Does enabling crossfire speed up GPU rendering with cycles?

Question

As the title says, does it help or not to enable crossfire?

very very related: http://blender.stackexchange.com/questions/47904/should-i-run-sli-or-not — Jaroslav Jerryno Novotny, Jun 01 '16 at 09:56
I think Blender in general uses the resources better with independent graphics cards than with crossfire/SLI enabled — Duarte Farrajota Ramos, Jun 01 '16 at 12:34

score 1 · Accepted Answer · answered Jun 01 '16 at 08:59

I tried rendering the bmw with both crossfire enabled and disabled (2 of my 3 cards)

The setup is Radeon R9 280X Radeon R9 270 Radeon 7870

The following time (2.11) is with crossfire enabled between the two R9's

while 1.33 was the time with crossfire disabled

1 Answers1