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r9 380

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    r9 380 dual monitors problem

    Hello to all! I have a mac pro 5.1 working beautifully with an nvidia gtx970, driving two monitors without a hitch (one is a 4k 32" and the other is a 27" 1080p, both 60hz). In the last days I decided to add an amd r9 380 I had lying around with the premise that it would drive my monitors...