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Questions about Crossfire Radeon 7950's on a Rampage III Formula Mobo

Jake_911
Level 7
I just picked up an X58 Rampage III Formula board and another 7950 so I can run crossfire. I read in an article on this website (link: http://rog.asus.com/15512011/rampage-iii-motherboards/rampage-iii-formula-extensive-overview/) that Slot 1 and Slot 3 will run 16x/16x......I am currently only able to get 16x/8x using slot 1 and slot 3.

Can anyone help me out as to why??

Thanks!
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3 REPLIES 3

SUKARA
Level 10
PCIE spec:3 x PCIe 2.0 x16 (dual x16 or x16, x8, x8)
so, if you want to used SLI or Crossfire feature,i suggest installed the graphic card on slot1 and slot3
You can reference user manual page 2-29 for detail..

user manual downlink:
http://support.asus.com/Download.aspx?SLanguage=zh-tw&p=1&s=29&m=Rampage%20III%20Formula&os=17&ft=12...

Area_66
Level 11
do you have something else connected in slot 2 ?

Area 66 wrote:
do you have something else connected in slot 2 ?


No I do not, the 2nd slot is empty.