newbie question on sli/crossfire

alonmach

Honorable
Dec 23, 2013
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what do i need to check for on a new mobo to know it supports sli/crossfire?

also what are the requirements on the gpu side to work with another?

i plan on getting an r9 290/290x with an additional one in the future

i plan on getting i7 4770k but on all the z87/z97 i checked, saw only sli support, no corssfire? am i missing something?

thanks