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O/C blue screen

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New Member
May 14, 2016
Hey guys
I have two 6XXX series gpu ,HD 6850 cyclone crossfirex , hd 6850 sapphire
and I can't overclock I get a blue screen every time i benchmark test haven
they both running at 850/1100 msi and gpuz confirm this any tips

- - - Updated - - -

just noticed my sapphire gpu is at 0 volt but i got the sync. setting on as well dont know i that will help like at all :sly:

caddi daddi

Godzilla to ant hills
Jan 10, 2012
have you run both of these cards as singles? and know for a fact that they both work?