PowerColor HD5850 DVI resolution problems


I've got a PowerColor PCS+ HD5850 1GB GDDR5 card.
The manufacturer's spec page says it's has two Dual Link DVI-I ports each capable of 2560x1600 resolution. I have been using a Dell U2713 monitor at 2560x1440 resolutions with no problems.
However, I have just purchased a second U2713 monitor and it's resolution is stuck at 1920x1080.

I have tried all possible monitor/port/cable combination and the problem is clearly with the second DVI port. One port outputs the stated 2560 resolution, while the other is stuck at 1920. :(

My goal is to have both monitors running at 2560x1440.

1) Is it possible that the manufacturer lied and that one of the DVI ports is not dual link?
2) Is there a known workaround?

3) The card also has 2 mini DisplayPorts capable (according to manufacturer) of displaying 2560x1600. Is it worth investing in a DisplayPort->DVI-i adaptor (that costs as much as the video card)?
4) Or is it better to simply add a second (CrossFire) 5850 card?

Thank you!!! :)
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  1. Best answer
    Not sure which monitor you have specifically as there is no straight up Dell U2713 that I can find ... however, every sub type of that model indicated that the monitor had a displayport port ... so you should be able to just hook up directly from GPU displayport to monitor displayport without the need for an adapter.

    If you don't have a DP port on your monitor, I need a link for the specific model.
  2. Spaniard United, I've got a Dell UltraSharp U2713HM.

    Yes, you are absolutely right! I have just checked and there is a DisplayPort at the rear of both of my monitors! This possibility didn't even cross my mind! :)

    But I'm still wondering... You think PowerColor lied?
  3. It's possible but unlikely. It is an odd problem though. You could try getting in touch with their support and see what they say but it's always a toss up with support. It definitely says they should both be Dual Link so best case your hardware isn't functioning correctly and worst case they misrepresented their product.
  4. Spaniard United, thank you for your answer - I've just plugged in my monitor with the DisplayPort cable and it's working at maximum resolution and refresh rate like a charm!
    Thanks to you, I've saved at least $80 and the possible troubles using an adaptor!

    As for the PowerColor PCS+ HD5850 1GB GDDR5 video card, I've tried all possible combinations of both DVI ports with both monitors and both cables and the result is always the same - one port always is stuck at the 1920 resolutions. So it's definitely the card...
    I'm writing this down in case anyone will ever be in the same situation and will read this thread.
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