cross fire 3.0 and 2.0

carlossa

Honorable
Oct 18, 2013
2
0
10,510
hi

im looking to add a second 7870 to my desktop but I only have one 3.0 x16 slot on my mother board and a 2.0 x16 (x4) slot will i lose anything having crossfire on these two slots?. i don't really want to upgrade the board unless i have to. i understand that's its better to have two 3.0 slots but it work with out a noticeable difference? Thanks in advance :)

intel i5 3570k
asus p8 z77 v lx
7870 vtx ghz edition
 

carlossa

Honorable
Oct 18, 2013
2
0
10,510


thanks for the help mate may have stopd me buying a new board for now although I may now be moving back to amd cpu after reading about manle api so maybe asus saber board for me with two 3.0 pci 16x16 lanes