Going Crossfire soon, general question.

subduck9

Honorable
Aug 16, 2012
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10,640
Anything stopping me from getting another 7870?

Z68 Ext3 Gen3
i5 2500k
8gb 1600 RAM
750w 80+ gold psu
and a 7870

Just want to know if there might be a problem with my mobo since its a bit older.