Question about Crossfire...

Crockturtle566

Honorable
Nov 5, 2013
11
0
10,510
I'm buying a computer soon and plan on getting a 7870. But a then a month later I plan on getting a second card for crossfire. Lets say I get a 7950 instead of a other 7870 for the more memory. I take the original 7870 out of the first slot then put the 7950 there, then the 7870 in the second slot. Would it use the 7950 3gb of vram or would it be limited by the 2gb of vram on the 7870?

This is the best I could explain my question.