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    5i5RYH at 3840x2160 only allows 30Hz refresh rate on mini displayport output

    UncleGus

      I am running 64-bit Windows 10 and I have installed version 15.40.22.4424 of the drivers, which is the latest driver version. I have a mini DP 1.2 to HDMI 2.0 adapter plugged in to the mini displayport output, and from there an HDMI to HDMI cable plugged in to an LG HD 4k TV. In the graphics properties panel of the Intel graphics settings, when I select 3840x2160, I can only choose refresh rates up to 30Hz. The technical specification of the 5i5RYH on page 22 says:

       

      1.5.1.4 Mini DisplayPort* DisplayPort is a digital communication... The maximum supported resolution is 3840 x 2160 @ 60 Hz, 30bpp. The Mini DisplayPort is compliant with the DisplayPort 1.2 specification. DisplayPort output...

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