My Imac 27 as a pc display

I have an Imac 27 that I want to use as a external display through the mini displayport. My PC has a Sapphire 5750 video card with displayport. I have a displayport to mini displayport cable suggested by apple tech support, however it is not working any suggestions?

QA Apple 27-inch LED Cinema Display

QA Apple 27-inch LED Cinema Display

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1 Answer from the Community

  • Best Answer:

    I finally solved the problem. I first tried using the Atlona AT-HD400 with the 5750 video card would only work at 1280x720, I then tried the Atlona AT-HD620 Scaler, which worked but at 1980x1200 to fill the screen with poor quality graphics on the Imac 27. I finally bought a XFX6870 with mini displayport to mini display port cable and it is gorgeous picture works at max resolution perfectly.