Z97 HDMI 1.4 to DP 1.2 Adapter for 2560x1440? Will it work?

Discussion in 'Displays' started by af22, Dec 18, 2014.

  1. af22

    af22 Gawd

    Messages:
    610
    Joined:
    Jun 21, 2010
    In my haste of building my parents a new PC. I built a simple Haswell i5 using the Z97 chipset, and now after setting it up there is no way to drive their Dell U2713HM @ 2560x1440:

    The Z97 motherboard has:
    1 x DVI-D port, supporting a maximum resolution of 1920x1200@60Hz
    1 x HDMI port, supporting a maximum resolution of 4096x2160@24Hz or 2560x1600@60Hz
    * Support for HDMI 1.4a version.

    The Dell U27HM13 has:
    1 Dual Link Digital Visual Interface connectors (DVI-D) with HDCP
    1 DisplayPort 1.2 (DP)
    1 High Definition Multimedia Interface (HDMI)
    Our HDMI is 1.4 is compatible and can support up to 1920 x 1080.


    So the HDMI on the Dell does not handle 2560x1440. They make DP to HDMI adapters for $30. Does anyone know if I can use a DP to HDMI adapter backwards, so that it's HDMI to DP? Does direction matter on these adapters?

    http://www.amazon.com/Accell-B086B-...1418921371&sr=8-4&keywords=hdmi+1.4+to+dp+1.2

    The descriptions are all "Easily Connects Your DisplayPort PC to an HDMI Enabled HDTV, Monitor or Projector". However I need to use it the other direction. To connect HDMI from my PC to DP on my Monitor.

    If anyone has any experience in this matter it would be great.
     
  2. af22

    af22 Gawd

    Messages:
    610
    Joined:
    Jun 21, 2010
    If the adapter does work, for $30 + $10 for an HDMI cable. Would it be better just to buy a ~ $50-$100 video card and not use the integrated intel graphics?
     
  3. kevinsbane

    kevinsbane Limp Gawd

    Messages:
    269
    Joined:
    Apr 25, 2011
    DP->HDMI adapters are uni-directional, you can't convert an HDMI to a DP signal with that particular adapter.

    You need something like this: http://ca.startech.com/ppc?product_...CNo7Rs6fVZhBnIP9lRqH2lrEizwNYHjPriBoCPlHw_wcB but it isn't even compatible with your full resolution.

    Get a video card with DisplayPort or DL-DVI.
     
  4. cbf123

    cbf123 n00b

    Messages:
    50
    Joined:
    Dec 12, 2013
    Almost certainly you can't use the DisplayPort-to-HDMI adapter backwards. There exist HDMI-to-DP adapters, but the ones I've seen are active and they're expensive.

    I think your best bet would be a new motherboard with one or more DisplayPort outputs. (Assuming you can return the old motherboard. If not, then a cheap video card with DisplayPort or Dual Link DVI outputs--but that'll draw more power than the integrated graphics.)
     
  5. af22

    af22 Gawd

    Messages:
    610
    Joined:
    Jun 21, 2010
    Thanks for the response. I'm still shocked Dell would provide HDMI that only does 1080p on a 2560x1440 monitor. Looks like i'll either swap out the motherboard, or put in a < $100 graphics card.
     
  6. Zepher

    Zepher [H]ipster Replacement

    Messages:
    16,892
    Joined:
    Sep 29, 2001
    That is kinda strange for the Dell. Have you tried a different HDMI cable?
    I have an older AMD HD6950 and bought a 25" 2560x1080 monitor and it worked with the monitor supplied HDMI cable.

    Oh, I just found the specs for the monitor. you have the model number transposed so I couldn't find it right away.
    that is odd that it's only 1920x1080 on that screen.
    27" DellTM UltraSharp U2713HM
     
  7. Armenius

    Armenius I Drive Myself to the [H]ospital

    Messages:
    18,617
    Joined:
    Jan 28, 2014
    If the DVI-D on both the motherboard and monitor are dual-link, you can do 2560x1440 @ 60 Hz over DVI. Just make sure to use a DL-DVI cable, as well.
     
  8. af22

    af22 Gawd

    Messages:
    610
    Joined:
    Jun 21, 2010
    There are a lot of laptop users trying to push HDMI out to the U2713HM at 2560x1440 using registry hacks and setting custom timings. It appears there is no problems if you hack it at 55hz. I've seen other posts about going from HDMI to DVI and creating custom timings. I'm not interested in these hacks for my parents as i don't want to get a phone call from them about why it stopped working.