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saphire 6870 crossfire not working

Last response: in Graphics & Displays
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July 19, 2014 9:38:29 PM

sorry for my bad english

pc specs

amd 4100 fx
motherboard 970A-G46
http://www.msi.com/product/mb/970AG46.html#hero-overvie...

8 gb memory

500 gb hdd

2x crossfire mode
SAPPHIRE HD 6870 1GB GDDR5 PCIE
(the one without pcie only has one dvi port )

http://www.sapphiretech.com/presentation/product/?cid=1...


i am not very techy , i am trying to make both the sapphire 6870 graphic card work TOGETHER crossfire however no luck , but if i run windows in safe mode it works fine with default windows driver 600x800 resolution

i think i am not able to find the right drivers, i tried windows 8.1 and windows 7
i have tried the driver from the sapphire website 12.c version and i have also tried windows automatic update driver but both end up with black screen and then i ahrd reset restore to earlier point

everytime i try to install the saphite 6870 pcie video driver screen goes black and that sit

gpu ports for soem reason one of the graphic card dvi port is black other one white
but sku # is same so i guess it doesnt matter

http://i57.tinypic.com/104faj4.jpg gpu back
http://tinypic.com/r/11ad3r6/8 both gpu
http://i59.tinypic.com/50r2hi.jpg my pc


PLEASE HELP!!!!!

Best solution

a b U Graphics card
July 19, 2014 10:08:55 PM

You need to connect the 2 cards using the crossfire connector, you also need to make sure both your cards are crossfire capable, sapphire makes crossfire and non-crossfire models of the same card. You also need to activate crossfire in your catalyst control center.
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July 19, 2014 11:24:38 PM

Yes I have the crossfire cable sorry for not mentioning
Both GPU are crossfire ready

And I can't unable crossfire the screen turns black when I install the driver
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a b U Graphics card
July 19, 2014 11:33:43 PM

Screen flickering when installing driver is to expected. What you can do is install the drivers and use the driver cleaner. You can also make sure both gpu's are working by putting in one at a time. Resetting BIOS to their default settings can also be helpful. if you are crossfiring after a long time, dust can pile up in the second PCI slot, messing up the connection.
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July 20, 2014 9:50:09 AM

BigBadBeef said:
Screen flickering when installing driver is to expected. What you can do is install the drivers and use the driver cleaner. You can also make sure both gpu's are working by putting in one at a time. Resetting BIOS to their default settings can also be helpful. if you are crossfiring after a long time, dust can pile up in the second PCI slot, messing up the connection.



What I know of for sure it something to do with drivers both work together with crossfire works fine in safe mode, it just I can't find the right driver for some reason
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a b U Graphics card
July 20, 2014 10:37:51 AM

Have you tried catalyst beta version?
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July 20, 2014 10:39:51 AM

BigBadBeef said:
Have you tried catalyst beta version?


Yea that's the once I used 12.c beta version
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a b U Graphics card
July 20, 2014 12:48:06 PM

Did you know 14.7 beta is out?
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!