How do I know what "system" my Mac OSX will be installed on of the options: Dual CPU, HAswell, Legacy, LGA 1151, x79, and x99

This is apparently a very important question in the guide I'm using: http://www.rampagedev.com/guides/clover-bootloader/

But I have no clue what any of these mean, the guide doesn't explain at all, and I'm not finding any results on google. I'm trying to hackintosh an Acer Aspire V5-471. How do I figure out which one to choose?