Is that even possible?

3) What would I need to do in an ASUS Bios to make the OS' select the right GPU? Windows > 2070, Hackintosh > 980

submitted by /u/ItsKingKumar
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